CN103715694A - Voltage safety and stability self-adaption emergency control method based on synchronous measurement information - Google Patents

Abstract

The invention disclose a voltage safety and stability self-adaption emergency control method based on synchronous measurement information, and belongs to the field of electric power system operation and control. Based on synchronous measurement data of busbar voltage and branch flow converged in real time, the method establishes an equation reflecting correlation between the variable quantity of the busbar voltage and the load active and reactive variable quantities of each busbar, adopts an optimization method to carry out simultaneous resolution of an equation set reflecting the incidence relation of a plurality of operating points of an operating trajectory in actual measurement, obtains the sensitivity of injection of active and reactive power to each busbar to busbar voltage, considers the priority and the price of load control, and in controlled reactive equipment switching and load control measure space, searches reactive equipment switching and load control measures that satisfy voltage safety and stability requirements of each busbar with the lowest control price. The voltage safety and stability self-adaption emergency control method based on the synchronous measurement information can realize coordination and optimization of emergency control while preventing voltage from losing safety and stability.

Description

Voltage security based on synchro measure information is stablized self adaptation emergency control method

Technical field

The invention belongs to operation and control of electric power system field, the present invention relates to more precisely a kind of voltage security based on synchro measure information and stablize self adaptation emergency control method.

Background technology

Remote conveying, the load center voltage support scarce capacity of extensive electric power makes stable the becoming of voltage security in operation and control of electric power system, need one of problem of emphasis solution.Existing voltage security is stablized emergency control technology and is comprised two classes, and a class is the emergency control based on pre-establishing control strategy table, for example Local Safety and Stability Control System; This class technology real-time and control precision are higher, but no matter be to control by off-line Policy Table, or by strategy of on-line table, control, be all difficult to avoid excessive the crossing control problem and owing control problem of bringing of difference because of the operational mode for analyzing and actual motion state, reliability is not high.Another kind of is emergency control based on measuring on the spot real time information, for example low pressure off-load; Such engineering reliability and real-time are higher, but owing to only having amount on the spot, its control precision is difficult to guarantee.

Summary of the invention

The object of the invention is: in order comprehensively to improve the reliability that voltage security is stablized emergency control, real-time and precision, the present invention proposes only busbar voltage and the Branch Power Flow synchro measure data of the load center transformer station based on collecting in real time, do not rely on the operational mode of other plant stand of electric power system, do not rely on electric power system model and parameter, directly set up that reflection busbar voltage variable quantity is gained merit with each bus load and idle work variable quantity between tie-in equation, according to each bus load is meritorious and idle, the sensitivity of busbar voltage is changed to little characteristic at short notice, adopt the reflection of optimization method simultaneous solution to survey the equation group of incidence relation between a plurality of operating points of running orbit, obtaining each bus load gains merit and the idle sensitivity to busbar voltage, again based on sensitivity, consideration can control means and priority and cost, and the voltage security stability requirement of each bus, realization prevents that voltage from losing the coordination optimization emergency control of safety and stability.。

Specifically, the present invention adopts following technical scheme to realize, and comprises the following steps:

1) the voltage security stability monitoring equipment collecting based on synchro measure is concentrated voltage and the Branch Power Flow information of all buses, and presses the samples storage cycle T of setting ₀store these information, obtain comprising up-to-date synchro measure t constantly ₀information, in interior actual measurement historical information, enters step 2);

2) if the t collecting ₀voltage security stability monitoring equipment is constantly concentrated the voltage of all buses to be all more than or equal to respectively the voltage-controlled calculating of respective bus bars to start threshold value or wherein have at least the voltage of 1 bus to be less than or equal to the malfunction threshold value of respective bus bars voltage, return to step 1); If the t collecting ₀the emergency control that voltage security stability monitoring equipment constantly concentrates the voltage of all buses to be all more than or equal to respectively respective bus bars voltage starts threshold value and wherein has at least the voltage of 1 bus to be less than the voltage-controlled calculating startup of respective bus bars threshold value, enters step 3); If the t collecting ₀voltage security stability monitoring equipment constantly concentrates the voltage of all buses to be all greater than respectively the malfunction threshold value of respective bus bars voltage and the emergency control that wherein has at least the voltage of 1 bus to be less than respective bus bars voltage starts threshold value, the bus that voltage is less than to the emergency control startup threshold value of respective bus bars voltage filters out, form voltage bus collection to be controlled, enter step 8);

The calculating that described busbar voltage is controlled starts the emergency control startup threshold value that threshold value is greater than respective bus bars voltage, the emergency control of busbar voltage starts the safety and stability critical value that threshold value is greater than respective bus bars voltage, and the safety and stability critical value of busbar voltage is greater than the malfunction threshold value of respective bus bars voltage;

3) if the sensitivity calculations sampling period T of the corresponding time span T of actual measurement historical information collecting and setting _sratio be less than 4, return to step 1), otherwise by t ₀constantly as the 1st sampling instant point, with T _sactual measurement historical information is sampled, and making the 2nd sampling instant point is t ₀-T _sconstantly, the 3rd sampling instant point is t ₀-2T _sconstantly, the 4th sampling instant point is t ₀-3T _sconstantly, the 5th sampling instant point is t ₀-4T _sconstantly, enter step 4);

Wherein, T _sbe set to survey the samples storage cycle T of historical information ₀integral multiple;

4) busbar voltage of two sampling instant points based on adjacent and Branch Power Flow synchro measure information, the meritorious variable quantity of voltage variety, load, load and the total idle work variable quantity of reactive-load compensation equipment of setting up each bus between two sampling instant points of reflection and the injection of each bus are gained merit to the sensitivity of busbar voltage, are injected the idle tie-in equation group that the sensitivity of busbar voltage and electrical network other factors is caused to the variable quantity of busbar voltage, each bus is injected and gains merit to the sensitivity of busbar voltage and inject the idle sensitivity to busbar voltage, and at T _sthe variable quantity that in interior electrical network, other factors causes busbar voltage is as variable, and hypothesis is in the tie-in equation group of two different neighbouring sample moment point, these variablees are identical, adopt the tie-in equation group of relation between two adjacent sampling instant point running statuses of 4 reflections of optimization method simultaneous solution; If have optimal solution and be unique solution, the new explanation using optimal solution as corresponding variable, and by t ₀constantly as the associated moment t of new explanation _r, enter step 5), otherwise, step 5) entered;

