CN113469411B - Power grid active coordination optimization control decision method and device considering adjustment dead zone - Google Patents

Power grid active coordination optimization control decision method and device considering adjustment dead zone Download PDF

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CN113469411B
CN113469411B CN202110576478.9A CN202110576478A CN113469411B CN 113469411 B CN113469411 B CN 113469411B CN 202110576478 A CN202110576478 A CN 202110576478A CN 113469411 B CN113469411 B CN 113469411B
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CN113469411A (en
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徐泰山
汪马翔
李渝
刘韶峰
常康
孙谊媊
常喜强
陈堂龙
王衡
张昊天
李吉晨
扈卫卫
温胜寒
王辉
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State Grid Corp of China SGCC
Nari Technology Co Ltd
State Grid Electric Power Research Institute
State Grid Xinjiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Nari Technology Co Ltd
State Grid Electric Power Research Institute
State Grid Xinjiang Electric Power Co Ltd
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Abstract

The invention discloses a power grid active coordination optimization control decision method and device considering an adjustment dead zone, which are used for calculating the active sensitivity of power grid active equipment to a safe and stable power transmission channel according to the power grid state, grouping the active equipment by combining the comprehensive performance indexes of the active equipment, determining the comprehensive performance indexes and the active sensitivity of equipment groups, considering the active adjustment dead zone of equipment in the groups, generating the active instruction upper limit/lower limit and the active adjustment dead zone of the equipment groups, taking the comprehensive performance optimization of active coordination optimization control among the equipment groups as a target, generating the active instruction of the equipment groups, and taking the comprehensive performance optimization of active coordination optimization control of equipment in the equipment groups as a target, generating the active instruction of the equipment in the equipment groups, thereby realizing the power grid active coordination optimization control considering the adjustment dead zone. The invention adopts a step-by-step optimization strategy of optimizing among groups and optimizing in groups, thereby not only reducing the scale of decision variables, improving the calculation speed, but also ensuring the calculation precision of instructions.

Description

Power grid active coordination optimization control decision method and device considering adjustment dead zone
Technical Field
The invention relates to a power grid active coordination optimization control decision method and device considering an adjustment dead zone, and belongs to the technical field of power grid dispatching operation and control.
Background
Along with the proposal of the targets of carbon neutralization and carbon peak, a large number of new energy sources replace the conventional units, the wide application of the interactive energy utilization equipment such as electric automobiles, distributed energy sources, energy storage and the like is promoted, the power grid presents the characteristics of high-proportion renewable energy sources and high-proportion power electronic equipment, and the power control of the power grid has higher requirements.
The adjustment dead zone is the operation constraint of control equipment such as a unit, an instruction smaller than the adjustment dead zone is not executed, the traditional AGC is controlled in the issuing link of the active instruction, the adjustment dead zone constraint is considered, if the adjustment quantity is smaller than the adjustment dead zone, the control instruction is not issued, and the control instruction is not executed. The large-scale new energy and the wide access of the interactive energy utilization equipment lead to the rapid increase of the quantity of the control equipment, and the large quantity of the control equipment is supposed to cause the control instruction not to be executed due to the dead zone adjustment, so that larger execution deviation is brought on the whole, on the one hand, the new energy consumption is influenced, and on the other hand, the safe and stable operation of the power grid is also influenced.
If the adjustment dead zone is considered in the calculation link of the active instruction, whether the recursive iteration of the traditional AGC heuristic method or the addition of the adjustment direction variable and the control dead zone constraint in the optimization algorithm cannot solve the problem that the calculation speed brought by the mass control equipment scale is difficult to meet the real-time control requirement.
In summary, the dead zone adjustment is considered in the power grid active coordination optimization control decision, the requirement of the calculation speed is difficult to meet in the prior art, the dead zone adjustment is not considered, a large number of control equipment instructions are possibly caused to be not executed, and further larger execution deviation is caused, so that potential safety hazards exist in the operation of the power grid.
Disclosure of Invention
In order to solve the problems, the invention provides a power grid active coordination optimization control decision method and device considering an adjustment dead zone, which adopts a step-by-step optimization strategy of inter-group optimization and intra-group optimization based on a mixed planning mathematical model introducing adjustment dead zone constraint, reduces the decision variable scale, improves the calculation speed, improves the execution rate of an active control instruction, and avoids the safety risk caused by the execution deviation of the active instruction due to adjustment dead zone constraint.
