CN109558628A - A kind of coordination optimizing method and system of real-time generation schedule - Google Patents

Abstract

The present invention provides a kind of coordination optimizing method of real-time generation schedule and systems, comprising: obtain level-2 area grid power vacancy, calculate level-2 area power grid can security invocation spare capacity；When the vacancy of level-2 area grid power be greater than level-2 area power grid can safety calling spare capacity when, by establishing the real-time generation optimization plan of level-2 area, adjust level-2 area grid dispatching management unit generation；If level-2 area grid dispatching management unit generation amount is not enough to make up level-2 area grid power vacancy, by establishing two stage optimization method, the real-time generation optimization plan of level-1 area power grid is established, level-1 area grid dispatching management unit generation is adjusted.State point saves integrated regulating object design after this method is suitable for extensive power missing, is quickly adjusted to electric network active jointly by scheduling at different levels, eliminates influence caused by high-power missing.

Description

A kind of coordination optimizing method and system of real-time generation schedule

Technical field

The present invention relates to power domains, and in particular to a kind of coordination optimizing method and system of real-time generation schedule.

Background technique

China's energy resources are abundant, but the true pole heterogeneous cloud of geographical distribution, and the distribution that " the more south in north less, Xi Duodong few " are presented is special Point, such as coal resources, the hydraulic power potentials energy in 70% or more China are distributed in northwestern, and China's Regional Economic Development Then just in contrast with the level of consumption, the contrary distribution situation of this energy resources and load center has established China's electric power money The basic configuration and development strategy in source " transferring electricity from the west to the east, north and south supply mutually, national network ", extra-high-voltage alternating current, extra-high voltage direct-current etc. are remote Distance, large capacity transmission of electricity is imperative.Especially extra-high voltage DC transmission system is because it is with the spies such as large capacity, controllable, flexible Point, in China, great Qu interconnection, nortel south is defeated and the remote, large capacity transmission of transferring electricity from the west to the east and in terms of obtain It is widely applied.

Currently, deepening continuously with the construction of extra-high voltage interconnected network, power grid scale is expanded rapidly, and electric network composition is increasingly multiple Miscellaneous, national network basically forms.Operation of power networks integrated degree greatly improves, from 500 kilovolts nearest " hand in hand " of interconnection electricity Net develops the integrated power system to connect with extra-high voltage main grid structure, and alternating-current electric connection is close, alternating current-direct current exchange capacity is huge, respectively Power grid influences each other grade, interacting further enhances, and power grid characteristic turns to aggregated model by compartment model.Power transfer capacity Rapid growth effectively dissolve for most optimum distribution of resources, new energy in a wide range of and provides solid reliable hardware guarantee, but together When be also that power network safety operation brings new challenge.In these challenges, extra-high voltage alternating current-direct current interconnection how is handled Extensive rate missing problem is exactly a urgent problem needed to be solved caused by the failure of road.

The urgent locking fault or extra-high voltage AC circuit failure of extra-high voltage DC transmission system will will lead to sending Generate power surplus and receiving-end system and generate biggish power missing, if send receiving end power grid only networked by extra high voltage line or Cause system sectionalizing after extra high voltage line failure, then a large amount of power missing will cause receiving-end system frequency fluctuation.Therefore, It should be for the development trend and current demand of extra-high voltage bulk power grid " AC-DC coupling send receiving end coupling, the superior and the subordinate's coupling ", research and development It mutually helps in a few days planning optimization adjustment technology in the region for coping with extensive power missing.

Summary of the invention

In order to solve the problems, such as the extensive missing caused by extra-high voltage alternating current-direct current interconnector failure in the prior art, this Invention provides the coordination optimizing method and system of a kind of real-time generation schedule.

Present invention provide the technical scheme that

A kind of coordination optimizing method of real-time generation schedule, comprising:

Obtain level-2 area grid power vacancy, calculate level-2 area power grid can security invocation spare capacity；

When the vacancy of level-2 area grid power be greater than level-2 area power grid can safety calling spare capacity when, pass through The real-time generation optimization plan of level-2 area is established, level-2 area grid dispatching management unit generation is adjusted；

If level-2 area grid dispatching management unit generation amount is not enough to make up level-2 area grid power vacancy, pass through Two stage optimization method is established, the real-time generation optimization plan of level-1 area power grid is established, adjusts level-1 area grid dispatching management Unit generation.

Preferably, the level-2 area power grid can security invocation spare capacity calculation formula, it is as follows:

Wherein: S_ResFor the level-2 area power grid can security invocation spare capacity, S_mFor level-2 area dispatching of power netwoks pipe Manage unit can security invocation spare capacity, S_nFor level-1 area grid dispatching management unit can security invocation spare capacity； S_AGCmFor level-2 area grid dispatching management unit AGC unit can security invocation spare capacity, S_AGCnFor level-1 area power grid tune Degree management unit AGC unit can security invocation spare capacity；k_mFor the standby of level-2 area grid dispatching management unit AGC unit With safe proportionality coefficient；k_nFor the back-up safety proportionality coefficient of level-1 area grid dispatching management unit AGC unit；C_AGCmIt is two The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCmFor the spare capacity of non-AGC unit；C_AGCnIt is one The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCnFor the non-of level-1 area grid dispatching management unit The spare capacity of AGC unit.

Preferably, the foundation of the real-time generation optimization plan of the level-2 area, comprising:

Based on the constraint of broad sense tie line plan, unit output constraint, unit ramp loss and line power constraint, with power generation The minimum adjusting target of expense, by the broad sense interconnection meter for adjusting each level-2 area grid dispatching management unit in level-1 area Slack variable is drawn, the real-time generation optimization plan of level-2 area is established.

Preferably, the adjusting target is calculated as follows, comprising:

The objective function of implementation generation optimization model between the level-2 area power grid is calculated as follows:

In formula: F_pFor the power generation expense of fired power generating unit in level-2 area power grid；F₀For fired power generating unit in level-1 area power grid Power generation expense；ΔP_m,tTo save the broad sense tie line plan slack variable that timing carves t；For unit relaxation punishment cost；f (P_mi,t) be level-2 area power grid in fired power generating unit m the t period power generation expense；N_mFor equivalent fire total in level-2 area power grid Motor group number；T is scheduling slot number；

The constraint condition of real-time generation optimization model between level-2 area power grid includes: the constraint of broad sense tie line plan, machine Group units limits, unit ramp loss and line power constraint.

Preferably, the broad sense tie line plan constraint are as follows:

Wherein,To save m moment t ultra-short term power；To pass through level-1 area when high-power missing The power of interconnection input level-2 area power grid m between power grid；The pre- measurement of power of m moment t new energy ultra-short term power output is adjusted to save Rate；The fired power generating unit of m moment t is adjusted to plan general power of contributing in real time to save；To save the Hydropower Unit for adjusting m moment t Plan power output general power in real time；ΔP_m,tFor province m moment t load deviation；G_m,tFor the gross capability of province m moment t；P_m,max For the maximum output power of provincial dispatching unit；P_n,maxPay for the maximum output power of management unit n first for level-1 area power grid.