5) meritorious to the sensitivity of busbar voltage and the idle sensitivity to busbar voltage of injection if each bus injects, and at T _sin interior electrical network, other factors causes that the solution of the variable quantity of busbar voltage has obtained and t ₀-t _rbe less than or equal to the sensitivity effective time of setting, by the t collecting ₀the bus that the decision-premaking that in all buses constantly, voltage is less than respective bus bars voltage is controlled threshold value filters out, form voltage decision-premaking control bus collection, situation for voltage decision-premaking control bus collection non-NULL, enter step 6), for voltage decision-premaking control bus collection, be empty situation, return to step 1);

Otherwise, return to step 1);

The decision-premaking of described busbar voltage is controlled the emergency control startup threshold value that threshold value is greater than respective bus bars voltage;

6) bus being injected to the meritorious bus that the sensitivity of busbar voltage is greater than to setting injects and meritorious the sensitivity threshold value of busbar voltage and controlled bus load is filtered out, form bus load control measure collection, bus is injected to bus that the idle sensitivity to busbar voltage is greater than setting to be injected and idle the sensitivity threshold value of busbar voltage and controlled bus load is filtered out, join bus load control measure collection, bus is injected to bus that the idle sensitivity to busbar voltage is greater than setting to be injected and idle the sensitivity threshold value of busbar voltage and resectable bus shunt reactor and the bus shunt capacitor that can drop into is filtered out, form bus reactive-load compensation equipment control measure collection, if bus load control measure collection non-NULL or bus reactive-load compensation equipment control measure collection non-NULL, enter step 7), otherwise, return to step 1),

Described controlled bus load refers to the controlled load branch circuit that is connected to this bus;

7) set up that to take the control Least-cost of cutting load be target function, consider the control priority of different cutting load measures, meritorious and idle in load transfer and cutting load measure is one, and load transfer, cutting load and throw moves back and to meet 01 integer programming model of constraints that emergency control that voltage decision-premaking control bus concentrates the increment of each busbar voltage to be more than or equal to respective bus bars voltage starts the difference of threshold value and its voltage security Critical Stability value after reactive-load compensation equipment, by solving 01 integer programming model, carry out the measure of calculating voltage safety and stability decision-premaking emergency control,

If can access optimal solution, using moving back reactive-load compensation equipment measure with the wherein corresponding load transfer measure of arbitrary optimal solution, cutting load measure with throwing, as up-to-date voltage security, stablize the measure of decision-premaking emergency control, and by voltage decision-premaking control bus collection and t ₀constantly as up-to-date voltage security, stablize the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and moment t _c, then return to step 1), otherwise return to step 1);

8) if up-to-date voltage security is stablized decision-premaking emergency control, measure has obtained and t ₀-t _cbe less than or equal to the effective time of the decision-premaking emergency control measure of setting, for up-to-date voltage security, stablize the situation of the common factor non-NULL of the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and voltage bus collection to be controlled, up-to-date voltage security is stablized to the measure of decision-premaking emergency control directly to be implemented, return to step 1), the voltage bus collection to be controlled of common factor stablize the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and to(for) up-to-date voltage security is the situation of empty set, returns to step 1); Otherwise, return to step 1).

Technique scheme is further characterized in that, in step 4), by equation group (1)-(4), represent since the 1st sampling instant point respectively, the voltage variety of each bus between 2 adjacent sampling instant points, the meritorious variable quantity of load, load and the total idle work variable quantity of reactive-load compensation equipment and each bus inject meritorious to the sensitivity of busbar voltage, inject the idle relation that the sensitivity of busbar voltage and electrical network other factors is caused to the variable quantity of busbar voltage, meritorious, idle all with inflow bus for just:

$\begin{array}{c}{v}_{0.i}-v_{1.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{0.j}-P_{1.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(1\right)$

$\begin{array}{c}{v}_{1.i}-v_{2.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{1.j}-P_{2.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(2\right)$

$\begin{array}{c}{v}_{2.i}-v_{3.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{2.j}-P_{3.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(3\right)$

$\begin{array}{c}{v}_{3.i}-v_{4.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{3.j}-P_{4.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(4\right)$

Wherein, n is the number of the synchro measure information median generatrix of voltage, m is the number of the synchro measure information median generatrix of load, M is the number of idle synchro measure information median generatrix, in solving equation group (1)-(4) before, need to, by the bus bar of all loads in synchro measure information above, not load, only have the bus bar of reactive-load compensation equipment in the back, v _0.i, v _1.i, v _2.i, v _3.iand v _4.ibe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate the voltage of i bus, λ _p.i.j, λ _q.i.jbeing respectively voltage security stability monitoring equipment concentrates the injection of j bus meritorious to the sensitivity of i busbar voltage and the idle sensitivity to i busbar voltage of injection, P _0.j, P _1.j, P _2.j, P _3.jand P _4.jbe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate load in j bus synchro measure information total meritorious, Q _0.j, Q _1.j, Q _2.j, Q _3.jand Q _4.jbe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate the always idle of load and reactive-load compensation equipment in j bus synchro measure information, Δ V _ifor causing voltage security stability monitoring equipment, other factors in electrical network concentrates the variable quantity of i busbar voltage;

By Optimization Method formula (5), calculate λ _p.i.j, λ _q.i.jwith Δ V _i:

$\begin{array}{c}\min {\left\{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\right\{(v_{0.i}-v_{1.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{0.j}-P_{1.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})\right]-\mathrm{\Δ}{V}_i\}}^2\\ {+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\{(v_{1.i}-v_{2.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{1.j}-P_{2.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.J})]-\mathrm{\Δ}{V}_i\}}^2\\ +\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\{(v_{2.i}-v_{3.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{2.j}-P_{3.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]-\mathrm{\Δ}{V}_i\}}^2\\ +\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\{(v_{3.i}-v_{4.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{3.j}-P_{4.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]-\mathrm{\Δ}{V}_i\}}^2\end{array}---\left(5\right).$

Technique scheme is further characterized in that, in step 7), by solving with formula (6), represent target function, with formula (7), represent 01 integer programming model of constraints, carry out the measure of calculating voltage safety and stability decision-premaking emergency control, meritorious, idle all to flow into bus for just:

$\min \left(\underset{r=1}{\overset{R}{\mathrm{\Σ}}}\underset{d=1}{\overset{D_r}{\mathrm{\Σ}}}(-P_{E.r.0.d}{C}_{r.0.d}{x}_{r.d})\right)---\left(6\right)$

$\left\{\begin{array}{c}\underset{r=1}{\overset{R}{\mathrm{\Σ}}}\underset{d=1}{\overset{D_r}{\mathrm{\Σ}}}\left[({\mathrm{\λ}}_{P.k.k_0}{P}_{E.r.0.d}+{\mathrm{\λ}}_{Q.k.k_0}{Q}_{E.r.0.d})x_{r.d}\right]\\ +\underset{l}{\overset{L}{\mathrm{\Σ}}}\left\{\right[({\mathrm{\λ}}_{P.k.k_1}-{\mathrm{\λ}}_{P.k.k_2})P_{F.0.l}+({\mathrm{\λ}}_{Q.k.k_1}-{\mathrm{\λ}}_{Q.k.k_2})Q_{F.0.l}\left]x_l\right\}\\ +\underset{a=1}{\overset{A}{\mathrm{\Σ}}}\left({\mathrm{\λ}}_{Q.k.k_3}{Q}_{G.0.a}{y}_a\right)-\underset{b=1}{\overset{B}{\mathrm{\Σ}}}\left({\mathrm{\λ}}_{Q.k.k_4}{Q}_{H.0.b}{z}_b\right)\≤v_{s.k}-v_{c.k}k=\mathrm{1,2},\·\·\·,K\\ x_{r+1.d}=0,x_{r.d}=0r=\mathrm{1,2},\·\·\·,R-1\\ x_{r+1.d}=1,x_{r.d}=0|1r=\mathrm{1,2},\·\·\·,R-1\\ x_l=0|1l=\mathrm{1,2},\·\·\·,L\\ y_a=0|1a=\mathrm{1,2},\·\·\·,A\\ z_b=0|1b=\mathrm{1,2},\·\·\·,B\end{array}\right.---\left(7\right)$

Wherein, R is the priority number that bus load control measure are concentrated excision load branch circuit, D _rfor what the concentrated priority of bus load control measure was r, can prop up way by cutting load, r is larger, and priority is higher, more preferentially excision, x _r.dvalue is 0 or 1, equals 0 expression and does not excise this load, equals 1 expression and excises this load, works as x _r+1.dequal at 0 o'clock, x _r.dcan only equal 0, work as x _r+1.dequal at 1 o'clock, x _r.dcan equal 0, also can equal 1, P _e.r.0.d, Q _e.r.0.dbe respectively t ₀constantly priority be r can cutting load branch road in d load branch circuit meritorious and idle, C _r.0.dfor t ₀the control cost of constantly excising d load branch circuit in the load branch circuit that priority is r, K is that voltage decision-premaking control bus is concentrated bus number, be respectively priority and be r can cutting load branch road in the voltage security stability monitoring equipment that connects of d load branch circuit concentrate k ₀meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus;

L is that concentrated can the turning of bus load control measure supplies load branch circuit number,

being respectively wherein individual can the turning for load branch circuit of l is turning for the concentrated k of front connected voltage security stability monitoring equipment ₁meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus,

being respectively wherein individual can the turning for load branch circuit of l is turning for the concentrated k of rear connected voltage security stability monitoring equipment ₂meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, P _f.0.l, Q _f.0.lbe respectively t ₀wherein individual can the turning of l supplies the meritorious and idle of load branch circuit, x constantly _lvalue is 0 or 1, equals 0 expression and does not turn for this load branch circuit, equals 1 expression and turns for this load branch circuit;

A is that bus reactive-load compensation equipment control measure concentrate resectable shunt reactor to prop up way,

for the voltage security stability monitoring equipment that wherein a shunt reactor connects is concentrated k ₃the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, Q _g.0.afor t ₀what constantly wherein a shunt reactor excised is idle, y _avalue is 0 or 1, equals 0 expression and does not excise this shunt reactor branch road, equals 1 expression and excises this shunt reactor branch road;

B is that bus reactive-load compensation equipment control measure concentrate the shunt capacitor that can drop into prop up way,

for the voltage security stability monitoring equipment that wherein b shunt capacitor connects is concentrated k ₄the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, Q _h.0.bfor t ₀idle after dropping into of b shunt capacitor wherein constantly, adopts the capacitive reactance of shunt capacitor input and connected bus at t ₀voltage constantly calculates, z _bvalue is 0 or 1, equals 0 expression and does not drop into this shunt capacitor branch road, equals 1 expression and drops into this shunt capacitor branch road;

V _s.k, v _c.kbe respectively t ₀voltage decision-premaking control bus concentrates the voltage security Critical Stability value of k bus and emergency control to start threshold value constantly.

Beneficial effect of the present invention is as follows: the present invention proposes the only busbar voltage based on collecting in real time and Branch Power Flow synchro measure data, do not rely on the operational mode of other plant stand of electric power system, do not rely on electric power system model and parameter, compare with adopting the technology that precalculated control strategy table carries out emergency control, improved the reliability that voltage security is stablized emergency control.By foundation, reflect the tie-in equation between the meritorious and idle work variable quantity of busbar voltage variable quantity and each bus load, according to each bus load is meritorious and idle, the sensitivity of busbar voltage is changed to little characteristic at short notice, adopt the reflection of optimization method simultaneous solution to survey the equation group of incidence relation between a plurality of operating points of running orbit, obtaining each bus load gains merit and the idle sensitivity to busbar voltage, consider priority and cost that load is controlled, in controlled reactive apparatus switching and load control measure space, search meets reactive apparatus switching and the load control measure that each busbar voltage safety and stability required and controlled Least-cost, compare with the technology based on amount is controlled on the spot, reduce voltage security and stablized the cost of emergency control, improved control precision.The present invention stablizes emergency control according to the busbar voltage detecting in real time lower than its voltage security and starts threshold value, again by after the adaptability of decision-premaking control measure is checked, electric power system is implemented to emergency control, realize preferably the balance between reliability and real-time.In a word, the present invention has improved the combination property that voltage security is stablized reliability, real-time and the precision of emergency control, can realize and prevents that voltage from losing the coordination optimization emergency control of safety and stability.

Accompanying drawing explanation

Fig. 1 is that the step 1 of the inventive method is to the flow chart of step 6.