The technical scheme adopted by the invention is as follows:
The invention provides a power grid active coordination optimization control decision method considering an adjustment dead zone, which comprises the following steps:
optimizing and controlling the equipment t in the equipment set D according to the active coordination 0 Time-of-day comprehensive performance index sum t 1 The active power of active equipment of the power grid at any moment is used for grouping the equipment in the step D to obtain an equipment group;
calculating each equipment group t 0 Time-of-day comprehensive performance index, equipment set t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, and equipment group t 1 An active command upper limit/lower limit and an active adjustment dead zone at the moment;
according to the set t of devices 0 Time-of-day comprehensive performance index sum t 1 The active sensitivity of active equipment of the power grid to the safe and stable power transmission channel of the power grid at any moment and the active of the active equipment of the power grid except the equipment in D are calculated by taking the optimal comprehensive performance of active coordination optimization control among equipment groups as a target and taking the equipment group t into consideration 1 The upper limit/lower limit of the active command at moment, the active regulation dead zone constraint and the safe and reliable operation constraint of the power grid, an active coordination optimization decision model among equipment groups is established, and optimization is carried outSolving to obtain a device group t 1 An active command of time;
According to the set t of devices 1 All devices t in active instruction computing device group at moment 1 Active command of moment.
Further, the t 1 The active sensitivity of the active power equipment of the power grid to the safe and stable power transmission channel of the power grid at the moment is calculated as follows:
if relative to t 0 Time t 1 If the topology structure of the power grid is unchanged at the moment, aiming at t 0 The method comprises the steps of calculating active sensitivity of active power equipment of a power grid to a safe and stable power transmission channel of the power grid by adopting a tide calculation method according to running state data of the power grid at moment, and taking the active sensitivity as t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, otherwise, t is calculated according to topological structure variation of power grid 0 Correspondingly adjusting the running state data of the power grid at moment, and calculating the active sensitivity of the active power of the power grid active equipment to the safe and stable power transmission channel of the power grid by adopting a power flow calculation method as t aiming at the adjusted running state data of the power grid 1 The active sensitivity of the active equipment of the power grid to the safe and stable power transmission channel of the power grid at any moment.
Further, the grouping the devices in the step D to obtain a device group includes:
establishing an optimization model taking the minimum equipment group number as an optimization target and considering the following constraint conditions, and obtaining equipment groups through optimization solution calculation;
The constraint conditions are as follows:
a. any two devices t in the device group 0 The difference between the up-regulation comprehensive performance indexes at the moment is smaller than the comprehensive performance index difference threshold value;
b. any two devices t in the device group 0 The difference between the time-down comprehensive performance indexes is smaller than the comprehensive performance index difference threshold value;
c. for each safe and stable power transmission channel in a power grid, any two devices t in a device group 1 The difference between the active power of moment and the active sensitivity of the safe and stable power transmission channel of the power grid is smallA threshold value of difference in active sensitivity;
the overall performance indicators of the device include an up-regulation overall performance indicator, which means that the device is at (t) 1 -t 0 ) The device up-regulates the gain increment of unit active power in time, and the down-regulating comprehensive performance index refers to the value obtained in the process (t 1 -t 0 ) The device downregulates the gain increment per unit of work in time.
Further, the computing device groups t 0 Time-of-day comprehensive performance index, equipment set t 1 The active sensitivity of the active power equipment of the power grid to the safe and stable power transmission channel of the power grid at the moment comprises the following steps:
the comprehensive performance indexes of the equipment group comprise an up-regulation comprehensive performance index and a down-regulation comprehensive performance index, and the equipment t in the equipment group is used for 0 The average value of the up-regulation comprehensive performance indexes at the moment is taken as the equipment group t 0 The comprehensive performance index is adjusted up at the moment, and the equipment t in the equipment group is adjusted up 0 The average value of the time-of-day downregulation comprehensive performance index is taken as the equipment group t 0 The comprehensive performance index is adjusted down at the moment;
device t in device group 1 The average value of the active sensitivity of the active power equipment of the power grid to the active power sensitivity of the power grid safe and stable power transmission channel at the moment is taken as the equipment group t 1 The active sensitivity of the active equipment of the power grid to the safe and stable power transmission channel at any moment.
Further, computing device group t 1 The active command upper limit/lower limit and the active adjustment dead zone of the moment comprise:
device t in computing device set D 1 An upper active command limit and a lower active command limit for time instant:
wherein P is i.u.s To at the same timeT under the condition of not considering active regulation dead zone 1 The upper active limit of device i at time D, P i.0 At t 0 The active power of device i at time D, v i.u At t 0 Active up-regulation rate, t, of device i at time D i.0 The starting moment of executing the active instruction for the device i in D; if t 1 The accuracy of the active maximum value of the equipment i in the moment D meets the control requirement, and then P i.max 、P i.min Respectively t 1 Active maximum and active minimum for device i at time D, otherwise, P i.max 、P i.min Respectively t 0 The maximum and minimum active values of device i at time D; p (P) i.u At t 1 Upper limit of active command of device i at time D, P i.ε At t 0 Active regulation dead zone of device i at time D, P i.d.s To t without taking into account the active regulation dead zone 1 The lower active limit of device i, v, at time D i.d At t 0 Active downregulation rate of device i at time D, P i.d At t 1 The lower limit of the active instruction of the device i in the moment D;
device t in device group 1 The sum of the upper limits of the active commands of the times of day is used as the device group t 1 The upper limit of the active instruction of the moment, the device t in the device group 1 The sum of the lower limits of the active commands at the moment is taken as the equipment group t 1 The lower limit of the active command at the moment; device t in device group 0 Active control dead zone minimum value at time as the device group t 1 The active time adjusts the dead zone.
