CN106911149A - A kind of active distribution network demand response control method based on layering energy storage - Google Patents
A kind of active distribution network demand response control method based on layering energy storage Download PDFInfo
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Abstract
The present invention relates to a kind of active distribution network demand response control method based on layering energy storage, coordinate responses strategy, cross-layer storage storage coordinate responses strategy are stored up including same layer source, lotus coordinate responses strategy and cross-layer source storage lotus coordinate responses strategy are stored up with layer source, it is used to stabilize the fluctuation of distributed energy networking realtime power on the spot with layer source storage coordinate responses strategy, cross-layer storage storage coordinate responses strategy is by solving the problems, such as this layer of feedback to the energy-storage system mandate in last layer power network, it is therefore an objective to improve the digestion capability of distributed power source；With layer source storage lotus coordinate responses strategy and cross-layer source storage lotus coordinate responses strategy, according to maximizing, dissolve distributed power generation, load are powered and the priority of energy storage economical operation optimizes control.The characteristics of by by energy-storage system layer-specific access power distribution network, not only having given full play to energy storage but also the economy of its application is improved, promote energy storage in the scale application of power system.
Description
Technical field
The present invention relates to a kind of active distribution network demand response control method based on layering energy storage.
Background technology
Demand response (demand response, DR) is power consumer is made sound by price signal or incentive mechanism
Should, the part throttle characteristics change for causing meets Operation of Electric Systems requirement.Being implemented with for demand response is beneficial to strengthen supply of electric power
Reasonability and reliability, promote optimization distribution of electric power resource etc..Carrying out the usable electric equipment of demand response has from motion tracking
The ability of power system change, both contributes to ensure power grid security, extensive clean energy resource of dissolving is conducive to again, but be currently based on
Price and the demand response of excitation the popularization and application driving force under existing policy and market environment are also inadequate, and demand is implemented in addition
Response needs to set up support system, is used to improve flexibility and the efficiency of demand response, and the key of demand response system is in response to
Ability, refer to response participant change itself electricity consumption behavior, adjustment power load and relevant device ability, including response intensity and
Response time, it is related to the problem that construction cost is higher and delayed response time, response deficiency occurs and responds excessively.
Energy storage accesses the characteristic for changing power system " i.e. hair is used ", and power system is become into more flexible, can be effective
Improve security, economy, the flexibility of operation of power networks；Flexibly controllable participation demand response is conducive to improving response for energy storage output
Speed and the flexibility of increase response, had not only contributed to electric power netting safe running but also be conducive to distributed power source of dissolving, but the skill of energy storage at present
The economy of art can't fully meet the demand of power system, it is necessary to according to functional localization reasonable selection on-position and appearance
Amount the characteristics of not only given full play to energy storage and can improve the economy applied, rush, it is necessary to propose the operation control strategy of high-efficiency and economic
Enter scale application of the energy storage in power system.
At present, grid company, electricity power enterprise, user etc. recognize application prospect of the energy storage technology in power system, but
Popularization and application still suffer from certain difficulty, and Large Copacity energy storage cost first is still bigger than normal, and secondly supporting policy is clear not enough, the
Three administrative mechanisms are left to be desired；Therefore, application scheme of the optimization energy storage in power system improves economy, is conducive to promoting and stores up
Can industry development.
And, existing power system and demand response control strategy cannot effectively realize demand response control, easily
Cause grid power to fluctuate, influence the reliability service of power network.
The content of the invention
It is an object of the invention to provide a kind of active distribution network demand response control method based on layering energy storage, for right
Power system carries out the control of effective demand response.
To achieve the above object, the solution of the present invention includes a kind of active distribution network demand response control based on layering energy storage
Method processed, including four control strategies, are respectively that coordinate responses strategy, same is stored up-stored up to same layer source-storage coordinate responses strategy, cross-layer
Layer source-storage-lotus coordinate responses strategy and cross-layer source-storage-lotus coordinate responses strategy,
The same layer source-storage coordinate responses strategy is：Using the distributed power source and energy storage system that are connected to same layer power network
System carries out demand response；
Coordinate responses strategy is stored up-stored up to the cross-layer：Rung when the same layer source-storage coordinate responses strategy cannot meet demand
At once, demand response is carried out using the corresponding energy-storage system in last layer power network；
The same layer source-storage-lotus coordinate responses strategy is：Storing up-store up coordinate responses strategy when the cross-layer cannot meet need
When asking response, response is coordinated using the distributed power source in same layer power network, energy-storage system and load；
Cross-layer source-storage-lotus coordinate responses the strategy is：When the same layer source-storage-lotus coordinate responses strategy cannot meet
During demand response, response is coordinated using the distributed power source in last layer power network, energy-storage system and load.