Preferably, the unit output constraint are as follows:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

Wherein, P_Ti,maxGo out activity of force for equivalent fired power generating unit maximum technology；P_Ti,tFor thermoelectricity moment t gross capability function Rate；P_Hi,maxGo out activity of force for equivalent Hydropower Unit maximum technology；P_Hi,tFor water power electricity moment t gross capability power；P_Ni,max Go out activity of force for equivalent new energy unit maximum technology；P_Ni,tFor equivalent new energy moment t gross capability power；P_Ti,minFor Equivalent fired power generating unit minimum technology goes out activity of force, P_Hi,minGo out activity of force, P for equivalent water power minimum technology_Ni,minFor equivalent new energy Source unit minimum technology goes out activity of force.

Preferably, the unit ramp loss are as follows:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the fired power generating unit i unit time Climb power (MW/h)；Go out activity of force in t moment for fired power generating unit i；For fired power generating unit i going out in moment t-1 Activity of force.

Preferably, the line power constraint are as follows:

In formula:For the lower limit of the power of i-th interconnection transmission capacity；I-th interconnection transmission capacity The upper limit of the power；For the transimission power of route i moment t, when calculating, level-1 area grid dispatching management unit generation power is taken Plan generated output a few days ago.

Preferably, the foundation of the real-time generation optimization plan of the level-1 area power grid grade, comprising:

Based on the constraint of broad sense tie line plan, unit output constraint, unit ramp loss and line power constraint, with power generation The minimum adjusting target of expense, by the broad sense interconnection meter for adjusting each level-1 area grid dispatching management unit in level-1 area Slack variable is drawn, the real-time generation optimization plan of level-1 area power grid grade is established

Preferably, the adjusting target is calculated as follows:

In formula, Δ P_n,tFor the broad sense tie line plan slack variable of moment t in level-1 area grid dispatching management unit n； F_RFor the power generation expense of fired power generating unit in level-1 area power grid grade power grid；F₀For the power generation expense of fired power generating unit in level-1 area power grid With；For unit relaxation punishment cost；f(P_ni,t) be level-1 area power grid grade power grid in fired power generating unit n the t period power generation Expense；N_nFor equivalent fired power generating unit number total in level-1 area power grid grade power grid；

The constraint condition of broad sense tie line plan in level-1 area power grid includes: the constraint of broad sense tie line plan, unit Units limits, unit ramp loss, line power constraint.

Preferably, the broad sense tie line plan constraint, comprising:

In formula:Plan total work of contributing in real time for the fired power generating unit of level-1 area grid dispatching management unit n moment t Rate；Plan general power of contributing in real time for the Hydropower Unit of level-1 area grid dispatching management unit n moment t；It is one The new energy unit of grade regional power grid management and running unit n moment t plans general power of contributing in real time；It is ultrashort to save m moment t Phase load prediction power；The function of level-2 area power grid m is inputted when for high-power missing by interconnection between level-1 area power grid Rate；M moment t new energy ultra-short term power output prediction power, Δ P are adjusted to save_m,tFor province m moment t load deviation；G_m,t For province m moment t gross capability.

Preferably, the unit output constraint, comprising:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

In formula: P_Ti,maxGo out activity of force for fired power generating unit maximum technology；P_Hi,maxGo out activity of force for Hydropower Unit maximum technology； P_Ni,maxGo out activity of force for new energy unit maximum technology；P_Ti,minGo out activity of force for fired power generating unit minimum technology；P_Hi,minFor water power Unit minimum technology goes out activity of force；P_Ni,minGo out activity of force for new energy unit minimum technology.

Preferably, the unit ramp loss, comprising:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the fired power generating unit i unit time Climb power (MW/h).

Preferably, the line power constraint, comprising:

In formula:For the lower limit of the power of i-th interconnection transmission capacity；For i-th interconnection transmission capacity The upper limit of the power；For the transimission power of route i moment t, when calculating, level-2 area grid dispatching management unit generation power Using real-time plan generated output.

A kind of coordination optimization system of real-time generation schedule, comprising:

Spare capacity obtains module: obtaining level-2 area grid power vacancy, calculating level-2 area power grid can security invocation Spare capacity；

Second level real-time generation schedule module: when level-2 area grid power vacancy be greater than level-2 area power grid can safety When the spare capacity of calling, by establishing the real-time generation optimization plan of level-2 area, level-2 area grid dispatching management machine is adjusted Group power generation；

Level-one real-time generation schedule module: if level-2 area grid dispatching management unit generation amount is not enough to make up second level area Domain grid power vacancy is established the real-time generation optimization plan of level-1 area power grid, is adjusted then by establishing two stage optimization method Level-1 area grid dispatching management unit generation.

Preferably, the spare capacity obtain module be calculate by the following formula level-2 area power grid can security invocation spare appearance Amount:

Wherein: S_ResFor the level-2 area power grid can security invocation spare capacity, S_mFor level-2 area dispatching of power netwoks pipe Manage unit can security invocation spare capacity, S_nFor level-1 area grid dispatching management unit can security invocation spare capacity； S_AGCmFor level-2 area grid dispatching management unit AGC unit can security invocation spare capacity, S_AGCnFor level-1 area power grid tune Degree management unit AGC unit can security invocation spare capacity；k_mFor the standby of level-2 area grid dispatching management unit AGC unit With safe proportionality coefficient；k_nFor the back-up safety proportionality coefficient of level-1 area grid dispatching management unit AGC unit；C_AGCmIt is two The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCmFor the spare capacity of non-AGC unit；C_AGCnIt is one The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCnFor the non-of level-1 area grid dispatching management unit The spare capacity of AGC unit.

Preferably, the second level real-time generation schedule module, comprising:

Second level real-time generation schedule submodule: about based on the constraint of broad sense tie line plan, unit output constraint, unit climbing Beam and line power constraint, with the minimum adjusting target of the expense of generating electricity, by adjusting each level-2 area power grid tune in level-1 area The broad sense tie line plan slack variable of degree management unit, establishes the real-time generation optimization plan of level-2 area.

Compared with prior art, the invention has the benefit that a kind of coordination of real-time generation schedule provided by the invention Optimization method and system, comprising: step 1: obtain provincial power network power shortage, calculate provincial power network can security invocation it is spare Capacity；Step 2: when the vacancy of provincial power network power be greater than provincial power network can safety calling spare capacity when, pass through foundation Provincial real-time generation optimization plan adjusts provincial dispatching unit power generation；Step 3: if provincial dispatching unit generated energy is not enough to make up provincial electricity Net power shortage establishes the real-time generation optimization plan in region, adjusts grid dispatching unit hair then by establishing two stage optimization method Electricity makes up provincial power network power shortage.State point saves integrated regulating object design after this method is suitable for extensive power missing, Electric network active is quickly adjusted jointly by scheduling at different levels, eliminates influence caused by high-power missing.

Detailed description of the invention

Fig. 1 is the coordination optimizing method process of real-time generation schedule of the invention；

Fig. 2 is that state of the invention point saves three-level grid generation plan relation schematic diagram；

Fig. 3 is that state of the invention point saves real-time generation schedule coordination flow chart.