Further, an active coordination optimization decision model among the equipment groups is established, and optimization solution is carried out to obtain the equipment group t 1 An active command of a moment of time comprising:
wherein Z is the equipment group set of the power grid,for device group j in ZRegulating comprehensive performance index->Is a variable of 0/1 of the total number of the components,equal to 1, indicating an active up-regulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active up-regulation variable of equipment group j at moment Z, P j.0 At t 0 Active, +. >Down-regulating comprehensive performance index for device group j in Z,>is 0/1 variable, ">Equal to 1, indicating an active downregulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active downregulation variable, P, of equipment group j at time Z j.ε At t 1 Active regulation dead zone of device group j at time Z, P j.u At t 1 Upper limit of active command of equipment group j at time Z, P j.d At t 1 Active command lower limit of equipment group j in time Z, SL is t 1 Power grid safety and stability power transmission channel set at moment, P sl.lmt.OD At t 1 Time SL middle safetyReverse safety and stability quota of full-stability power transmission channel sl, P sl.0 At t 0 Active power of safe and stable power transmission channel SL in time SL, S sl.j At t 1 Active sensitivity of active power of equipment group j in moment Z to active power of safe and stable power transmission channel SL in SL, E is power grid active equipment set except equipment in D, S sl.e At t 1 Active sensitivity of equipment E in time E to safe and stable power transmission channel SL in SL, if t 1 The active power of the equipment E in the moment E runs according to the planned value, P e.1 At t 1 Active plan value of device E at time E, otherwise, P e.1 At t 1 Active predictor, P, for device E at time E e.0 At t 0 The active power of device E at time E, P sl.lmt.FD At t 1 Forward safe and stable limits of the safe and stable power transmission channel SL at time SL for t 1 Safe and stable power transmission channel controlled according to active plan value at moment, P is as follows sl.lmt.FD Is arranged as the safe and stable power transmission channel t 1 Active schedule value of time, correspondingly, P sl.lmt.OD Set to-P sl.lmt.FD Beta is a set parameter greater than 0, K f At t 0 Active static frequency characteristic coefficient f of time power grid 0 At t 0 Frequency of the time power grid, f r For the rated frequency of the electric network, P L At t 0 Moment of total power grid load, P e.max 、P e.min Respectively t 1 Active maximum and active minimum, alpha, for device E at time E u 、α d T respectively set according to power grid dispatching operation rules 1 The hot standby positive capacity coefficient and the hot standby negative capacity coefficient of the power grid at the moment; the active power of the equipment group and the equipment is positive when the injection power grid is positive, and negative when the outflow power grid is negative;
if the active coordination optimization decision model is in the optimal solutionEqual to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if +.>Equal to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if +.>Andare all equal to 0, then t 1 The active instruction of device group j at time Z is set to P j.0 。
Further, according to the device group t 1 All devices t in active instruction computing device group at moment 1 An active command of a moment of time comprising:
if the equipment group t 1 The active command at the moment is greater than t 0 And (3) building an active coordination optimization decision model of equipment in the following equipment group and carrying out optimization solving:
wherein M is a device group,for the up-regulation of the overall performance index of the devices M in the device group M,/for the devices M>Is 0/1 variable, ">Equal to 1, indicating an active up-regulation of device M in device group M,/for>Equal to 0, indicating that the active power of device M in device group M remains unchanged, +.>At t 1 Active up-regulation variable, P, of device M in time device group M m.0 At t 0 The active power, P, of a device M in a time group M m.ε At t 0 Active regulation dead zone of device M in time device group M, P m.u At t 1 Upper limit of active command for device M in time group M,/for device M>An active up-regulation instruction for the equipment group M;
if in the optimal solutionEqual to 1, then t 1 The active command of device M in time M is set to +.>Is the optimal solution of (a); if in the optimal solution->Equal to 0, then t 1 The active instruction of device M at time M is set to P m.0 ；
If the equipment group t 1 The active command at the moment is less than t 0 And (3) building an active coordination optimization decision model of equipment in the following equipment group and carrying out optimization solving:
In the method, in the process of the invention,down-regulation comprehensiveness for device M in MEnergy index, I/O (>Is 0/1 variable, ">Equal to 1, representing an active downregulation of device M in M,/->Equal to 0, indicating that the active power of device M in M remains unchanged, +>At t 1 Active downregulation variable of device M at time M, P m.d At t 1 The lower active command limit of device M in time M,/->An active power down command for device group n;
if in the optimal solutionEqual to 1, then t 1 The active command of device M in time M is set to +.>Is the optimal solution of (a); if +.>Equal to 0, then t 1 The active instruction of device M at time M is set to P m.0 ；
If the equipment group t 1 The active command of moment is equal to t 0 The active time of the moment, the device t in the device group 0 Active time as t 1 Active command of device M at time M.