In the same layer source-storage coordinate responses strategy, when distributed power source output power is more than setting power, energy storage system
System absorbs the dump power more than setting power；When distributed power source output power is less than the setting power, energy-storage system
Corresponding power shortage is provided, distributed power source output power is equal to the setting work(with energy-storage system power output sum
Rate.
When the same layer source-storage coordinate responses strategy cannot meet demand response, coordinate the energy storage in last layer power network
System, energy-storage system increase charge power or reduction discharge power in control last layer power network are responded.
In the same layer source-storage-lotus coordinate responses strategy,
When this layer of power network needs to increase power consumption or reduce the power of upper layer power network conveying, can judgement lead to
Cross put into the load in this layer of power network meet response require, if it is not, judge can be by the energy storage in this layer of power network
System increases charge power or reduction discharge power to meet response requirement, if it is not, can judgement reduce this layer of electricity
The power output of the distributed power source in net is required to meet to respond, if it is not, judging that the same layer source-storage-lotus is coordinated
Response policy cannot meet response and require；
When this layer of power network needs to reduce power consumption or increase the power of upper layer power network conveying, can judgement lead to
Crossing increases the power output of the distributed power source in this layer of power network and requires meeting response, if it is not, can judgement pass through
Energy-storage system in this layer of power network reduces charge power or increase discharge power to meet response requirement, if it is not, sentencing
It is disconnected that response requirement can be met by exiting the load in this layer of power network, if it is not, judging the same layer source-storage-lotus
Coordinate responses strategy cannot meet response and require.
In the cross-layer source-storage-lotus coordinate responses strategy,
When this layer of power network needs to increase power consumption or reduce the power of upper layer power network conveying, can judgement lead to
The load crossed in input last layer power network is required to meet to respond, if it is not, can judgement by last layer power network
Energy-storage system increase charge power or reduce discharge power come meet response require, if it is not, judge can reduce on
The power output of the distributed power source in one layer of power network is required to meet to respond, if it is not, judging the cross-layer source-storage-
Lotus coordinate responses strategy cannot meet response and require, send alarm signal；
When this layer of power network needs to reduce power consumption or increase the power of upper layer power network conveying, can judgement lead to
The power output of the distributed power source crossed in increase last layer power network is required to meet to respond, if it is not, can judgement lead to
The energy-storage system crossed in last layer power network reduces charge power or increase discharge power to meet response requirement, if it could not,
Then judge can be met by exiting the load in last layer power network response require, if it is not, judge the cross-layer source-
Storage-lotus coordinate responses strategy cannot meet response and require, send alarm signal.
In the active distribution network demand response control method based on layering energy storage that the present invention is provided, including four control plans
Slightly, be respectively same layer source-storage coordinate responses strategy, cross-layer store up-store up coordinate responses strategy, with layer source-storage-lotus coordinate responses strategy
With cross-layer source-storage-lotus coordinate responses strategy, wherein, be used to stabilize distributed energy on the spot and enter with layer source-storage coordinate responses strategy
Net realtime power is fluctuated, and based on the thought of quick response on the spot, this layer of problem level as same as possible is solved, and is carried beyond control
Level solution is handed in, this is the embodiment of system fraction, and energy-storage system plays power supply/load dual role, with reference to distributed power source
Carry out realtime power regulation, it is therefore an objective to reduce the fluctuation of distributed power source power output, realize that overall output power meets setting mesh
Scale value, by optimizing the influence reduced to power network on the spot.Cross-layer is stored up-is stored up coordinate responses strategy and accessed for solving Thief zone photovoltaic
Demand, realization is dissolved to greatest extent, by solving the problems, such as this layer of feedback, purpose to the energy-storage system mandate in last layer power network
It is the digestion capability for improving distributed power source, while being conducive to being lifted the utilization level of energy-storage system；By coordinating last layer electricity
Energy-storage system is dissolved this layer of distributed power generation surplus in net, meets the power conservation and capacity limit in the electric power system dispatching cycle
Deng response.It is used to carry out plan response with layer source-storage-lotus coordinate responses strategy and cross-layer source-storage-lotus coordinate responses strategy, cuts
Peak load, emergency use etc., two kinds of strategies need to all be dissolved on the basis of active distribution network stable operation is ensured according to maximization
Distributed power generation, load are powered and the priority of energy storage economical operation optimizes control.