Specific embodiment

For a better understanding of the present invention, the contents of the present invention are done further with example with reference to the accompanying drawings of the specification Explanation.

Embodiment 1:

Fig. 1 is the coordination optimizing method flow chart of real-time generation schedule of the invention, as shown in Figure 1, provided by the invention A kind of coordination optimizing method of real-time generation schedule, comprising:

Obtain level-2 area grid power vacancy, calculate level-2 area power grid can security invocation spare capacity；

When the vacancy of level-2 area grid power be greater than level-2 area power grid can safety calling spare capacity when, pass through The real-time generation optimization plan of level-2 area is established, level-2 area grid dispatching management unit generation is adjusted；

If level-2 area grid dispatching management unit generation amount is not enough to make up level-2 area grid power vacancy, pass through Two stage optimization method is established, the real-time generation optimization plan of level-1 area power grid is established, adjusts level-1 area grid dispatching management Unit generation.

The level-2 area power grid can security invocation spare capacity calculation formula, it is as follows:

Wherein: S_ResFor the level-2 area power grid can security invocation spare capacity, S_mFor level-2 area dispatching of power netwoks pipe Manage unit can security invocation spare capacity, S_nFor level-1 area grid dispatching management unit can security invocation spare capacity； S_AGCmFor level-2 area grid dispatching management unit AGC unit can security invocation spare capacity, S_AGCnFor level-1 area power grid tune Degree management unit AGC unit can security invocation spare capacity；k_mFor the standby of level-2 area grid dispatching management unit AGC unit With safe proportionality coefficient；k_nFor the back-up safety proportionality coefficient of level-1 area grid dispatching management unit AGC unit；C_AGCmIt is two The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCmFor the spare capacity of non-AGC unit；C_AGCnIt is one The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCnFor the non-of level-1 area grid dispatching management unit The spare capacity of AGC unit.

The foundation of the real-time generation optimization plan of level-2 area, comprising:

Based on the constraint of broad sense tie line plan, unit output constraint, unit ramp loss and line power constraint, with power generation The minimum adjusting target of expense, by the broad sense interconnection meter for adjusting each level-2 area grid dispatching management unit in level-1 area Slack variable is drawn, the real-time generation optimization plan of level-2 area is established.

The adjusting target is calculated as follows, comprising:

The objective function of implementation generation optimization model between the level-2 area power grid is calculated as follows:

In formula: F_pFor the power generation expense of fired power generating unit in level-2 area power grid；F₀For fired power generating unit in level-1 area power grid Power generation expense；ΔP_m,tTo save the broad sense tie line plan slack variable for adjusting m moment t；For unit relaxation punishment cost；f (P_mi,t) be level-2 area power grid in fired power generating unit m the t period power generation expense；N_mFor equivalent fire total in level-2 area power grid Motor group number；T is scheduling slot number；

The constraint condition of real-time generation optimization model between level-2 area power grid includes: the constraint of broad sense tie line plan, machine Group units limits, unit ramp loss and line power constraint.

The broad sense tie line plan constraint are as follows:

Wherein,To save m moment t ultra-short term；To pass through level-1 area power grid when high-power missing Between interconnection input level-2 area power grid m power；The power output prediction of m moment t new energy ultra-short term is adjusted to save, The fired power generating unit of m moment t is adjusted to plan summation of contributing in real time to save, The Hydropower Unit of m moment t is adjusted to plan summation of contributing in real time to save,

ΔP_m,tFor province m moment t load deviation.G_m,tFor province m moment t gross capability；P_m,maxTo save tune machine The maximum output power of group；P_n,maxFor the maximum output power of level-1 area grid dispatching management unit n.

The unit output constraint are as follows:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

Wherein, P_Ti,maxFor equivalent fired power generating unit maximum technology power output；P_T,itFor thermoelectricity moment t gross capability；P_Hi,max For equivalent Hydropower Unit maximum technology power output；PH, it are gross capability of the water power electricity in moment t；P_Ni,maxFor equivalent new energy unit Maximum technology power output；PN, it are gross capability of the equivalent new energy in moment t；P_Ti,minGo out for equivalent fired power generating unit minimum technology Power, P_Hi,minFor equivalent water power minimum technology power output, P_Ni,minFor equivalent new energy unit minimum technology power output.

The unit ramp loss are as follows:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the fired power generating unit i unit time Climb power (MW/h).

The line power constraint are as follows:

In formula:For the lower limit of i-th interconnection transmission capacity；The upper limit of i-th interconnection transmission capacity；For the transimission power of route i moment t, when calculating, level-1 area grid dispatching management unit generation power takes plan hair a few days ago Electrical power.

The foundation of the real-time generation optimization plan of level-1 area power grid grade, comprising:

Based on the constraint of broad sense tie line plan, unit output constraint, unit ramp loss and line power constraint, with power generation The minimum adjusting target of expense, by the broad sense interconnection meter for adjusting each level-1 area grid dispatching management unit in level-1 area Slack variable is drawn, the real-time generation optimization plan of level-1 area power grid grade is established

The adjusting target is calculated as follows:

In formula, Δ P_n,tFor the broad sense tie line plan slack variable of moment t in level-1 area power grid；F_RFor level-1 area The power generation expense of fired power generating unit in power grid grade power grid；F₀For the power generation expense of fired power generating unit in level-1 area power grid；ΔP_n,tIt is one Broad sense tie line plan slack variable of the grade regional power grid management and running unit n in moment t；For unit relaxation punishment cost； f(P_ni,t) be level-1 area power grid grade power grid in fired power generating unit n the t period power generation expense；N_nFor level-1 area power grid grade power grid Interior total equivalent fired power generating unit number；

The constraint condition of broad sense tie line plan in level-1 area power grid includes: the constraint of broad sense tie line plan, unit Units limits, unit ramp loss, line power constraint.

The broad sense tie line plan constraint, comprising:

In formula:Plan summation of contributing in real time for the fired power generating unit of level-1 area grid dispatching management unit n moment t, Plan power output in real time always for the Hydropower Unit of level-1 area grid dispatching management unit n moment t With, New energy unit for level-1 area grid dispatching management unit n moment t is planned in real time Power output summation, To save m moment t ultra-short term；To pass through one when high-power missing The power of interconnection input level-2 area power grid m between grade regional power grid；Adjust m moment t new energy ultra-short term power output pre- to save It surveys；ΔP_m,tFor province m moment t load deviation；G_m,tFor province m moment t gross capability；P_m,maxMost for provincial dispatching unit Go out activity of force greatly；P_n,maxFor the maximum output power of level-1 area grid dispatching management unit n.

The unit output constraint, comprising:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

In formula: P_Ti,maxFor fired power generating unit maximum technology power output；P_Hi,maxFor Hydropower Unit maximum technology power output；P_Ni,maxFor New energy unit maximum technology power output；P_Ti,minFor fired power generating unit minimum technology power output；P_Hi,minGo out for Hydropower Unit minimum technology Power；P_Ni,minFor new energy unit minimum technology power output.

The unit ramp loss, comprising:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the fired power generating unit i unit time Climb power (MW/h).