Fig. 2 is that the step 7 of the inventive method is to the flow chart of step 8.

Embodiment

With reference to the accompanying drawings and in conjunction with example the present invention is described in further detail.

In Fig. 1, step 1 is described, and the voltage security stability monitoring equipment collecting based on synchro measure is concentrated voltage and the Branch Power Flow information of all buses, and presses the samples storage cycle T of setting ₀store these information, obtain comprising up-to-date synchro measure t constantly ₀information, in interior actual measurement historical information, enters step 2).The object of step 1) is for obtaining new synchro measure information, in order to following step, carries out control decision calculating.Wherein, T ₀can be set to 0.02s.

In Fig. 1, step 2 is described, if the t collecting ₀voltage security stability monitoring equipment is constantly concentrated the voltage of all buses to be all more than or equal to respectively the voltage-controlled calculating of respective bus bars to start threshold value or wherein have at least the voltage of 1 bus to be less than or equal to the malfunction threshold value (conventionally can be set to 0.6p.u) of respective bus bars voltage, return to step 1); If the t collecting ₀the emergency control that voltage security stability monitoring equipment constantly concentrates the voltage of all buses to be all more than or equal to respectively respective bus bars voltage starts threshold value and wherein has at least the voltage of 1 bus to be less than the voltage-controlled calculating startup of respective bus bars threshold value, enters step 3); If the t collecting ₀voltage security stability monitoring equipment constantly concentrates the voltage of all buses to be all greater than respectively the malfunction threshold value of respective bus bars voltage and the emergency control that wherein has at least the voltage of 1 bus to be less than respective bus bars voltage starts threshold value, the bus that voltage is less than to the emergency control startup threshold value of respective bus bars voltage filters out, form voltage bus collection to be controlled, enter step 8).

The calculating that described busbar voltage is controlled starts the emergency control startup threshold value that threshold value is greater than respective bus bars voltage, the emergency control of busbar voltage starts the safety and stability critical value that threshold value is greater than respective bus bars voltage, and the safety and stability critical value of busbar voltage is greater than the malfunction threshold value of respective bus bars voltage; The safety and stability critical value of each busbar voltage can be adjusted by off-line analysis, also can be by adjusting in line computation.Conventionally voltage security stability monitoring equipment concentrates the calculating startup threshold value that i busbar voltage controlled can be made as 1.09v _s.i(v wherein _s.isafety and stability critical value for concentrated i the busbar voltage of voltage security stability monitoring equipment), emergency control startup threshold value can be made as 1.04v _s.i, malfunction threshold value can be made as 0.5v _s.i.

In Fig. 1, step 3 is described, if the sensitivity calculations sampling period T of the corresponding time span T of actual measurement historical information collecting and setting _sratio be less than 4, return to step 1), otherwise, by t ₀constantly as the 1st sampling instant point, with T _sactual measurement historical information is sampled, and making the 2nd sampling instant point is t ₀-T _sconstantly, the 3rd sampling instant point is t ₀-2T _sconstantly, the 4th sampling instant point is t ₀-3T _sconstantly, the 5th sampling instant point is t ₀-4T _sconstantly, enter step 4).

Wherein, T _sbe set to survey the samples storage cycle T of historical information ₀integral multiple, conventionally can be by T _sbe set to 2T ₀;

What in Fig. 1, step 4 was described is, the busbar voltage of two sampling instant points based on adjacent and Branch Power Flow synchro measure information, set up the voltage variety of each bus between two sampling instant points of reflection, the meritorious variable quantity of load, load and the total idle work variable quantity of reactive-load compensation equipment and each bus inject the meritorious sensitivity to busbar voltage, inject the idle tie-in equation group that the sensitivity of busbar voltage and electrical network other factors is caused to the variable quantity of busbar voltage, each bus is injected meritorious to the sensitivity of busbar voltage and the idle sensitivity to busbar voltage of injection, and at T _sthe variable quantity that in interior electrical network, other factors causes busbar voltage is as variable, and hypothesis is in the tie-in equation group of two different neighbouring sample moment point, these variablees are identical, adopt the tie-in equation group of relation between two adjacent sampling instant point running statuses of 4 reflections of optimization method simultaneous solution, if have optimal solution and be unique solution, the new explanation using optimal solution as corresponding variable, and by t ₀constantly as the associated moment t of new explanation _r, enter step 5), otherwise, step 5) entered.

In step 4), by equation group (1)-(4), represent since the 1st sampling instant point respectively, the voltage variety of each bus between 2 adjacent sampling instant points, the meritorious variable quantity of load, load and the total idle work variable quantity of reactive-load compensation equipment and each bus inject meritorious to the sensitivity of busbar voltage, inject the idle relation that the sensitivity of busbar voltage and electrical network other factors is caused to the variable quantity of busbar voltage, meritorious, idle all with inflow bus for just:

$\begin{array}{c}{v}_{0.i}-v_{1.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{0.j}-P_{1.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(1\right)$

$\begin{array}{c}{v}_{1.i}-v_{2.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{1.j}-P_{2.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(2\right)$

$\begin{array}{c}{v}_{2.i}-v_{3.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{2.j}-P_{3.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(3\right)$

$\begin{array}{c}{v}_{3.i}-v_{4.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{3.j}-P_{4.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(4\right)$

Wherein, n is the number of the synchro measure information median generatrix of voltage, m is the number of the synchro measure information median generatrix of load, M is the number of idle synchro measure information median generatrix, in solving equation group (1)-(4) before, need to, by the bus bar of all loads in synchro measure information above, not load, only have the bus bar of reactive-load compensation equipment in the back, v _0.i, v _1.i, v _2.i, v _3.iand v _4.ibe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate the voltage of i bus, λ _p.i.j, λ _q.i.jbeing respectively voltage security stability monitoring equipment concentrates the injection of j bus meritorious to the sensitivity of i busbar voltage and the idle sensitivity to i busbar voltage of injection, P _0.j, P _1.j, P _2.j, P _3.jand P _4.jbe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate load in j bus synchro measure information total meritorious, Q _0.j, Q _1.j, Q _2.j, Q _3.jand Q _4.jbe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate the always idle of load and reactive-load compensation equipment in j bus synchro measure information, Δ V _ifor causing voltage security stability monitoring equipment, other factors in electrical network concentrates the variable quantity of i busbar voltage.