Therefore, by by energy-storage system layer-specific access power distribution network, by system fraction and responsibility mandate, each layer power network is played
The initiative and creativeness of middle energy-storage system, meet the quick significant response of Operation of Electric Systems demand, improve distributed power source
Permeability, the characteristics of not only given full play to energy storage but also improve the economy of its application, promote energy storage in the scale of power system
Using.
Brief description of the drawings
Fig. 1 is power system topological structure schematic diagram；
Fig. 2 is same layer source-storage topological structure schematic diagram；
Fig. 3 is same layer source-storage coordinate responses strategic process figure；
Fig. 4 is that topological structure schematic diagram is stored up-stored up to cross-layer；
Fig. 5 is that coordinate responses strategic process figure is stored up-stored up to cross-layer；
Fig. 6-a are direct current networks with layer source-storage-lotus topological structure schematic diagram；
Fig. 6-b are AC networks with layer source-storage-lotus topological structure schematic diagram；
Fig. 7 is same layer source-storage-lotus coordinate responses strategic process figure；
Fig. 8 is cross-layer source-storage-lotus topological structure schematic diagram；
Fig. 9 is cross-layer source-storage-lotus coordinate responses strategic process figure.
Specific embodiment
The present embodiment provides a kind of power system, and the active based on layering energy storage in order to implement present invention offer is matched somebody with somebody
Power network demand response control method, needs at least to be related to two-layer power network in the power system that the present embodiment is provided, that is to say, that should
Power system has essentially consisted of two-layer power network, and distributed power source, energy-storage system and load are equipped with every layer of power network, except this two
Outside layer power network, one layer or multilayer power grid can also be set, as shown in figure 1, providing a kind of specific electricity in the power system
Force system topological structure.In the present embodiment, " load " and " flexible load " in each topology diagram represents load；Distribution
By taking photovoltaic generation as an example, certainly, used as other embodiments, distributed power source can also be hydroelectric generation or wind-force to formula power supply
Generate electricity；" energy storage " is energy-storage system.So, although foregoing description is to be layered power network, has storage in different power network layers
Energy system, but, the essence for realizing demand response control method is：The energy-storage system for accessing active distribution network is divided
Layer, will energy-storage system distribution be arranged in different power networks layers.Formulate every layer of power and responsibility of energy storage and to concentrating energy storage to award
Power, existing system fraction has mandate, effectively plays the initiative and creativeness of energy storage at different levels again, makes its operation to power system
Demand makes significant response in time, is conducive to problem quickly to solve on the spot, prevents problem from magnifying, the controllable money between level
Source is cooperateed with, and may advantageously facilitate the development of power system response response, at the same take into full account energy storage investment and operation maintenance into
Sheet, the compensation of demand response, income and energy-conservation loss income etc. are stored with reference to electricity price difference, realize that overall economic efficiency is maximum
Change.
As shown in figure 1, power distribution network and power transmission network demarcates QF1 at, by energy storage according to access voltage class be divided into 10kV with
380V exchanges two-layer, and the energy-storage system accessed in 10kV alternating current stratum reticulares is referred to as concentrating energy storage, 380V alternating currents stratum reticulare and 700V
The energy-storage system accessed in direct current stratum reticulare is referred to as distributed energy storage.For convenience of describing, specify in the present embodiment to power network direction
For just, consumption power is negative, by taking power at QF1 in Fig. 1 as an example, P1 conveys power to conveying power just to represent to upper strata power network,
P1 represents consumption grid power for negative, and the positive negative indication of power at other is identical with this.