The line power constraint, comprising:

In formula:For the lower limit of i-th interconnection transmission capacity；For the upper of i-th interconnection transmission capacity Limit；For the transimission power of route i moment t, when calculating, level-2 area grid dispatching management unit generation power is using real-time Plan generated output.

Based on same inventive concept, the present invention also provides a kind of coordination optimization systems of real-time generation schedule, comprising:

Spare capacity obtains module: obtaining level-2 area grid power vacancy, calculating level-2 area power grid can security invocation Spare capacity；

Second level real-time generation schedule module: when level-2 area grid power vacancy be greater than level-2 area power grid can safety When the spare capacity of calling, by establishing the real-time generation optimization plan of level-2 area, level-2 area grid dispatching management machine is adjusted Group power generation；

Level-one real-time generation schedule module: if level-2 area grid dispatching management unit generation amount is not enough to make up second level area Domain grid power vacancy is established the real-time generation optimization plan of level-1 area power grid, is adjusted then by establishing two stage optimization method Level-1 area grid dispatching management unit generation.

The spare capacity obtain module be calculate by the following formula level-2 area power grid can security invocation spare capacity:

Wherein: S_ResFor the level-2 area power grid can security invocation spare capacity, S_mFor level-2 area dispatching of power netwoks pipe Manage unit can security invocation spare capacity, S_nFor level-1 area grid dispatching management unit can security invocation spare capacity； S_AGCmFor level-2 area grid dispatching management unit AGC unit can security invocation spare capacity, S_AGCnFor level-1 area power grid tune Degree management unit AGC unit can security invocation spare capacity；k_mFor the standby of level-2 area grid dispatching management unit AGC unit With safe proportionality coefficient；k_nFor the back-up safety proportionality coefficient of level-1 area grid dispatching management unit AGC unit；C_AGCmIt is two The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCmFor the spare capacity of non-AGC unit；C_AGCnIt is one The spare capacity of the AGC unit of grade regional power grid management and running unit；C_NAGCnFor the non-of level-1 area grid dispatching management unit The spare capacity of AGC unit.

The second level real-time generation schedule module, comprising:

Second level real-time generation schedule submodule: about based on the constraint of broad sense tie line plan, unit output constraint, unit climbing Beam and line power constraint, with the minimum adjusting target of the expense of generating electricity, by adjusting each level-2 area power grid tune in level-1 area The broad sense tie line plan slack variable of degree management unit, establishes the real-time generation optimization plan of level-2 area.

The adjusting target of the second level real-time generation schedule submodule is calculated as follows, comprising:

In formula: F_pFor the power generation expense of fired power generating unit in level-2 area power grid；F₀For fired power generating unit in level-1 area power grid Power generation expense；ΔP_m,tTo save the broad sense tie line plan slack variable for adjusting m moment t；For unit relaxation punishment cost；f (P_mi,t) be level-2 area power grid in fired power generating unit m the t period power generation expense；N_mFor equivalent fire total in level-2 area power grid Motor group number；T is scheduling slot number；

The constraint condition of real-time generation optimization model between level-2 area power grid includes: the constraint of broad sense tie line plan, machine Group units limits, unit ramp loss and line power constraint.

The broad sense tie line plan of the second level real-time generation schedule submodule constrains, and is calculated as follows:

Wherein,To save m moment t ultra-short term；To pass through level-1 area power grid when high-power missing Between interconnection input level-2 area power grid m power；The power output prediction of m moment t new energy ultra-short term is adjusted to save, The fired power generating unit of m moment t is adjusted to plan summation of contributing in real time to save, The Hydropower Unit of m moment t is adjusted to plan summation of contributing in real time to save,

The unit output of the second level real-time generation schedule submodule constrains, and is calculated as follows:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

Wherein, P_Ti,maxFor equivalent fired power generating unit maximum technology power output；P_Hi,maxFor equivalent Hydropower Unit maximum technology power output； P_Ni,maxFor equivalent new energy unit maximum technology power output；P_Ti,minFor equivalent fired power generating unit minimum technology power output, P_Hi,minIt is equivalent Water power minimum technology power output, P_Ni,minFor equivalent new energy unit minimum technology power output.

The unit ramp loss are as follows:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the fired power generating unit i unit time Climb power (MW/h).

The line power of the second level real-time generation schedule submodule constrains, and is calculated as follows:

In formula:For the lower limit of i-th interconnection transmission capacity；The upper limit of i-th interconnection transmission capacity；For the transimission power of route i moment t, when calculating, level-1 area grid dispatching management unit generation power takes plan hair a few days ago Electrical power.

The level-one real-time generation schedule module, comprising:

Level-one real-time generation schedule submodule: about based on the constraint of broad sense tie line plan, unit output constraint, unit climbing Beam and line power constraint, with the minimum adjusting target of the expense of generating electricity, by adjusting each level-1 area power grid tune in level-1 area The broad sense tie line plan slack variable of degree management unit, establishes the real-time generation optimization plan of level-1 area power grid grade

The adjusting target of the level-one real-time generation schedule module, is calculated as follows:

In formula, Δ P_n,tFor the broad sense tie line plan slack variable of moment t in level-1 area power grid；F_RFor level-1 area The power generation expense of fired power generating unit in power grid grade power grid；F₀For the power generation expense of fired power generating unit in level-1 area power grid；ΔP_n,tIt is one Broad sense tie line plan slack variable of the grade regional power grid management and running unit n in moment t；For unit relaxation punishment cost； f(P_ni,t) be level-1 area power grid grade power grid in fired power generating unit n the t period power generation expense；N_nFor level-1 area power grid grade power grid Interior total equivalent fired power generating unit number；

The constraint condition of broad sense tie line plan in level-1 area power grid includes: the constraint of broad sense tie line plan, unit Units limits, unit ramp loss, line power constraint.

The broad sense tie line plan of the level-one real-time generation schedule module constrains, and is calculated as follows:

In formula:Plan summation of contributing in real time for the fired power generating unit of level-1 area grid dispatching management unit n moment t, Plan power output in real time always for the Hydropower Unit of level-1 area grid dispatching management unit n moment t With, New energy unit for level-1 area grid dispatching management unit n moment t is planned in real time Power output summation, To save m moment t ultra-short term；To pass through one when high-power missing The power of interconnection input level-2 area power grid m between grade regional power grid；Adjust m moment t new energy ultra-short term power output pre- to save It surveys；ΔP_m,tFor province m moment t load deviation.G_m,tFor province m moment t gross capability.

The unit output of the level-one real-time generation schedule module constrains, and is calculated as follows:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

In formula: P_Ti,maxFor fired power generating unit maximum technology power output；P_Hi,maxFor Hydropower Unit maximum technology power output；P_Ni,maxFor New energy unit maximum technology power output；P_Ti,minFor fired power generating unit minimum technology power output；P_Hi,minGo out for Hydropower Unit minimum technology Power；P_Ni,minFor new energy unit minimum technology power output；P_T,itFor thermoelectricity moment t gross capability；P_H,itIt is water power electricity in moment t Gross capability；P_N,itFor equivalent new energy moment t gross capability.

The unit ramp loss of the level-one real-time generation schedule module, is calculated as follows:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the fired power generating unit i unit time Climb power (MW/h).