Further, the power grid active equipment comprises power generation, load, energy storage and a power grid external connection line; the power grid safe and stable power transmission channel consists of a single or a plurality of lines/transformers, and comprises a power transmission channel controlled according to an active non-overrun limit and a power transmission channel controlled according to an active planning value.
The embodiment of the invention also provides a power grid active coordination optimization control decision device considering the adjustment dead zone, which comprises the following steps:
grouping module for optimally controlling the devices t in the device set D according to the active coordination 0 Time-of-day comprehensive performance index sum t 1 The active power of active equipment of the power grid at any moment is used for grouping the equipment in the step D to obtain an equipment group;
a calculation module for calculating each device group t 0 Time-of-day comprehensive performance index, equipment set t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, and equipment group t 1 An active command upper limit/lower limit and an active adjustment dead zone at the moment;
a first decision module for determining a device group t 0 Time-of-day comprehensive performance index sum t 1 The active sensitivity of active equipment of the power grid to the safe and stable power transmission channel of the power grid at any moment and the active of the active equipment of the power grid except the equipment in D are calculated by taking the optimal comprehensive performance of active coordination optimization control among equipment groups as a target and taking the equipment group t into consideration 1 The upper limit/lower limit of the active command at moment, the active regulation dead zone constraint and the safe and reliable operation constraint of the power grid are adopted, an active coordination optimization decision model between equipment groups is established, and optimization solution is carried out to obtain the equipment group t 1 An active command of time;
the method comprises the steps of,
a second decision module for determining a device group t 1 All devices t in active instruction computing device group at moment 1 Active command of moment.
Further, the grouping module is specifically configured to,
establishing an optimization model taking the minimum equipment group number as an optimization target and considering the following constraint conditions, and obtaining equipment groups through optimization solution calculation;
the constraint conditions are as follows:
a. apparatus and method for controlling the operation of a deviceAny two devices t in a group 0 The difference between the up-regulation comprehensive performance indexes at the moment is smaller than the comprehensive performance index difference threshold value;
b. any two devices t in the device group 0 The difference between the time-down comprehensive performance indexes is smaller than the comprehensive performance index difference threshold value;
c. for each safe and stable power transmission channel in a power grid, any two devices t in a device group 1 The difference between the active power of the moment and the active power sensitivity of the safe and stable power transmission channel of the power grid is smaller than an active power sensitivity difference threshold value;
the overall performance indicators of the device include an up-regulation overall performance indicator, which means that the device is at (t) 1 -t 0 ) The device up-regulates the gain increment of unit active power in time, and the down-regulating comprehensive performance index refers to the value obtained in the process (t 1 -t 0 ) The device downregulates the gain increment per unit of work in time.
The invention has the beneficial effects that:
the invention adopts a step-by-step optimization strategy of optimizing among groups and optimizing in groups, thereby not only reducing the scale of decision variables, improving the calculation speed, but also ensuring the calculation precision of instructions; according to the method, the dead zone is considered in the decision calculation link, so that the execution rate of the control instruction is improved, and the power grid safety and stability risks possibly caused by the fact that the instruction is not executed due to the dead zone adjustment in the issuing link of a large number of control devices are avoided. In addition, the invention distinguishes the active up-regulation and the active down-regulation in terms of comprehensive performance indexes, reflects the actual difference of controllable equipment such as a conventional unit, new energy, load, energy storage and the like in the power price, regulation cost and the like in the active up-regulation and active down-regulation stages, and meets the actual practice of load storage interaction of a source network and economic and efficient operation.
Drawings
FIG. 1 is a flow chart of a power grid active coordination optimization control decision method taking the adjustment dead zone into consideration.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, the embodiment of the invention provides a power grid active coordination optimization control decision method considering adjustment dead zone, which comprises the following steps:
step 1: based on the current t 0 Active instruction assessment t for calculating running state of power grid at moment 1 Active sensitivity of active power equipment of a power grid to a safe and stable power transmission channel of the power grid at moment, and equipment t in equipment set D is optimally controlled according to active coordination 0 Time-of-day comprehensive performance index sum t 1 The active sensitivity of the active power to the safe and stable power transmission channel of the power grid at the moment, grouping the equipment in D to obtain an equipment group, and determining the equipment group t 0 Time-of-day comprehensive performance index sum t 1 Active sensitivity of active power at time to safe and stable power transmission channels of a power grid;
specifically, the power grid active equipment comprises power generation, load, energy storage and power grid external connection lines; the power grid safety and stability transmission channel consists of a single or a plurality of lines/transformers, and comprises a transmission channel controlled according to an active non-overrun (including overload limit of the lines/transformers) and a transmission channel controlled according to an active planning value.