Based on above-mentioned power system, the present invention provides a kind of demand response control method, and the method includes four control plans
Slightly, be respectively same layer source-storage coordinate responses strategy, cross-layer store up-store up coordinate responses strategy, with layer source-storage-lotus coordinate responses strategy
With cross-layer source-storage-lotus coordinate responses strategy.In the present embodiment, for convenience of description, " this layer of power network " is with 380V exchange layers
Example, " last layer power network " is by taking 10kV exchange layers as an example.Certainly, as other implementation methods, " this layer of power network " and " last layer electricity
Net " can also be the adjacent two power network layer of other voltage class." this layer of power network " and " last layer power network " belongs to power distribution network,
" last layer power network " connects power transmission network.The demand response control method that the present invention is provided is mainly used in the demand response of power distribution network
Control.
With layer source-storage coordinate responses strategy generally：Using the distributed power source and energy storage system that are connected to same layer power network
System carries out power coordination control.It is specific as follows：
The power swing of distributed power generation is stabilized for energy storage with layer source-storage coordinate responses strategy, the effect of energy storage is similar to
River is played regulatory role in lake, photovoltaic power output pulsation is reduced by optimizing on the spot, the allocation ratio of wherein energy storage is
Key, excessive economic benefit is relatively low, too small to meet requirement；For photovoltaic generation, energy storage is configured to enough stabilize just
The output pulsation of reason condition.Light is formed by the energy-storage system that proper proportion is configured to photovoltaic generation and contains body, such as Fig. 2
It is shown.
As shown in Fig. 2 light contains body is exchanged for P2 with network re-active power, photovoltaic power is output as P21, energy storage power
It is P22, idle and loss factor is not considered, light contains body and meets formula 1 with the power that exchanges of power network under normal circumstances.
P2=P21+P22 (1)
Output power curve is formulated according to generating information of forecasting, the output of photovoltaic realtime power is calculated by tracking and is formulated
Power output between difference, when photovoltaic power output more than formulate power output when, energy-storage system is charged, with inhale
Receive surplus power；When photovoltaic power output is less than the power output formulated, energy storage system discharges, to make up power output not
Foot, it is ensured that light contains body power output and target power, that is, the power formulated is consistent, it is ensured that bent according to the power output formulated
Line is exported, and specific control flow is as shown in Figure 3.
As shown in figure 3, starting with layer source-storage coordinate responses strategy, power output is formulated according to photovoltaic generation information of forecasting
Curve P2, then detects the real-time power output P21 of photovoltaic, as P21=P2, is circulated next time by after the Δ t1 times；
As P21 ＜ P2, energy-storage system power output P22, the power not enough to make up photovoltaic generation, P22=P21-P2；As P21 ＞
During P2, energy-storage system absorbed power P22, to absorb photovoltaic generation surplus power, P22=P2-P21.
It is, when same layer source-storage coordinate responses strategy cannot meet response and require, to utilize that coordinate responses strategy is stored up-stored up to cross-layer
The energy-storage system authorized in last layer power network carries out demand response.It is specific as follows：
Coordinate responses strategy is stored up-stored up to cross-layer is dissolved in this layer of power network using the energy-storage system being authorized in last layer power network
Distributed power generation surplus, is conducive to improving the utilization level of energy-storage system.Need first to check energy storage in last layer power network before startup
Whether system possesses the resource or ability (both be authorized to but also with responding ability) for participating in response, and this layer of problem be just in principle
Ground is solved, and is assisted to solve by last layer beyond this layer of resolution ability, problem priority and resource occupation is related to during solution, when upper one
Layer power network energy storage resource is occupied or during inadequate ability, it is necessary to start other response policies.
Cross-layer store up-store up coordinate responses strategy by coordinating last layer power network in energy-storage system come this layer of distributed power generation of dissolving
Surplus, refer to this layer of power network can not dissolve distributed power generation when, it is necessary in coordinating last layer power network be authorized to energy-storage system coordinate
Dissolve, coordinate to meet the access of Thief zone distributed power source by two-layer energy storage.Be illustrated in figure 4 cross-layer store up-store up topology diagram.
Can not dissolve distributed photovoltaic power generation when 380V layers, and when causing 10kV layers of power distribution network to convey power to power transmission network, i.e. P1 is timing,
The concentration energy-storage system 380V layers of distributed energy storage of cooperation for coordinating to be authorized in 10kV layer is dissolved surplus photovoltaic, 380V layers and 10kV
Layer it is active is exchanged for P6, idle is Q6, when P6 for timing be 380V layer to 10kV layer provide power support when, do not consider be lost because
Element, then meet formula 2, formula 3.