The line power of the level-one real-time generation schedule module constrains, and is calculated as follows:

In formula:For the lower limit of i-th interconnection transmission capacity；For the upper of i-th interconnection transmission capacity Limit；For the transimission power of route i moment t, when calculating, level-2 area grid dispatching management unit generation power is using real-time Plan generated output.

Embodiment 3:

China's electric system uses the mode of " United Dispatching, differentiated control ".But with the construction of extra-high voltage interconnected network It deepens continuously, each regional power grid connection is increasingly close, has gradually broken subregion point and has saved balanced mode, has gradually formed power grids at different levels The pattern of coordinated development, power grids at different levels need integrated coordinated operation, are uniformly coordinated operation control, are just able to achieve in larger scope Most optimum distribution of resources, therefore, not only having between scheduling at different levels respective separate traffic but also has interactional incidence relation.

For current three Levels Scheduling scheduled mode, the main business of state's tune is establishment great Qu tie line plan, is completed The annual and monthly electricity transaction of great Qu, it is ensured that the reasonable distribution of transregional generation planning.The main business of branch center is that establishment saves Between tie line plan, complete secondary distribution between the province of great Qu tie line plan, it is ensured that electricity transaction executes and straight adjusts electricity between province The reasonability of factory's plan.Provincial scheduling main business is to work out power plant's plan inside the province, it is ensured that three public practicable, energy-saving and emission-reduction and power grid Operational safety.

Generating set is broadly divided into fired power generating unit, Hydropower Unit and new energy unit.For generating set management and running, Generating set in one province domain can be divided into provincial power network management and running unit (provincial dispatching unit) and regional power grid management and running machine Group (grid dispatching unit).The former executes the operation plan of provincial power grid dispatching center establishment, and the latter executes regional power grid control centre The operation plan of (branch center) establishment.

For system loading, the load in a province domain is by following four aspects power common equilibrium.

(1) generated output of provincial dispatching unit；

(2) generated output of grid dispatching unit；

(3) interconnection feed-in power in regional power grid；

Interconnection feed-in power between regional power grid, if without interconnection between regional power grid, this aspect power in the province domain Feed-in is transferred by interconnection in regional power grid.

It is as follows to save net power balance equation formula:

In formula: P_LTo save net total load；

P_Tm、P_Wm、P_NmRespectively save fire tuning electricity, water power, new energy unit generated output；

P_Tn、P_Wn、P_NnRespectively net fire tuning electricity, water power, new energy unit generated output；

Respectively pass through the power of interconnection between saving, the input of interregional interconnection.

State's net, regional power grid (branch center), relationship such as Fig. 2 between provincial power network three-level grid generation plan, wherein area Tie line plan is worked out by the control centre Guo Wang between domain.

In actual motion, cause big function when catastrophe failure occurs for the feeder lines such as extra-high voltage direct-current system or extra-high-voltage alternating current When rate lacks, ensure the peace of system by cutting the control measure such as machine, cutting load, HVDC Modulation according to the Policy Table formulated in advance Entirely, stable operation.But maintain the emergent control measure of transient stability that can not usually fill up the power shortage of system, it is even more impossible to protect Demonstrate,prove steady in a long-term, the economical operation of system after high-power missing.

At this stage, power grids at different levels generally use generation schedule Optimized model at home a few days ago, but system loading is pre- a few days ago Survey, the prediction of new energy power output and model approach and physical presence relatively large deviation a few days ago a few days ago, cause a few days ago power output plan in reality It needs significantly to adjust in execution, to Automatic Generation Control (AGC), adjustment brings immense pressure in real time.It is general to be counted using power generation in real time Establishment is drawn as the amendment planned a few days ago, based on ultra-short term prediction data, 5min is the unit hair for calculating future 1h the period Electricity plan, period rolling amendment generation schedule a few days ago.Real-time generation schedule workout system is real in regional power grid and provincial power network It is run with changing, real-time generation schedule net, which saves, to be coordinated to be counted between province using geographical interconnection as critical point based on main Yi Fen province balance Establishment is drawn, but does not consider only have part by provincial power network management and running, regional power grid management and running in generating set in province domain This actual conditions of generating set in multiple province domains.

By net save a few days ago generation schedule, in region based on tie line plan and interregional tie line plan, it is high-power to lack After mistake, state point saves real-time generation schedule coordinate scheme process such as Fig. 3.

After certain saves the high-power missing of appearance, state point saves the detailed process that real-time generation schedule is coordinated are as follows:

Step 1: obtaining and save net power shortage, calculate inside the province unit can security invocation spare capacity, and compare；

Step 2: if power shortage be greater than inside the province unit can security invocation spare capacity, pay the utmost attention in region it It saves net power and supports, and is implemented in the form of interconnection between branch center (net is adjusted) modification saves；

Step 3: provincial power network according to ultra-short term, save and adjust the ultra-short term power generation prediction, new of new energy unit The establishment such as feed-in power real-time generation schedule, instructs provincial dispatching unit to transport outside region between province after tie line plan and high-power missing Row；

Step 4: regional power grid adjusts the ultra-short term power generation of new energy unit to predict, is provincial according to ultra-short term, net Feed-in power etc. works out real-time generation schedule, guidance outside region after power grid real-time generation schedule vacancy power and high-power missing The operation of regional power grid management and running unit.If provincial power network management and running unit can satisfy provincial power network real-time generation schedule Needs, then do not need regional power grid support, at this point, provincial power network real-time generation schedule vacancy power be 0；

Step 5: it if regional power grid scheduling unit can satisfy the needs of regional power grid real-time generation schedule, is not required to State's net is wanted to support, otherwise, state's net needs tie line plan between modifier area, and proceeds as described above again.

According to control mode difference, unit can be divided into four classes inside the province: provincial dispatching AGC unit saves and non-AGC unit, net is adjusted to adjust AGC Unit and grid dispatching non-AGC unit.

Assuming that the spare capacity of provincial dispatching AGC unit is C_AGCm, save that adjust the spare capacity of non-AGC unit be C_NAGCm, net adjust AGC The spare capacity of unit is C_AGCn, grid dispatching non-AGC unit spare capacity be C_NAGCn.Spare capacity S can then be adjusted safely inside the province_Res Are as follows:

Wherein: S_m、S_nRespectively provincial dispatching unit, grid dispatching unit can security invocation spare capacity；

S_AGCm、S_AGCnRespectively provincial dispatching AGC unit, grid dispatching AGC unit can security invocation spare capacity；

k_m、k_nThe respectively back-up safety proportionality coefficient of provincial dispatching AGC unit, grid dispatching AGC unit.

Modern power systems typically set up multi-stage power control centre and carry out decentralized coordinating scheduling to interacted system, to reduce Calculation scale reduces data traffic and each regional power grid self-government is kept to run, but the relative independentability of scheduling at different levels It is cumbersome to result in co-ordination.

This technology is firstly introduced into broad sense tie line plan, and then building adapts to high-power missing, ultra-short term, surpasses The provincial real-time generation schedule model of short-term generation of electricity by new energy prediction.