Specifically, based on t 0 Calculating t of running state of power grid at moment 1 The active sensitivity of the active power of the power grid active equipment to the safe and stable power transmission channel of the power grid at any moment is specifically as follows:
if relative to t 0 Time t 1 If the topology structure of the power grid is unchanged at the moment, aiming at t 0 The method comprises the steps of calculating active sensitivity of active power equipment of a power grid to a safe and stable power transmission channel of the power grid by adopting a tide calculation method according to running state data of the power grid at moment, and taking the active sensitivity as t 1 Active sensitivity of active power to safe and stable power transmission channel of power grid is set at moment, otherwise, t is set according to topological structure variation of power grid 0 Correspondingly adjusting the running state data of the power grid at moment, and calculating the active sensitivity of the active power of the power grid active equipment to the safe and stable power transmission channel of the power grid by adopting a power flow calculation method as t aiming at the adjusted running state data of the power grid 1 The time equipment comprisesThe active sensitivity of the power transmission channel is safely and stably controlled by the power pair power grid.
Specifically, the comprehensive performance indexes of the device include an up-regulation comprehensive performance index and a down-regulation comprehensive performance index, wherein the up-regulation comprehensive performance index is defined as a value in (t 1 -t 0 ) The device up-regulates the gain increment of unit active power in time, and down-regulates the comprehensive performance index to be in (t) 1 -t 0 ) The device can adjust the gain increment of unit active power in time, can be positive or negative, and can be divided into calculating gain increment according to electricity price and cost.
Specifically, grouping the devices in D includes:
establishing an optimization model taking the minimum equipment group number as an optimization target and considering the following constraint conditions, and obtaining equipment groups through optimization calculation;
the constraint conditions are as follows:
a any two devices t in a device group 0 The difference between the up-regulation comprehensive performance indexes at the moment is smaller than the comprehensive performance index difference threshold value;
b any two devices t in the device group 0 The difference between the time-down comprehensive performance indexes is smaller than the comprehensive performance index difference threshold value;
c, aiming at each safe and stable power transmission channel in the power grid, any two devices t in the device group 1 The difference between the active power sensitivity of the active power to the safe and stable power transmission channel of the power grid at the moment is smaller than the active power sensitivity difference threshold value.
Specifically, the comprehensive performance indexes of the equipment group include an up-regulation comprehensive performance index and a down-regulation comprehensive performance index, and the equipment t in the equipment group is respectively set 0 The average value of the up-regulation comprehensive performance indexes and the average value of the down-regulation comprehensive performance indexes at the moment are taken as the equipment group t 0 The up-regulation comprehensive performance index and the down-regulation comprehensive performance index at the moment; aiming at each safe and stable power transmission channel in the power grid, respectively arranging equipment t in the equipment group 1 The average value of the active sensitivity of the active power to the safe and stable power transmission channel of the power grid at the moment is taken as the equipment group t 1 The active power at the moment is sensitive to the active power of the safe and stable power transmission channel.
Step 2: consider device t 0 Active adjustment dead zone constraint of moment and determining equipment t in D 1 The upper limit/lower limit of the active command at the moment generates each equipment group t 1 An active command upper limit/lower limit and an active adjustment dead zone at the moment;
specifically, the device t in D is determined by the formula (1) and the formula (2) respectively 1 An upper active command limit and a lower active command limit for time instant:
wherein P is i.u.s To t without taking into account the active regulation dead zone 1 The upper active limit of device i at time D, P i.0 At t 0 The active power of device i at time D, v i.u At t 0 Active up-regulation rate, t, of device i at time D i.0 The starting moment of executing the active instruction for the device i in D; if t 1 The accuracy of the active maximum value of the equipment i in the moment D meets the control requirement, and then P i.max 、P i.min Respectively t 1 Active maximum and active minimum for device i at time D, otherwise, P i.max 、P i.min Respectively t 0 The maximum and minimum active values of device i at time D; for example, for new energy station i, if t 1 The accuracy of the time forecast value meets the control requirement, then t is used for 1 The time forecast value is taken as the active maximum value thereof and is according to t 1 Calculating an active minimum value by the time predicted value and the duty ratio of the marker post fan/photovoltaic power generation unit; otherwise, according to t 0 Determining an active maximum value and an active minimum value according to predicted values meeting precision requirements at any moment; p (P) i.u At t 1 Upper limit of active command of device i at time D, P i.ε At t 0 Active regulation dead zone of device i at time D, P i.d.s To t without taking into account the active regulation dead zone 1 Device i at time DLower limit of work, v i.d At t 0 Active downregulation rate of device i at time D, P i.d At t 1 The lower active command limit for device i at time D.