By Optimization Method formula (5), calculate λ _p.i.j(wherein, i=1,2 ..., n; J=1,2 ..., m), λ _q.i.j(wherein, i=1,2 ..., n; J=1,2 ..., M) with Δ V _i(wherein, i=1,2 ..., n).

$\begin{array}{c}\min {\left\{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\right\{(v_{0.i}-v_{1.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{0.j}-P_{1.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})\right]-\mathrm{\Δ}{V}_i\}}^2\\ {+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\{(v_{1.i}-v_{2.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{1.j}-P_{2.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.J})]-\mathrm{\Δ}{V}_i\}}^2\\ +\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\{(v_{2.i}-v_{3.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{2.j}-P_{3.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]-\mathrm{\Δ}{V}_i\}}^2\\ +\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\{(v_{3.i}-v_{4.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{3.j}-P_{4.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]-\mathrm{\Δ}{V}_i\}}^2\end{array}---\left(5\right).$

In Fig. 1, step 5 is described, meritorious to the sensitivity of busbar voltage and the idle sensitivity to busbar voltage of injection if each bus injects, and at T _sin interior electrical network, other factors causes that the solution of the variable quantity of busbar voltage has obtained and t ₀-t _rbe less than or equal to the sensitivity effective time (conventionally can be made as 0.3s) of setting, by the t collecting ₀the bus that the decision-premaking that in all buses constantly, voltage is less than respective bus bars voltage is controlled threshold value filters out, form voltage decision-premaking control bus collection, situation for voltage decision-premaking control bus collection non-NULL, enter step 6), for voltage decision-premaking control bus collection, be empty situation, return to step 1); Otherwise, return to step 1).

The decision-premaking of described busbar voltage is controlled the emergency control startup threshold value that threshold value is greater than respective bus bars voltage, and voltage security stability monitoring equipment is concentrated the decision-premaking of i busbar voltage to control threshold value and can be made as 1.06v conventionally _s.i(v wherein _s.isafety and stability critical value for concentrated i the busbar voltage of voltage security stability monitoring equipment).

What in Fig. 1, step 6 was described is, bus is injected to the meritorious bus that the sensitivity of busbar voltage is greater than to setting to be injected and meritorious the sensitivity threshold value of busbar voltage and controlled bus load is filtered out, form bus load control measure collection, bus is injected to bus that the idle sensitivity to busbar voltage is greater than setting to be injected and idle the sensitivity threshold value of busbar voltage and controlled bus load is filtered out, join bus load control measure collection, bus is injected to bus that the idle sensitivity to busbar voltage is greater than setting to be injected and idle the sensitivity threshold value of busbar voltage and resectable bus shunt reactor and the bus shunt capacitor that can drop into is filtered out, form bus reactive-load compensation equipment control measure collection, if bus load control measure collection non-NULL or bus reactive-load compensation equipment control measure collection non-NULL, enter step 7), otherwise, return to step 1).

Described controlled bus load refers to the controlled load branch circuit that is connected to this bus.

What in Fig. 1, step 7 was described is, it is target function that the control Least-cost of cutting load is take in foundation, consider the control priority of different cutting load measures, meritorious and idle in load transfer and cutting load measure is one, and load transfer, cutting load and throw moves back and to meet 01 integer programming model of constraints that emergency control that voltage decision-premaking control bus concentrates the increment of each busbar voltage to be more than or equal to respective bus bars voltage starts the difference of threshold value and its voltage security Critical Stability value after reactive-load compensation equipment, by solving 01 integer programming model, carry out the measure of calculating voltage safety and stability decision-premaking emergency control, if can access optimal solution, will with the wherein corresponding load transfer measure of arbitrary optimal solution, cutting load measure is moved back reactive-load compensation equipment measure with throwing and is stablized the measure of decision-premaking emergency control as up-to-date voltage security, and by voltage decision-premaking control bus collection and t ₀constantly as up-to-date voltage security, stablize the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and moment t _c, return to step 1), otherwise, step 1) returned to.

In step 7), by solving with formula (6), represent target function, with formula (7), represent 01 integer programming model of constraints, carry out the measure of calculating voltage safety and stability decision-premaking emergency control, meritorious, idle all to flow into bus for just:

$\min \left(\underset{r=1}{\overset{R}{\mathrm{\Σ}}}\underset{d=1}{\overset{D_r}{\mathrm{\Σ}}}(-P_{E.r.0.d}{C}_{r.0.d}{x}_{r.d})\right)---\left(6\right)$

$\left\{\begin{array}{c}\underset{r=1}{\overset{R}{\mathrm{\Σ}}}\underset{d=1}{\overset{D_r}{\mathrm{\Σ}}}\left[({\mathrm{\λ}}_{P.k.k_0}{P}_{E.r.0.d}+{\mathrm{\λ}}_{Q.k.k_0}{Q}_{E.r.0.d})x_{r.d}\right]\\ +\underset{l}{\overset{L}{\mathrm{\Σ}}}\left\{\right[({\mathrm{\λ}}_{P.k.k_1}-{\mathrm{\λ}}_{P.k.k_2})P_{F.0.l}+({\mathrm{\λ}}_{Q.k.k_1}-{\mathrm{\λ}}_{Q.k.k_2})Q_{F.0.l}\left]x_l\right\}\\ +\underset{a=1}{\overset{A}{\mathrm{\Σ}}}\left({\mathrm{\λ}}_{Q.k.k_3}{Q}_{G.0.a}{y}_a\right)-\underset{b=1}{\overset{B}{\mathrm{\Σ}}}\left({\mathrm{\λ}}_{Q.k.k_4}{Q}_{H.0.b}{z}_b\right)\≤v_{s.k}-v_{c.k}k=\mathrm{1,2},\·\·\·,K\\ x_{r+1.d}=0,x_{r.d}=0r=\mathrm{1,2},\·\·\·,R-1\\ x_{r+1.d}=1,x_{r.d}=0|1r=\mathrm{1,2},\·\·\·,R-1\\ x_l=0|1l=\mathrm{1,2},\·\·\·,L\\ y_a=0|1a=\mathrm{1,2},\·\·\·,A\\ z_b=0|1b=\mathrm{1,2},\·\·\·,B\end{array}\right.---\left(7\right)$