Under currently to save the scheduling method for equilibrium region, transprovincially transregional most optimum distribution of resources is mainly with tie line plan Form emerge from.If certain save power shortage be greater than inside the province unit can security invocation spare capacity, pay the utmost attention to region Interior other province's net power are supported, and such support is implemented in the form of interconnection between branch center (regional power grid control centre) modification saves. After establishing high-power missing, dominant eigenvalues Optimal Operation Model between province.

It is main to consider following two aspect between modification saves after high-power missing when dominant eigenvalues plan:

1, fired power generating unit power generation expense is minimum in region；

2, dominant eigenvalues variable quantity is as small as possible between saving, that is, wishes dominant eigenvalues and electricity between the original province of maintenance.

Therefore, dominant eigenvalues and when dominant eigenvalues have deviation between save a few days ago between saving after the high-power missing, by deviation The form for being converted into rejection penalty is added in objective function.

In formula: f (P_i,t) it is power generation expense of the fired power generating unit i in the t period；

P_i,tFor fired power generating unit i the t period power output；

P_tj,tFor t period j-th strip dominant eigenvalues value in the works a few days ago；

For modified t period j-th strip dominant eigenvalues value；

C is dominant eigenvalues deviation penalty coefficient；

N_TFor equivalent fired power generating unit number total in regional power grid；

N_LLine number is got in touch between province；

T is scheduling slot number.

According to DC power flow calculating method, have:

P=B θ (4)

P_l=Y_BAθ (5)

In formula: P is each node injecting power column vector；

B is DC network node admittance matrix；

θ is node voltage phase angle column vector；

P_lFor branch active power column vector；

Y_BThe diagonal matrix formed for branch admittance；

A is network associate matrix.

The relationship between branch power and node active injection power can be obtained by (4), (5).

P_l=Y_BAB^-1P (6)

(6) formula also contains the relationship between province between dominant eigenvalues and node active injection power, after substituting into (3) formula, Amount to be asked in objective function just only has node injecting power.

Since main study subject is provincial dominant eigenvalues, the operation plan for being accurate to unit is then arranged in provincial scheduling Middle consideration.Therefore power supply according to province is expressed as equivalent unit in a model, simulates calculation amount with very big reduction.Optimal Operation Model In mainly consider following constraint condition.

1) power-balance constraint

In formula: N_T、N_H、N_NEquivalent thermoelectricity, water power, new energy unit number respectively in region；

P_Ti,t、P_Hj,t、P_Nk,tRespectively i-th equivalent fired power generating unit, the equivalent Hydropower Unit of jth platform, the equivalent new energy of kth platform The generated output of source unit t period；

P_L,tSend for t period region load and to outside area the sum of power outside.

2) generated output constrains

P_Ti,min≤P_Ti,t≤P_Ti,max (8)

P_Hi,min≤P_Hi,t≤P_Hi,max (9)

P_Ni,min≤P_Ni,t≤P_Ni,max (10)

In formula: P_Ti,max、P_Hi,max、P_Ni,maxRespectively equivalent thermoelectricity, water power, new energy unit maximum technology power output；

P_Ti,min、P_Hi,min、P_Ni,minRespectively equivalent thermoelectricity, water power, new energy unit minimum technology power output；

3) dominant eigenvalues constrain

In formula:The respectively lower limit of j-th strip interconnection transmission capacity, the upper limit.

The foundation of broad sense tie line plan: assuming that it includes saving that m and net is adjusted to adjust two parts n that certain, which saves generating set, then a few days ago Broad sense tie line plan is defined as:

In formula: P_Lm,tIt is predicted to save system loading before t days m moment；

To input the power for saving m by interregional interconnection；

P_Nm,tTo save new energy power output prediction before the t days m moment of tune；

P_Nn,tNew energy power output before t days n moment is adjusted to predict for net；

P_m,max、P_n,maxM, net is adjusted to adjust n installed capacity to save；

P_Tm,t、P_Wm,tTo save the fired power generating unit for adjusting m moment t, Hydropower Unit power output summation；

P_Tn,t、P_Wn,tFired power generating unit, the Hydropower Unit power output summation of n moment t are adjusted for net；

G_m,tTo save the broad sense tie line plan a few days ago for adjusting m moment t；

G_n,tThe broad sense tie line plan a few days ago of n moment t is adjusted for net.

It is available by formula (1), (13), (14):

In formula:Interconnection is a few days ago by electrical power between saving for province m moment t.

Above formula, which shows to save, adjusts a few days ago that be equal to should for the sum of broad sense tie line plan a few days ago for broad sense tie line plan and respective wire tune It saves and is planned a few days ago by electricity by interconnection between saving, therefore, as long as provincial power network and the optimization of regional power grid real-time generation schedule are simultaneously The respective broad sense tie line plan a few days ago of tracking, can make between practical provinces interconnection by electricity plan track between province a few days ago interconnection by Electricity plan guarantees that provincial power network and the real-time planning system of regional power grid run parallel, does not interfere with each other.

The foundation of provincial real-time generation optimization model when high-power missing: generating plan model is very perfect a few days ago, and It is used widely, but since load, new energy forecast to forecast that there are bigger differences, and extra-high-voltage alternating current line with ultra-short term a few days ago Road or the extra-high voltage direct-current system failure cause the reasons such as high-power missing, and generation schedule can not continue to execute a few days ago, it is necessary to work out Real-time generation schedule removes rolling amendment generation schedule a few days ago.

The objective function of provincial real-time generation optimization model foundation:

In formula: Δ P_m,tTo save the broad sense tie line plan slack variable for adjusting m moment t；

For unit relaxation punishment cost.

The constraint condition of provincial real-time generation optimization model foundation:

The constraint of broad sense tie line plan

In formula:To save m moment t ultra-short term；

For the power for saving m is inputted when high-power missing by interregional interconnection；

The power output prediction of m moment t new energy ultra-short term is adjusted to save,

The fired power generating unit of m moment t is adjusted to plan summation of contributing in real time to save,

The Hydropower Unit of m moment t is adjusted to plan summation of contributing in real time to save,

Unit output constraint

It can refer to formula (8) (9) (10).

Unit ramp loss

Unit ramp loss is a kind of coupled relation between adjacent time section unit output, and reflection is unit generation The regulations speed of power.The air intake that unit active power needs to adjust steam turbine is adjusted, when air intake flow increases, unit Active power improves；When air intake flow reduces, unit active power is reduced.And this process, it is not to complete moment, needs Want the regular hour.Therefore, in the unit time, the power that unit can raise and (also referred to as climb) or lower and (also referred to as come down) is Limited.The Climing constant of unit can be expressed as follows:

In formula:--- the landslide power (MW/h) of fired power generating unit i unit time；

--- the climbing power (MW/h) of fired power generating unit i unit time.

Line power constraint

In formula:The lower limit of respectively i-th interconnection transmission capacity, the upper limit；

For the transimission power of route i moment t, when calculating, grid dispatching unit generated output takes plans generated output a few days ago.