P6=P15+P12+P13 (2)
Q6=Q15+Q12+Q13 (3)
10kV layers is exchanged for P1 with the active of power transmission network, and idle is Q1, when P1 is conveyed for timing is 10kV layers to power transmission network
During electric energy, loss factor is not considered, then meet formula 4, formula 5.
P1=P7+P6+P5 (4)
Q1=Q7+Q6+Q5 (5)
As shown in figure 5, when having to 10kV layers and being sent on power for 380V layers, i.e. P6 ＞ 0,10kV layers of detection is exchanged power transmission network
Power P 1, if P1≤0, i.e., send on no power, represents the power surplus sent on the automatic 380V layers of having dissolved of 10kV layers of load, nothing
10kV layers of authorized concentration energy-storage system need to be coordinated carry out response to dissolve；If P1 ＞ 0, i.e. 10kV layer conveys work(to power transmission network
Rate, then it represents that 380V layers of surplus generates electricity expansions that will bypass the immediate leadership, and is filled by the concentration energy-storage system increase for coordinating authorized in 10kV layers
Electrical power reduces discharge power come 380V layers of surplus generating of dissolving, and meets response demand.
Source-storage-lotus coordinate responses strategy is divided into two kinds in the present invention, i.e., with layer source-storage-lotus coordinate responses strategy and cross-layer
Source-storage-lotus coordinate responses strategy.
With layer source-storage-lotus coordinate responses strategy generally：Storing up-store up coordinate responses strategy when cross-layer cannot meet demand sound
At once, demand response is carried out using the distributed power source in same layer power network, energy-storage system and load, it is specific as follows：
Store up-store up when coordinate responses strategy cannot meet demand response in cross-layer with layer source-storage-lotus coordinate responses strategy and open
With, using resource all in same layer, including the energy-storage system of distributed power source, capacity and power limited that power output can be limited
And the limited flexible load of responding ability, constraints is to maximize distributed power source of dissolving, ensure the situation that load is powered
Under meet demand response.
The demand response that can be used not only for solution storage-storage strategy with layer source-storage-lotus coordinate responses strategy cannot meet (divides
Cloth generating surplus is bypassed the immediate leadership the problem of falling power transmission), and can coordinate the last layer power network to carry out demand response, or for giving work(in reduction
Rate (increases grid power to use), or reduces grid power use (power is sent in increase), coordinates last layer power network to carry out stabilization
Control, operation plan response, peak load shifting, emergency use etc..
There are two kinds of application scenarios with layer source-storage-lotus coordinate responses strategy, be 380V exchanges layer and 10kV as shown in Fig. 6-a
Layer, by transformer connection figure, is that 700V direct current distributions layer is connected with 10kV layers by converter as shown in Fig. 6-b, converter
It is more flexibly controllable with respect to transformer, or send power (increasing grid power to use), or reduction grid power to use and (increase in reduction
Plus sending power).
380V exchange layer exchanged with 10kV layer Power Exchange can by 380V exchange layer in distributed power generation, energy storage with
And the regulation and control of load three are controlled, and do not consider loss factor, formula 6, formula 7 are met.700V direct current distributions layer is by becoming
Parallel operation is connected with 10kV exchange layers, and 700V direct current distributions layer exchanges layer Power Exchange with 10kV and meet formula without idle control
8。
P6=P12+P13+P14 (6)
Q6=Q12+Q13+Q15 (7)
P3+Q3=P8+P9+P10 (8)
Target direction is represented using Boolean type variables D IRFlag, TRUE is represented and sent target (i.e. DIRFlag=1),
FALSE is represented and is used target (i.e. DIRFlag=0)；Represented with numerical variable P6_GOAL and layer Power Exchange target is exchanged with 10kV
Value, positive number to be represented and convey power target value, negative number representation consumption grid power desired value to power network；If sending power or increasing on reducing
Power-up net uses power, DIRFlag to be entered as 1；If reducing using sending power, DIRFlag to be entered as 0, P6_ on power or increase
GOAL is entered as this layer of power network and is disclosed with last layer power network to exchange desired value, i.e. 380V layers with the 10kV layers of target of Power Exchange
Value.