Wherein, R is the priority number that bus load control measure are concentrated excision load branch circuit, D _rfor what the concentrated priority of bus load control measure was r, can prop up way by cutting load, r is larger, and priority is higher, more preferentially excision, x _r.dvalue is 0 or 1, equals 0 expression and does not excise this load, equals 1 expression and excises this load, works as x _r+1.dequal at 0 o'clock, x _r.dcan only equal 0, work as x _r+1.dequal at 1 o'clock, x _r.dcan equal 0, also can equal 1, P _e.r.0.d, Q _e.r.0.dbe respectively t ₀constantly priority be r can cutting load branch road in d load branch circuit meritorious and idle, C _r.0.dfor t ₀the control cost of constantly excising d load branch circuit in the load branch circuit that priority is r, K is that voltage decision-premaking control bus is concentrated bus number, be respectively priority and be r can cutting load branch road in the voltage security stability monitoring equipment that connects of d load branch circuit concentrate k ₀meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus;

L is that concentrated can the turning of bus load control measure supplies load branch circuit number,

being respectively wherein individual can the turning for load branch circuit of l is turning for the concentrated k of front connected voltage security stability monitoring equipment ₁meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus,

being respectively wherein individual can the turning for load branch circuit of l is turning for the concentrated k of rear connected voltage security stability monitoring equipment ₂meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, P _f.0.l, Q _f.0.lbe respectively t ₀wherein individual can the turning of l supplies the meritorious and idle of load branch circuit, x constantly _lvalue is 0 or 1, equals 0 expression and does not turn for this load branch circuit, equals 1 expression and turns for this load branch circuit;

A is that bus reactive-load compensation equipment control measure concentrate resectable shunt reactor to prop up way, for the voltage security stability monitoring equipment that wherein a shunt reactor connects is concentrated k ₃the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, Q _g.0.afor t ₀what constantly wherein a shunt reactor excised is idle, y _avalue is 0 or 1, equals 0 expression and does not excise this shunt reactor branch road, equals 1 expression and excises this shunt reactor branch road;

B is that bus reactive-load compensation equipment control measure concentrate the shunt capacitor that can drop into prop up way,

for the voltage security stability monitoring equipment that wherein b shunt capacitor connects is concentrated k ₄the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, Q _h.0.bfor t ₀idle after dropping into of b shunt capacitor wherein constantly, adopts the capacitive reactance of shunt capacitor input and connected bus at t ₀voltage constantly calculates, z _bvalue is 0 or 1, equals 0 expression and does not drop into this shunt capacitor branch road, equals 1 expression and drops into this shunt capacitor branch road;

V _s.k, v _c.kbe respectively t ₀voltage decision-premaking control bus concentrates the voltage security Critical Stability value of k bus and emergency control to start threshold value constantly.

In Fig. 1, step 8 is described, if up-to-date voltage security is stablized decision-premaking emergency control, measure has obtained and t ₀-t _cbe less than or equal to the effective time (conventionally can be made as 0.3s) of the decision-premaking emergency control measure of setting, for up-to-date voltage security, stablize the situation of the common factor non-NULL of the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and voltage bus collection to be controlled, up-to-date voltage security is stablized to the measure of decision-premaking emergency control directly to be implemented, return to step 1), the voltage bus collection to be controlled of common factor stablize the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and to(for) up-to-date voltage security is the situation of empty set, returns to step 1); Otherwise, return to step 1).

Although the present invention with preferred embodiment openly as above, embodiment is not of the present invention for limiting.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection range.Therefore should to take the application's the content that claim was defined be standard to protection scope of the present invention.

Claims (3)

1. the voltage security based on synchro measure information is stablized self adaptation emergency control method, it is characterized in that:

1) the voltage security stability monitoring equipment collecting based on synchro measure is concentrated voltage and the Branch Power Flow information of all buses, and presses the samples storage cycle T of setting ₀store these information, obtain comprising up-to-date synchro measure t constantly ₀information, in interior actual measurement historical information, enters step 2);

2) if the t collecting ₀voltage security stability monitoring equipment is constantly concentrated the voltage of all buses to be all more than or equal to respectively the voltage-controlled calculating of respective bus bars to start threshold value or wherein have at least the voltage of 1 bus to be less than or equal to the malfunction threshold value of respective bus bars voltage, return to step 1); If the t collecting ₀the emergency control that voltage security stability monitoring equipment constantly concentrates the voltage of all buses to be all more than or equal to respectively respective bus bars voltage starts threshold value and wherein has at least the voltage of 1 bus to be less than the voltage-controlled calculating startup of respective bus bars threshold value, enters step 3); If the t collecting ₀voltage security stability monitoring equipment constantly concentrates the voltage of all buses to be all greater than respectively the malfunction threshold value of respective bus bars voltage and the emergency control that wherein has at least the voltage of 1 bus to be less than respective bus bars voltage starts threshold value, the bus that voltage is less than to the emergency control startup threshold value of respective bus bars voltage filters out, form voltage bus collection to be controlled, enter step 8);

The calculating that described busbar voltage is controlled starts the emergency control startup threshold value that threshold value is greater than respective bus bars voltage, the emergency control of busbar voltage starts the safety and stability critical value that threshold value is greater than respective bus bars voltage, and the safety and stability critical value of busbar voltage is greater than the malfunction threshold value of respective bus bars voltage;

3) if the sensitivity calculations sampling period T of the corresponding time span T of actual measurement historical information collecting and setting _sratio be less than 4, return to step 1), otherwise by t ₀constantly as the 1st sampling instant point, with T _sactual measurement historical information is sampled, and making the 2nd sampling instant point is t ₀-T _sconstantly, the 3rd sampling instant point is t ₀-2T _sconstantly, the 4th sampling instant point is t ₀-3T _sconstantly, the 5th sampling instant point is t ₀-4T _sconstantly, enter step 4);

Wherein, T _sbe set to survey the samples storage cycle T of historical information ₀integral multiple;