When regional power grid and provincial power network real-time generation schedule coordinate and optimize, regional power grid real-time generation schedule Optimized model It equally introduces each net and adjusts broad sense tie line plan constraint a few days ago.Regional power grid includes multiple grid dispatching units inside the province, and there are multiple provinces Net tune a few days ago broad sense tie line plan constrain, if certain save net tune a few days ago broad sense tie line plan constraint cannot strictly at It is vertical, it overflows, then provides support by the grid dispatching unit in other provinces, guarantee that regional power grid management and running unit is performed integrally partially Poor commitment amount, however, the net tune broad sense tie line plan constraint a few days ago that province is supported in the net reconciliation offer for overflowing province all can not be stringent It sets up, to distinguish the spilling and support state that net is adjusted, regional power grid side uses two stages optimal way, analyzed area power grid each province The tracking situation of the tie line plan of broad sense a few days ago of grid dispatching unit.

The foundation of perfecting by stage model inside the province when high-power missing:

The objective function of perfecting by stage model foundation inside the province when high-power missing:

In formula: Δ P_n,tThe broad sense tie line plan slack variable of n moment t is adjusted for net；

For unit relaxation punishment cost.

The constraint condition of perfecting by stage model foundation inside the province when high-power missing:

The constraint of broad sense tie line plan

In formula:The fired power generating unit of n moment t is adjusted to plan summation of contributing in real time for net,

The Hydropower Unit of n moment t is adjusted to plan summation of contributing in real time for net,

The new energy unit of n moment t is adjusted to plan summation of contributing in real time for net,

Unit output constraint:

The units limits of thermoelectricity, water power, new energy unit are referring to (8)-(10) formula in grid dispatching unit.

Unit ramp loss:

Net adjusts the Climing constant of fired power generating unit to can refer to (18) formula.

Line power constraint:

Line power constraint can refer to (19) formula, but when the transimission power of calculating route i moment t, provincial dispatching unit power generation function Rate should be using plan generated output in real time.

The foundation of high-power missing time domain perfecting by stage model: if Δ P_n,tIt is 0, then illustrates interregional fault of interconnected transmission line Adjustable province's tune inside the province completely such as caused high-power missing, provincial load prediction error, new energy power output prediction error Unit, grid dispatching unit power output are to balance.Otherwise coordination optimization in starting region power grid is just needed, is supported just by other units inside the province It can power-balance.

The objective function of perfecting by stage model foundation inside the province when high-power missing:

Optimization aim is fired power generating unit power generation total cost and each grid dispatching unit broad sense interconnection overall balance in region in region Committed cost:

In formula: Δ P_A,tSlack variable is constrained for grid dispatching unit broad sense interconnection overall balance each in region；

For unit relaxation punishment cost.

The constraint condition of perfecting by stage model foundation inside the province when high-power missing:

Each grid dispatching unit broad sense tie line plan overall balance constraint in region:

Unit output constraint:

The units limits of thermoelectricity in unit, water power, new energy unit are referring to (8)-(10) formula in region.

Unit ramp loss:

The Climing constant of fired power generating unit can refer to (17) formula in region.

Line power constraint:

Line power constraint can refer to (18) formula.But when calculating the transimission power of route i moment t, each generated output inside the province Plan generated output in real time should be taken.

If Δ P_A,tIt is 0, then illustrates high-power missing caused by interregional fault of interconnected transmission line, provincial load prediction error, new Energy power output prediction error etc. can balance completely by adjusting unit output in region.Otherwise electricity between adjustment region is just needed Net dominant eigenvalues plan, being supported by unit in other regions could power-balance.

Objective function, constraint condition and its method for solving of interregional dominant eigenvalues planning optimization model can join completely According to objective function, constraint condition and its method for solving of dominant eigenvalues planning optimization model between province.

Obviously, described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on the present invention In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.

It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it It is interior.

Claims (16)

1. a kind of coordination optimizing method of real-time generation schedule characterized by comprising

Obtain level-2 area grid power vacancy, calculate level-2 area power grid can security invocation spare capacity；

When the vacancy of level-2 area grid power be greater than level-2 area power grid can safety calling spare capacity when, pass through foundation The real-time generation optimization plan of level-2 area adjusts level-2 area grid dispatching management unit generation；

If level-2 area grid dispatching management unit generation amount is not enough to make up level-2 area grid power vacancy, pass through foundation Two stage optimization method establishes the real-time generation optimization plan of level-1 area power grid, adjusts level-1 area grid dispatching management unit Power generation.

2. coordination optimizing method according to claim 1, which is characterized in that the level-2 area power grid can security invocation The calculation formula of spare capacity, as follows:

Wherein: S_ResFor the level-2 area power grid can security invocation spare capacity, S_mFor level-2 area grid dispatching management machine Group can security invocation spare capacity, S_nFor level-1 area grid dispatching management unit can security invocation spare capacity；S_AGCmFor Level-2 area grid dispatching management unit AGC unit can security invocation spare capacity, S_AGCnFor level-1 area dispatching of power netwoks pipe Manage unit AGC unit can security invocation spare capacity；k_mFor the spare peace of level-2 area grid dispatching management unit AGC unit Full scale coefficient；k_nFor the back-up safety proportionality coefficient of level-1 area grid dispatching management unit AGC unit；C_AGCmFor second level area The spare capacity of the AGC unit of domain grid dispatching management unit；C_NAGCmFor the spare capacity of non-AGC unit；C_AGCnFor level-one area The spare capacity of the AGC unit of domain grid dispatching management unit；C_NAGCnFor the non-AGC machine of level-1 area grid dispatching management unit The spare capacity of group.

3. a kind of coordination optimizing method of real-time generation schedule as described in claim 1, which is characterized in that the level-2 area The foundation of real-time generation optimization plan, comprising:

Based on the constraint of broad sense tie line plan, unit output constraint, unit ramp loss and line power constraint, with the expense of generating electricity Minimum adjusting target, by the broad sense tie line plan pine for adjusting each level-2 area grid dispatching management unit in level-1 area Relaxation variable establishes the real-time generation optimization plan of level-2 area.

4. a kind of coordination optimizing method of real-time generation schedule as described in power 3, which is characterized in that the adjusting target is as the following formula It calculates, comprising:

The objective function of implementation generation optimization model between the level-2 area power grid is calculated as follows:

In formula: F_pFor the power generation expense of fired power generating unit in level-2 area power grid；F₀For the power generation of fired power generating unit in level-1 area power grid Expense；ΔP_m,tTo save the broad sense tie line plan slack variable that timing carves t；For unit relaxation punishment cost；f(P_mi,t) be Power generation expense of the fired power generating unit m in the t period in level-2 area power grid；N_mFor equivalent fired power generating unit total in level-2 area power grid Number；T is scheduling slot number；

The constraint condition of real-time generation optimization model between level-2 area power grid includes: that broad sense tie line plan constrains, unit goes out Force constraint, unit ramp loss and line power constraint.