Aiming at each safe and stable power transmission channel in the power grid, respectively arranging equipment t in the equipment group 1 The sum of the upper active command limits and the lower active command limits at the moment is taken as the equipment group t 1 An upper active command limit and a lower active command limit at a moment; device t in device group 0 Active control dead zone minimum value at time as the device group t 1 The active time adjusts the dead zone.
Step 3: according to the set t of devices 0 Time-of-day comprehensive performance index, t 1 Active sensitivity of active equipment of a power grid to active sensitivity of a power grid safe and stable power transmission channel at moment and active planned values or predicted values of other active equipment of the power grid except equipment in D, and taking comprehensive performance optimization control of active coordination among equipment groups as a target, and taking t into account 1 The upper limit/lower limit of the active command of the equipment groups at the moment, the active regulation dead zone constraint and the safe and reliable operation constraint of the power grid are adopted, an active coordination optimization decision model between the equipment groups is established, and the equipment groups t are generated according to the optimal solution obtained by optimization calculation 1 Active command of moment.
Specifically, the active coordination optimization decision model among the device groups is expressed by a formula (3),
wherein Z is the equipment group set of the power grid,up-regulating comprehensive performance index for device group j in Z,>is 0/1 variable, as active up-regulation flag of device group j in Z,/>Equal to 1, indicating an active up-regulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active up-regulation variable of equipment group j at moment Z, P j.0 At t 0 Active, +.>Down-regulating comprehensive performance index for device group j in Z,>is 0/1 variable, as an active downregulation flag for device group j in Z,/I>Equal to 1, indicating an active downregulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 The active down-regulating variable of the equipment group j in the moment Z;
P j.ε at t 1 Active regulation dead zone of device group j at time Z, P j.u At t 1 Upper limit of active command of equipment group j at time Z, P j.d At t 1 The lower limit of the active instruction of the equipment group j at the moment Z;
SL is t 1 Power grid safety and stability power transmission channel set at moment, P sl.lmt.OD At t 1 Reverse safety and stability quota of safety and stability power transmission channel SL in time SL, P sl.0 At t 0 Active power of safe and stable power transmission channel SL in time SL, S sl.j At t 1 Active power of equipment group j in moment Z corresponds to active power sensitivity of safe and stable power transmission channel SL in SL; e is the active equipment set of the power grid except the equipment in D, S sl.e At t 1 Active sensitivity of equipment E in time E to safe and stable power transmission channel SL in SL, if t 1 The active power of the equipment E in the moment E runs according to the planned value, P e.1 At t 1 Active plan value of device E at time E, otherwise, P e.1 At t 1 Active predictor, P, for device E at time E e.0 At t 0 The active power of device E at time E, P sl.lmt.FD At t 1 Forward safety and stability limits of the safety and stability transmission channel SL at the moment SL;
for t 1 Safe and stable power transmission channel controlled according to active plan value at moment, P is as follows sl.lmt.FD Is arranged as the safe and stable power transmission channel t 1 Active schedule value of time, correspondingly, P sl.lmt.OD Set to-P sl.lmt.FD ；
Beta is a set parameter greater than 0, typically set to 0.8, K f At t 0 Active static frequency characteristic coefficient f of time power grid 0 At t 0 Frequency of the time power grid, f r For the rated frequency of the electric network, P L At t 0 The total amount of grid load at any moment;
P e.max 、P e.min respectively t 1 Active maximum and active minimum, alpha, for device E at time E u 、α d T respectively set according to power grid dispatching operation rules 1 The hot standby positive capacity coefficient and the hot standby negative capacity coefficient of the power grid at the moment;
The active power of the equipment group and the equipment is positive when the power injection grid is positive, and the power outflow grid is negative;
if in the optimal solution of formula (3)Equal to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if +.>Equal to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if +.>And->Are all equal to 0, then t 1 The active instruction of device group j at time Z is set to P j.0 。
Step 4: according to the device t in the device group 0 Time-of-day comprehensive performance index and equipment set t 1 The active command at moment aims at optimizing the comprehensive performance of active coordination and optimization control of equipment in the equipment group, and considers the equipment t 0 Active adjustment dead zone constraint sum t of time 1 The upper limit/lower limit constraint of the active instruction at the moment is used for establishing an active coordination optimization decision model of the equipment in the equipment group, and generating an equipment t in the equipment group according to an optimal solution obtained by optimization calculation 1 Active command of moment.