As shown in fig. 7, by taking 380V exchange distributions with 10kV power networks as an example, being needed first to DIRFlag and P6_ with layer strategy
GOAL assignment, 380V layers of detection exchanges P6 with 10kV layers of realtime power.
If DIRFlag is TRUE, it is desirable to reduce above send or increase power network and use power to desired value P6_GOAL, judge P6
With the size of P6_GOAL.As P6-P6_GOAL ＜ 0, represent that sending power to be less than in real time above send desired value or in real time using work(
Rate is more than desired value, without being adjusted, Δ t1 time Posterior circles.Otherwise, it is desirable to reduce above send power or increase to use power
Δ P (Δ P=| P6-P6_GOAL |, be scalar).That is, when realtime power exchanges P6 and is more than desired value P6_GOAL, needing
Reduce and send or increase power network and use power, specific strategy is as follows：
Check that can 380V power networks layer flexible load put into electric power Δ P, the soft of Δ P is put into if requirement is met
Property load, the response time delay Δ t2 time Posterior circles according to flexible load, otherwise continuing checking for this layer of energy storage can increase
Discharge power Δ P is charged or reduces, this layer of energy storage increases and charge or reduce discharge power Δ P if requirement is met, according to energy storage
Response time delay Δ t3 time Posterior circles；If being still unsatisfactory for requiring, check that can this layer of distributed power generation reduce generated output
Δ P, reduces this layer of photovoltaic generation power Δ P, after the distributed power generation response time delay Δ t4 times if requirement is met
Circulation, represents that same layer source-storage-lotus coordinate responses strategy can not meet demand response if being unsatisfactory for requiring, is alerted and is moved back
Go out same layer source-storage-lotus coordinate responses control.
If DIRFlag is FALSE, it is desirable to reduce power network is used or send power to desired value P6_GOAL on increasing, and judges P6
With the size of P6_GOAL.As P6_GOAL-P6 ＜ 0, represent in real time using power less than desired value or it is real-time on send power big
In desired value, without being adjusted, Δ t1 time Posterior circles.Otherwise, it is desirable to reduce using sending power Δ P on power or increase
(Δ P=| P6_GOAL-P6 |).That is, when realtime power exchanges P6 and is less than desired value P6_GOAL, it is desirable to reduce power network
Using or increase on send power, specific strategy is as follows：
Check that can 380V AC networks distributed power generation increase generated output Δ P, this layer of photovoltaic is increased if requirement is met
Generated output Δ P, according to distributed power generation response time delay Δ t4 time Posterior circles, can otherwise continue checking for this layer of energy storage
Reduce and charge or increase discharge power Δ P, this layer of energy storage is reduced and charge or increase discharge power Δ P if requirement is met, according to
Energy storage response time delay Δ t3 time Posterior circles；If being still unsatisfactory for requiring, check that can this layer of flexible load be reduced and use electric work
Rate Δ P, the reduction Δ P flexible loads if requirement is met, the response time delay Δ t2 time Posterior circles according to flexible load, if
Still it is unsatisfactory for requiring then to represent that same layer source-storage-lotus coordinate responses strategy can not meet demand response, carries out alarm and remind and exit
Controlled with layer source-storage-lotus coordinate responses.
Cross-layer source-storage-lotus coordinate responses strategy is generally：If demand can not be met with layer source-storage-lotus coordinate responses strategy
Start during response, i.e., solve this layer of power network demand using the distributed power source in last layer power network, energy-storage system and flexible load,
It is specific as follows：
Cross-layer source-storage-lotus coordinate responses strategy is used to that with layer source-storage-lotus coordinate responses strategy response demand can not to be met
Shi Qidong, after enabling also need to ensure power distribution network stable operation on the basis of, according to maximization dissolve distributed power generation, load supply
Electricity and the priority of energy storage economical operation optimize control.
Cross-layer source-storage-lotus coordinate responses strategy is negative by coordinating distributed power source, energy storage and the flexibility of last layer power network
Lotus is responded, and control flow is similar to same layer source-storage-lotus coordinate responses strategy, is a difference in that by adjusting this layer of money originally
Source becomes the resource of adjustment last layer, i.e., solve this layer of problem using last layer power network resources.