4) busbar voltage of two sampling instant points based on adjacent and Branch Power Flow synchro measure information, the meritorious variable quantity of voltage variety, load, load and the total idle work variable quantity of reactive-load compensation equipment of setting up each bus between two sampling instant points of reflection and the injection of each bus are gained merit to the sensitivity of busbar voltage, are injected the idle tie-in equation group that the sensitivity of busbar voltage and electrical network other factors is caused to the variable quantity of busbar voltage, each bus is injected and gains merit to the sensitivity of busbar voltage and inject the idle sensitivity to busbar voltage, and at T _sthe variable quantity that in interior electrical network, other factors causes busbar voltage is as variable, and hypothesis is in the tie-in equation group of two different neighbouring sample moment point, these variablees are identical, adopt the tie-in equation group of relation between two adjacent sampling instant point running statuses of 4 reflections of optimization method simultaneous solution; If have optimal solution and be unique solution, the new explanation using optimal solution as corresponding variable, and by t ₀constantly as the associated moment t of new explanation _r, enter step 5), otherwise, step 5) entered;

5) meritorious to the sensitivity of busbar voltage and the idle sensitivity to busbar voltage of injection if each bus injects, and at T _sin interior electrical network, other factors causes that the solution of the variable quantity of busbar voltage has obtained and t ₀-t _rbe less than or equal to the sensitivity effective time of setting, by the t collecting ₀the bus that the decision-premaking that in all buses constantly, voltage is less than respective bus bars voltage is controlled threshold value filters out, form voltage decision-premaking control bus collection, situation for voltage decision-premaking control bus collection non-NULL, enter step 6), for voltage decision-premaking control bus collection, be empty situation, return to step 1);

Otherwise, return to step 1);

The decision-premaking of described busbar voltage is controlled the emergency control startup threshold value that threshold value is greater than respective bus bars voltage;

6) bus being injected to the meritorious bus that the sensitivity of busbar voltage is greater than to setting injects and meritorious the sensitivity threshold value of busbar voltage and controlled bus load is filtered out, form bus load control measure collection, bus is injected to bus that the idle sensitivity to busbar voltage is greater than setting to be injected and idle the sensitivity threshold value of busbar voltage and controlled bus load is filtered out, join bus load control measure collection, bus is injected to bus that the idle sensitivity to busbar voltage is greater than setting to be injected and idle the sensitivity threshold value of busbar voltage and resectable bus shunt reactor and the bus shunt capacitor that can drop into is filtered out, form bus reactive-load compensation equipment control measure collection, if bus load control measure collection non-NULL or bus reactive-load compensation equipment control measure collection non-NULL, enter step 7), otherwise, return to step 1),

Described controlled bus load refers to the controlled load branch circuit that is connected to this bus;

7) set up that to take the control Least-cost of cutting load be target function, consider the control priority of different cutting load measures, meritorious and idle in load transfer and cutting load measure is one, and load transfer, cutting load and throw moves back and to meet 01 integer programming model of constraints that emergency control that voltage decision-premaking control bus concentrates the increment of each busbar voltage to be more than or equal to respective bus bars voltage starts the difference of threshold value and its voltage security Critical Stability value after reactive-load compensation equipment, by solving 01 integer programming model, carry out the measure of calculating voltage safety and stability decision-premaking emergency control,

If can access optimal solution, using moving back reactive-load compensation equipment measure with the wherein corresponding load transfer measure of arbitrary optimal solution, cutting load measure with throwing, as up-to-date voltage security, stablize the measure of decision-premaking emergency control, and by voltage decision-premaking control bus collection and t ₀constantly as up-to-date voltage security, stablize the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and moment t _c, then return to step 1), otherwise return to step 1);

8) if up-to-date voltage security is stablized decision-premaking emergency control, measure has obtained and t ₀-t _cbe less than or equal to the effective time of the decision-premaking emergency control measure of setting, for up-to-date voltage security, stablize the situation of the common factor non-NULL of the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and voltage bus collection to be controlled, up-to-date voltage security is stablized to the measure of decision-premaking emergency control directly to be implemented, return to step 1), the voltage bus collection to be controlled of common factor stablize the associated voltage decision-premaking control bus collection of decision-premaking emergency control measure and to(for) up-to-date voltage security is the situation of empty set, returns to step 1);

Otherwise, return to step 1).

2. the voltage security based on synchro measure information according to claim 1 is stablized self adaptation emergency control method, it is characterized in that, in step 4), by equation group (1)-(4), represent since the 1st sampling instant point respectively, the voltage variety of each bus between 2 adjacent sampling instant points, the meritorious variable quantity of load, load and the total idle work variable quantity of reactive-load compensation equipment and each bus inject the meritorious sensitivity to busbar voltage, inject the idle relation that the sensitivity of busbar voltage and electrical network other factors is caused to the variable quantity of busbar voltage, meritorious, idle all to flow into bus for just:

$\begin{array}{c}{v}_{0.i}-v_{1.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{0.j}-P_{1.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(1\right)$

$\begin{array}{c}{v}_{1.i}-v_{2.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{1.j}-P_{2.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(2\right)$

$\begin{array}{c}{v}_{2.i}-v_{3.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{2.j}-P_{3.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(3\right)$

$\begin{array}{c}{v}_{3.i}-v_{4.i}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{3.j}-P_{4.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]\\ +\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})\right]+\mathrm{\Δ}{V}_{i}i=\mathrm{1,2},\·\·\·,n\end{array}---\left(4\right)$

Wherein, n is the number of the synchro measure information median generatrix of voltage, m is the number of the synchro measure information median generatrix of load, M is the number of idle synchro measure information median generatrix, in solving equation group (1)-(4) before, need to, by the bus bar of all loads in synchro measure information above, not load, only have the bus bar of reactive-load compensation equipment in the back, v _0.i, v _1.i, v _2.i, v _3.iand v _4.ibe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate the voltage of i bus, λ _p.i.j, λ _q.i.jbeing respectively voltage security stability monitoring equipment concentrates the injection of j bus meritorious to the sensitivity of i busbar voltage and the idle sensitivity to i busbar voltage of injection, P _0.j, P _1.j, P _2.j, P _3.jand P _4.jbe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate load in j bus synchro measure information total meritorious, Q _0.j, Q _1.j, Q _2.j, Q _3.jand Q _4.jbe respectively the 1st to the 5th sampling instant point voltage monitoring safety and stability equipment and concentrate the always idle of load and reactive-load compensation equipment in j bus synchro measure information, Δ V _ifor causing voltage security stability monitoring equipment, other factors in electrical network concentrates the variable quantity of i busbar voltage;

By Optimization Method formula (5), calculate λ _p.i.j, λ _q.i.jwith Δ V _i:

$\begin{array}{c}\min {\left\{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\right\{(v_{0.i}-v_{1.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{0.j}-P_{1.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}\left[{\mathrm{\λ}}_{Q.i.j}(Q_{0.j}-Q_{1.j})\right]-\mathrm{\Δ}{V}_i\}}^2\\ {+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\{(v_{1.i}-v_{2.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{1.j}-P_{2.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{1.j}-Q_{2.J})]-\mathrm{\Δ}{V}_i\}}^2\\ +\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\{(v_{2.i}-v_{3.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{2.j}-P_{3.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{2.j}-Q_{3.j})]-\mathrm{\Δ}{V}_i\}}^2\\ +\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\{(v_{3.i}-v_{4.i})-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{P.i.j}(P_{3.j}-P_{4.j})+{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]-\underset{j=m+1}{\overset{M}{\mathrm{\Σ}}}[{\mathrm{\λ}}_{Q.i.j}(Q_{3.j}-Q_{4.j})]-\mathrm{\Δ}{V}_i\}}^2\end{array}---\left(5\right).$

3. the voltage security based on synchro measure information according to claim 1 is stablized self adaptation emergency control method, it is characterized in that, in step 7), by solving with formula (6), represent target function, with formula (7), represent 01 integer programming model of constraints, carry out the measure of calculating voltage safety and stability decision-premaking emergency control, meritorious, idle all to flow into bus for just:

$\min \left(\underset{r=1}{\overset{R}{\mathrm{\Σ}}}\underset{d=1}{\overset{D_r}{\mathrm{\Σ}}}(-P_{E.r.0.d}{C}_{r.0.d}{x}_{r.d})\right)---\left(6\right)$

$\left\{\begin{array}{c}\underset{r=1}{\overset{R}{\mathrm{\Σ}}}\underset{d=1}{\overset{D_r}{\mathrm{\Σ}}}\left[({\mathrm{\λ}}_{P.k.k_0}{P}_{E.r.0.d}+{\mathrm{\λ}}_{Q.k.k_0}{Q}_{E.r.0.d})x_{r.d}\right]\\ +\underset{l}{\overset{L}{\mathrm{\Σ}}}\left\{\right[({\mathrm{\λ}}_{P.k.k_1}-{\mathrm{\λ}}_{P.k.k_2})P_{F.0.l}+({\mathrm{\λ}}_{Q.k.k_1}-{\mathrm{\λ}}_{Q.k.k_2})Q_{F.0.l}\left]x_l\right\}\\ +\underset{a=1}{\overset{A}{\mathrm{\Σ}}}\left({\mathrm{\λ}}_{Q.k.k_3}{Q}_{G.0.a}{y}_a\right)-\underset{b=1}{\overset{B}{\mathrm{\Σ}}}\left({\mathrm{\λ}}_{Q.k.k_4}{Q}_{H.0.b}{z}_b\right)\≤v_{s.k}-v_{c.k}k=\mathrm{1,2},\·\·\·,K\\ x_{r+1.d}=0,x_{r.d}=0r=\mathrm{1,2},\·\·\·,R-1\\ x_{r+1.d}=1,x_{r.d}=0|1r=\mathrm{1,2},\·\·\·,R-1\\ x_l=0|1l=\mathrm{1,2},\·\·\·,L\\ y_a=0|1a=\mathrm{1,2},\·\·\·,A\\ z_b=0|1b=\mathrm{1,2},\·\·\·,B\end{array}\right.---\left(7\right)$

Wherein, R is the priority number that bus load control measure are concentrated excision load branch circuit, D _rfor what the concentrated priority of bus load control measure was r, can prop up way by cutting load, r is larger, and priority is higher, more preferentially excision, x _r.dvalue is 0 or 1, equals 0 expression and does not excise this load, equals 1 expression and excises this load, works as x _r+1.dequal at 0 o'clock, x _r.dcan only equal 0, work as x _r+1.dequal at 1 o'clock, x _r.dcan equal 0, also can equal 1, P _e.r.0.d, Q _e.r.0.dbe respectively t ₀constantly priority be r can cutting load branch road in d load branch circuit meritorious and idle, C _r.0.dfor t ₀the control cost of constantly excising d load branch circuit in the load branch circuit that priority is r, K is that voltage decision-premaking control bus is concentrated bus number, be respectively priority and be r can cutting load branch road in the voltage security stability monitoring equipment that connects of d load branch circuit concentrate k ₀meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus;

L is that concentrated can the turning of bus load control measure supplies load branch circuit number,

being respectively wherein individual can the turning for load branch circuit of l is turning for the concentrated k of front connected voltage security stability monitoring equipment ₁meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus,

being respectively wherein individual can the turning for load branch circuit of l is turning for the concentrated k of rear connected voltage security stability monitoring equipment ₂meritorious sensitivity and the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, P _f.0.l, Q _f.0.lbe respectively t ₀wherein individual can the turning of l supplies the meritorious and idle of load branch circuit, x constantly _lvalue is 0 or 1, equals 0 expression and does not turn for this load branch circuit, equals 1 expression and turns for this load branch circuit;

A is that bus reactive-load compensation equipment control measure concentrate resectable shunt reactor to prop up way,

for the voltage security stability monitoring equipment that wherein a shunt reactor connects is concentrated k ₃the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, Q _g.0.afor t ₀what constantly wherein a shunt reactor excised is idle, y _avalue is 0 or 1, equals 0 expression and does not excise this shunt reactor branch road, equals 1 expression and excises this shunt reactor branch road;

B is that bus reactive-load compensation equipment control measure concentrate the shunt capacitor that can drop into prop up way,

for the voltage security stability monitoring equipment that wherein b shunt capacitor connects is concentrated k ₄the idle sensitivity of voltage decision-premaking control bus being concentrated to k busbar voltage of injection of individual bus, Q _h.0.bfor t ₀idle after dropping into of b shunt capacitor wherein constantly, adopts the capacitive reactance of shunt capacitor input and connected bus at t ₀voltage constantly calculates, z _bvalue is 0 or 1, equals 0 expression and does not drop into this shunt capacitor branch road, equals 1 expression and drops into this shunt capacitor branch road;

V _s.k, v _c.kbe respectively t ₀voltage decision-premaking control bus concentrates the voltage security Critical Stability value of k bus and emergency control to start threshold value constantly.

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