Specifically, if the device group t 1 The active command at the moment is greater than t 0 The active coordination optimization decision model of the equipment in the equipment group is expressed by a formula (4) if the active time is moment; if the equipment group t 1 The active command at the moment is less than t 0 The active coordination optimization decision model of the equipment in the equipment group is expressed by a formula (5) if the active time is moment; if the equipment group t 1 The active command of moment is equal to t 0 The active time of the moment, the device t in the device group 0 Active time as t 1 An active command of time;
wherein M is a device group,for the up-regulation of the overall performance index of the devices M in the device group M,/for the devices M>Is 0/1 variable, as an active up-regulation flag for device M in device group M,/for device M>Equal to 1, indicating an active up-regulation of device M in device group M,/for>Equal to 0, indicating that the active power of device M in device group M remains unchanged, +.>At t 1 Active up-regulation variable, P, of device M in time device group M m.0 At t 0 The active power, P, of a device M in a time group M m.ε At t 0 Active regulation dead zone of device M in time device group M, P m.u At t 1 Upper limit of active command for device M in time group M,/for device M>An active up-regulation instruction for the equipment group M;
if in the optimal solution of formula (4)Equal to 1, then t 1 The active command of device M in time M is set to +.>Is the optimal solution of (a); if +.>Equal to 0, then t 1 The active instruction of device M at time M is set to P m.0 。
In the method, in the process of the invention,down-regulating comprehensive performance index of device M in M, < >>Is 0/1 variable, as an active downregulation flag for device M in M, +.>Equal to 1, representing an active downregulation of device M in M,/->Equal to 0, indicating that the active power of device M in M remains unchanged, + >At t 1 Active downregulation variable of device M at time M, P m.d At t 1 The lower active command limit of device M in time M,/->An active power down command for the equipment group M;
if in the optimal solution of formula (5)Equal to 1, then t 1 The active command of device M in time M is set to +.>Is the optimal solution of (a); if +.>Equal to 0, then t 1 The active instruction of device M at time M is set to P m.0 。
The embodiment of the invention also provides a power grid active coordination optimization control decision device considering the adjustment dead zone, which comprises the following steps:
grouping module for optimally controlling the devices t in the device set D according to the active coordination 0 Time-of-day comprehensive performance index sum t 1 The active power of active equipment of the power grid at any moment is used for grouping the equipment in the step D to obtain an equipment group;
a calculation module for calculating each device group t 0 Time-of-day comprehensive performance index, t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, and t 1 An active command upper limit/lower limit and an active adjustment dead zone at the moment;
a first decision module for determining a device group t 0 Time-of-day comprehensive performance index sum t 1 Active sensitivity of active power equipment of a power grid to a power grid safe and stable power transmission channel at moment, and active planned value or predicted value of active power equipment of the power grid except equipment in D, and taking comprehensive performance optimization control of active coordination among equipment groups as a target, and considering equipment group t 1 The upper limit/lower limit of the active command at moment, the active regulation dead zone constraint and the safe and reliable operation constraint of the power grid are adopted, an active coordination optimization decision model between equipment groups is established, and optimization solution is carried out to obtain the equipment group t 1 An active command of time;
the method comprises the steps of,
a second decision module for determining a device group t 1 All devices t in active instruction computing device group at moment 1 Active command of moment.
In the embodiment of the invention, the grouping module is specifically used for,
establishing an optimization model taking the minimum equipment group number as an optimization target and considering the following constraint conditions, and obtaining equipment groups through optimization solution calculation;
the constraint conditions are as follows:
a. any two devices t in the device group 0 The difference between the up-regulation comprehensive performance indexes at the moment is smaller than the comprehensive performance index difference threshold value;
b. any two devices t in the device group 0 The difference between the time-down comprehensive performance indexes is smaller than the comprehensive performance index difference threshold value;
c. for each safe and stable power transmission channel in a power grid, any two devices t in a device group 1 The difference between the active power of the moment and the active power sensitivity of the safe and stable power transmission channel of the power grid is smaller than an active power sensitivity difference threshold value;
the overall performance indicators of the device include an up-regulation overall performance indicator, which means that the device is at (t) 1 -t 0 ) The device up-regulates the gain increment of unit active power in time, and the down-regulating comprehensive performance index refers to the value obtained in the process (t 1 -t 0 ) The device downregulates the gain increment per unit of work in time.