Cross-layer source-lotus-storage wiring schematic diagram is illustrated in figure 8, cross-layer source-lotus-storage response policy stores up-storage similar to cross-layer
Coordinate responses strategy, that is, need 10kV layers of coordination to solve 380V layers and call indeterminable operation demand.
It is illustrated in figure 9 shown in cross-layer source-storage-lotus coordinate responses demand modeling flow, control flow and the-storage-of same layer source
Lotus coordinate responses demand modeling flow is similar, and the resource of 10kV layers of adjustment, tool are simply become by adjusting 380V layers of resource originally
Body is as follows：
If DIRFlag is TRUE, it is desirable to reduce above send or increase power network and use power to desired value P6_GOAL, judge P6
With the size of P6_GOAL.As P6-P6_GOAL ＜ 0, represent that sending power to be less than in real time above send desired value or in real time using work(
Rate is more than desired value, without being adjusted, Δ t1 time Posterior circles.Otherwise, it is desirable to reduce above send power or increase to use power
Δ P (Δ P=| P6-P6_GOAL |).That is, when realtime power exchanges P6 and is more than desired value P6_GOAL, it is desirable to reduce
On send or increase power network and use power, specific strategy is as follows：
Check that can 10kV power networks layer flexible load put into electric power Δ P, the soft of Δ P is put into if requirement is met
Property load, the response time delay Δ t2 time Posterior circles according to flexible load, otherwise continuing checking for 10kV layers of energy storage can increase
Plus charge or reduction discharge power Δ P, 10kV layers of energy storage increases and charges or reduction discharge power Δ P if requirement is met, according to
Energy storage response time delay Δ t3 time Posterior circles；If being still unsatisfactory for requiring, check that can 10kV layers of distributed power generation reduce hair
Electrical power Δ P, reduces 10kV layers of photovoltaic generation power Δ P, according to distributed power generation response time delay Δ if requirement is met
T4 time Posterior circles, represent that cross-layer source-storage-lotus coordinate responses strategy can not meet demand response if being unsatisfactory for requiring, carry out
Alert and exit.
If DIRFlag is FALSE, it is desirable to reduce power network is used or send power to desired value P6_GOAL on increasing, and judges P6
With the size of P6_GOAL.As P6_GOAL-P6 ＜ 0, represent in real time using power less than desired value or it is real-time on send power big
In desired value, without being adjusted, Δ t1 time Posterior circles.Otherwise, it is desirable to reduce using sending power Δ P on power or increase
(Δ P=| P6_GOAL-P6 |).That is, when realtime power exchanges P6 and is less than desired value P6_GOAL, it is desirable to reduce power network
Using or increase on send power, specific strategy is as follows：
Check that can 10kV layers of distributed power generation increase generated output Δ P, 10kV layers of photovoltaic hair is increased if requirement is met
Electrical power Δ P, according to distributed power generation response time delay Δ t4 time Posterior circles, can otherwise continue checking for 10kV layers of energy storage
Reduce and charge or increase discharge power Δ P, 10kV layers of energy storage is reduced and charge or increase discharge power Δ P, root if requirement is met
According to energy storage response time delay Δ t3 time Posterior circles；If being still unsatisfactory for requiring, check that can 10kV layers of flexible load reduce use
Electrical power Δ P, reduces Δ P flexible loads if requirement is met, and is followed after the response time delay Δ t2 times according to flexible load
Ring, represents that cross-layer source-storage-lotus coordinate responses strategy can not meet demand response if being still unsatisfactory for requiring, carries out alarm prompting
And exit.
Need to all ensure with two kinds of strategies of layer source-storage-lotus coordinate responses strategy and cross-layer source-storage-lotus coordinate responses strategy
On the basis of power distribution network stable operation, according to maximize dissolve distributed power generation, load power and energy storage economical operation it is excellent
First level carries out optimal control.
In addition, each time delay in above-mentioned each strategy, such as the Δ t1 times, set all in accordance with being actually needed, and
And, the time of the utilization identical sign mark existed under Different Strategies, such as：With layer source-storage-lotus coordinate responses strategy and
The Δ t1 times are there is in cross-layer source-storage-lotus coordinate responses strategy, although mark is identical, but, different is tactful corresponding
Time length is orthogonal, and these times carry out respective settings all in accordance with actual requirement.