5. a kind of coordination optimizing method of real-time generation schedule as described in power 3, which is characterized in that the broad sense tie line plan Constraint are as follows:

Wherein,To save m moment t ultra-short term power；To pass through level-1 area power grid when high-power missing Between interconnection input level-2 area power grid m power；M moment t new energy ultra-short term power output prediction power is adjusted to save；The fired power generating unit of m moment t is adjusted to plan general power of contributing in real time to save；Adjust the Hydropower Unit of m moment t real-time to save Plan power output general power；ΔP_m,tFor province m moment t load deviation；G_m,tFor the gross capability of province m moment t；P_m,maxTo save Adjust the maximum output power of unit；P_n,maxPay for the maximum output power of management unit n first for level-1 area power grid.

6. a kind of coordination optimizing method of real-time generation schedule as described in power 4, which is characterized in that the unit output constraint Are as follows:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

Wherein, P_Ti,maxGo out activity of force for equivalent fired power generating unit maximum technology；P_Ti,tFor thermoelectricity moment t gross capability power； P_Hi,maxGo out activity of force for equivalent Hydropower Unit maximum technology；P_Hi,tFor water power electricity moment t gross capability power；P_Ni,maxFor etc. Effect new energy unit maximum technology goes out activity of force；P_Ni,tFor equivalent new energy moment t gross capability power；P_Ti,minIt is equivalent Fired power generating unit minimum technology goes out activity of force, P_Hi,minGo out activity of force, P for equivalent water power minimum technology_Ni,minFor equivalent new energy source machine Group minimum technology goes out activity of force.

7. a kind of coordination optimizing method of real-time generation schedule as described in power 4, which is characterized in that the unit ramp loss Are as follows:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the climbing of fired power generating unit i unit time Power (MW/h)；Go out activity of force in t moment for fired power generating unit i；For fired power generating unit i moment t-1 power output function Rate.

8. a kind of coordination optimizing method of real-time generation schedule as described in power 4, which is characterized in that the line power constraint Are as follows:

In formula:For the lower limit of the power of i-th interconnection transmission capacity；The power of i-th interconnection transmission capacity The upper limit；For the transimission power of route i moment t, when calculating, level-1 area grid dispatching management unit generation power is taken a few days ago Plan generated output.

9. a kind of coordination optimizing method of real-time generation schedule as described in claim 1, which is characterized in that the level-1 area The foundation of the real-time generation optimization plan of power grid grade, comprising:

Based on the constraint of broad sense tie line plan, unit output constraint, unit ramp loss and line power constraint, with the expense of generating electricity Minimum adjusting target, by the broad sense tie line plan pine for adjusting each level-1 area grid dispatching management unit in level-1 area Relaxation variable establishes the real-time generation optimization plan of level-1 area power grid grade.

10. a kind of coordination optimizing method of true generation schedule as claimed in claim 9, which is characterized in that the adjusting mesh Mark is calculated as follows:

In formula, Δ P_n,tFor the broad sense tie line plan slack variable of moment t in level-1 area grid dispatching management unit n；F_RFor The power generation expense of fired power generating unit in level-1 area power grid grade power grid；F₀For the power generation expense of fired power generating unit in level-1 area power grid；For unit relaxation punishment cost；f(P_ni,t) be level-1 area power grid grade power grid in fired power generating unit n the t period power generation expense With；N_nFor equivalent fired power generating unit number total in level-1 area power grid grade power grid；

The constraint condition of broad sense tie line plan in level-1 area power grid includes: the constraint of broad sense tie line plan, unit output Constraint, unit ramp loss, line power constraint.

11. coordination optimizing method as claimed in claim 9, which is characterized in that the broad sense tie line plan constraint, comprising:

In formula:Plan general power of contributing in real time for the fired power generating unit of level-1 area grid dispatching management unit n moment t； Plan general power of contributing in real time for the Hydropower Unit of level-1 area grid dispatching management unit n moment t；For level-1 area electricity The new energy unit of net management and running unit n moment t plans general power of contributing in real time；It is pre- to save m moment t super short period load Power scale；The power of level-2 area power grid m is inputted when for high-power missing by interconnection between level-1 area power grid； M moment t new energy ultra-short term power output prediction power, Δ P are adjusted to save_m,tFor province m moment t load deviation；G_m,tFor province m In the gross capability of moment t.

12. coordination optimizing method as claimed in claim 9, which is characterized in that the unit output constraint, comprising:

P_Ti,min≤P_Ti,t≤P_Ti,max

P_Hi,min≤P_Hi,t≤P_Hi,max

P_Ni,min≤P_Ni,t≤P_Ni,max

In formula: P_Ti,maxGo out activity of force for fired power generating unit maximum technology；P_Hi,maxGo out activity of force for Hydropower Unit maximum technology； P_Ni,maxGo out activity of force for new energy unit maximum technology；P_Ti,minGo out activity of force for fired power generating unit minimum technology；P_Hi,minFor water power Unit minimum technology goes out activity of force；P_Ni,minGo out activity of force for new energy unit minimum technology.

13. coordination optimizing method as claimed in claim 9, which is characterized in that the unit ramp loss, comprising:

In formula:For the landslide power (MW/h) of fired power generating unit i unit time；For the climbing of fired power generating unit i unit time Power (MW/h).

14. coordination optimizing method as claimed in claim 9, which is characterized in that the line power constraint, comprising:

In formula:For the lower limit of the power of i-th interconnection transmission capacity；For the function of i-th interconnection transmission capacity The rate upper limit；For the transimission power of route i moment t, when calculating, level-2 area grid dispatching management unit generation power is used Plan generated output in real time.

15. a kind of coordination optimization system of real-time generation schedule characterized by comprising

Spare capacity obtain module: obtain level-2 area grid power vacancy, calculate level-2 area power grid can security invocation it is standby Use capacity；

Second level real-time generation schedule module: when the vacancy of level-2 area grid power is greater than the calling that level-2 area power grid can be safe Spare capacity when, by establishing the real-time generation optimization plan of level-2 area, adjust level-2 area grid dispatching management unit hair Electricity；

Level-one real-time generation schedule module: if level-2 area grid dispatching management unit generation amount is not enough to make up level-2 area electricity Net power shortage establishes the real-time generation optimization plan of level-1 area power grid, adjusts level-one then by establishing two stage optimization method Regional power grid management and running unit generation.

16. coordination optimization system according to claim 15, which is characterized in that under the spare capacity acquisition module passes through Formula calculate level-2 area power grid can security invocation spare capacity:

Wherein: S_ResFor the level-2 area power grid can security invocation spare capacity, S_mFor level-2 area grid dispatching management machine Group can security invocation spare capacity, S_nFor level-1 area grid dispatching management unit can security invocation spare capacity；S_AGCmFor Level-2 area grid dispatching management unit AGC unit can security invocation spare capacity, S_AGCnFor level-1 area dispatching of power netwoks pipe Manage unit AGC unit can security invocation spare capacity；k_mFor the spare peace of level-2 area grid dispatching management unit AGC unit Full scale coefficient；k_nFor the back-up safety proportionality coefficient of level-1 area grid dispatching management unit AGC unit；C_AGCmFor second level area The spare capacity of the AGC unit of domain grid dispatching management unit；C_NAGCmFor the spare capacity of non-AGC unit；C_AGCnFor level-one area The spare capacity of the AGC unit of domain grid dispatching management unit；C_NAGCnFor the non-AGC machine of level-1 area grid dispatching management unit The spare capacity of group.