Specific embodiment is presented above, but the present invention is not limited to described implementation method.Base of the invention
This thinking is demand response control method, it is not limited to its application scenario, on the basis of it can implement the control method,
Any power system is within protection scope of the present invention.
Claims (5)
1. it is a kind of based on the active distribution network demand response control method for being layered energy storage, it is characterised in that including four control plans
Slightly, be respectively same layer source-storage coordinate responses strategy, cross-layer store up-store up coordinate responses strategy, with layer source-storage-lotus coordinate responses strategy
With cross-layer source-storage-lotus coordinate responses strategy,
The same layer source-storage coordinate responses strategy is：Entered using the distributed power source and energy-storage system that are connected to same layer power network
Row demand response；
Coordinate responses strategy is stored up-stored up to the cross-layer：When the same layer source-storage coordinate responses strategy cannot meet demand response
When, carry out demand response using the corresponding energy-storage system in last layer power network；
The same layer source-storage-lotus coordinate responses strategy is：Storing up-store up coordinate responses strategy when the cross-layer cannot meet demand sound
At once, response is coordinated using the distributed power source in same layer power network, energy-storage system and load；
Cross-layer source-storage-lotus coordinate responses the strategy is：When the same layer source-storage-lotus coordinate responses strategy cannot meet demand
During response, response is coordinated using the distributed power source in last layer power network, energy-storage system and load.
2. according to claim 1 based on the active distribution network demand response control method for being layered energy storage, it is characterised in that
In the same layer source-storage coordinate responses strategy, when distributed power source output power is more than setting power, energy-storage system absorbs many
In the dump power of setting power；When distributed power source output power is less than the setting power, energy-storage system provides corresponding
Power shortage, distributed power source output power and energy-storage system power output sum is equal to the setting power.
3. according to claim 1 based on the active distribution network demand response control method for being layered energy storage, it is characterised in that
When the same layer source-storage coordinate responses strategy cannot meet demand response, coordinate the energy-storage system in last layer power network, control
Energy-storage system increase charge power or reduction discharge power in last layer power network are responded.
4. according to claim 1 based on the active distribution network demand response control method for being layered energy storage, it is characterised in that
In the same layer source-storage-lotus coordinate responses strategy,
When this layer of power network needs to increase power consumption or reduce the power of upper layer power network conveying, can judgement by throwing
Enter the load in this layer of power network to meet response requirement, if it is not, can judgement by the energy-storage system in this layer of power network
Increase charge power or reduce discharge power and require meeting response, if it is not, in judging to reduce this layer of power network
The power output of distributed power source require meeting response, if it is not, judging the same layer source-storage-lotus coordinate responses
Strategy cannot meet response and require；
When this layer of power network needs to reduce power consumption or increase the power of upper layer power network conveying, can judgement by increasing
Plus the power output of the distributed power source in this layer of power network is required to meet to respond, if it is not, can judgement by this layer
Energy-storage system in power network reduces charge power or increase discharge power to meet response requirement, if it is not, judging energy
It is no that response requirement is met by exiting the load in this layer of power network, if it is not, judging that the same layer source-storage-lotus is coordinated
Response policy cannot meet response and require.
5. according to claim 1 based on the active distribution network demand response control method for being layered energy storage, it is characterised in that
In the cross-layer source-storage-lotus coordinate responses strategy,
When this layer of power network needs to increase power consumption or reduce the power of upper layer power network conveying, can judgement by throwing
Enter the load in last layer power network to meet response requirement, if it is not, can judgement by the energy storage in last layer power network
System increases charge power or reduction discharge power to meet response requirement, if it is not, can judgement reduce last layer
The power output of the distributed power source in power network is required to meet to respond, if it is not, judging the cross-layer source-storage-lotus association
Adjust response policy to meet response to require, send alarm signal；
When this layer of power network needs to reduce power consumption or increase the power of upper layer power network conveying, can judgement by increasing
Plus the power output of the distributed power source in last layer power network is required to meet to respond, if it is not, can judgement by upper
Energy-storage system in one layer of power network reduces charge power or increase discharge power to meet response requirement, if it is not, sentencing
It is disconnected that response requirement can be met by exiting the load in last layer power network, if it is not, judging the cross-layer source-storage-
Lotus coordinate responses strategy cannot meet response and require, send alarm signal.
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