In the embodiment of the invention, the calculation module is specifically used for,
device t in computing device set D 1 An upper active command limit and a lower active command limit for time instant:
wherein P is i.u.s To t without taking into account the active regulation dead zone 1 The upper active limit of device i at time D, P i.0 At t 0 The active power of device i at time D, v i.u At t 0 Active up-regulation rate, t, of device i at time D i.0 The starting moment of executing the active instruction for the device i in D; if t 1 The accuracy of the active maximum value of the equipment i in the moment D meets the control requirement, and then P i.max 、P i.min Respectively t 1 Device i at time DActive maximum and active minimum of (2), otherwise, P i.max 、P i.min Respectively t 0 The maximum and minimum active values of device i at time D; p (P) i.u At t 1 Upper limit of active command of device i at time D, P i.ε At t 0 Active regulation dead zone of device i at time D, P i.d.s To t without taking into account the active regulation dead zone 1 The lower active limit of device i, v, at time D i.d At t 0 Active downregulation rate of device i at time D, P i.d At t 1 The lower limit of the active instruction of the device i in the moment D;
device t in device group 1 The sum of the upper limits of the active commands of the times of day is used as the device group t 1 The upper limit of the active instruction of the moment, the device t in the device group 1 The sum of the lower limits of the active commands at the moment is taken as the equipment group t 1 The lower limit of the active command at the moment; device t in device group 0 Active control dead zone minimum value at time as the device group t 1 The active time adjusts the dead zone.
In the embodiment of the present invention, the first decision module is specifically configured to,
and carrying out optimization solving on the following active coordination optimization decision model:
wherein Z is the equipment group set of the power grid,up-regulating comprehensive performance index for device group j in Z,>is a variable of 0/1 of the total number of the components,equal to 1, indicating an active up-regulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active up-regulation variable of equipment group j at moment Z, P j.0 At t 0 Active, +.>Down-regulating comprehensive performance index for device group j in Z,>is 0/1 variable, ">Equal to 1, indicating an active downregulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active downregulation variable, P, of equipment group j at time Z j.ε At t 1 Active regulation dead zone of device group j at time Z, P j.u At t 1 Upper limit of active command of equipment group j at time Z, P j.d At t 1 Active command lower limit of equipment group j in time Z, SL is t 1 Power grid safety and stability power transmission channel set at moment, P sl.lmt.OD At t 1 Reverse safety and stability quota of safety and stability power transmission channel SL in time SL, P sl.0 At t 0 Active power of safe and stable power transmission channel SL in time SL, S sl.j At t 1 Active sensitivity of active power of equipment group j in moment Z to active power of safe and stable power transmission channel SL in SL, E is power grid active equipment set except equipment in D, S sl.e At t 1 Active sensitivity of equipment E in time E to safe and stable power transmission channel SL in SL, if t 1 Device E has at time EWork is operated according to the planned value, P e.1 At t 1 Active plan value of device E at time E, otherwise, P e.1 At t 1 Active predictor, P, for device E at time E e.0 At t 0 The active power of device E at time E, P sl.lmt.FD At t 1 Forward safe and stable limits of the safe and stable power transmission channel SL at time SL for t 1 Safe and stable power transmission channel controlled according to active plan value at moment, P is as follows sl.lmt.FD Is arranged as the safe and stable power transmission channel t 1 Active schedule value of time, correspondingly, P sl.lmt.OD Set to-P sl.lmt.FD Beta is a set parameter greater than 0, K f At t 0 Active static frequency characteristic coefficient f of time power grid 0 At t 0 Frequency of the time power grid, f r For the rated frequency of the electric network, P L At t 0 Moment of total power grid load, P e.max 、P e.min Respectively t 1 Active maximum and active minimum, alpha, for device E at time E u 、α d T respectively set according to power grid dispatching operation rules 1 The hot standby positive capacity coefficient and the hot standby negative capacity coefficient of the power grid at the moment; the active power of the equipment group and the equipment is positive when the injection power grid is positive, and negative when the outflow power grid is negative;
if the active coordination optimization decision model is in the optimal solutionEqual to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if +.>Equal to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if saidOptimal solution of active coordination optimization decision model +.>Andare all equal to 0, then t 1 The active instruction of device group j at time Z is set to P j.0 。
In the embodiment of the present invention, the second decision module is specifically configured to,
if the equipment group t 1 The active command at the moment is greater than t 0 And (3) building an active coordination optimization decision model of equipment in the following equipment group and carrying out optimization solving:
wherein M is a device group,for the up-regulation of the overall performance index of the devices M in the device group M,/for the devices M>Is 0/1 variable, ">Equal to 1, indicating an active up-regulation of device M in device group M,/for >Equal to 0, indicating that the active power of device M in device group M remains unchanged, +.>At t 1 Active up-regulation variable, P, of device M in time device group M m.0 At t 0 The active power, P, of a device M in a time group M m.ε At t 0 Active regulation dead zone of device M in time device group M, P m.u At t 1 Upper limit of active command for device M in time group M,/for device M>An active up-regulation instruction for the equipment group M;
if in the optimal solutionEqual to 1, then t 1 The active command of device M in time M is set to +.>Is the optimal solution of (a); if in the optimal solution->Equal to 0, then t 1 The active instruction of device M at time M is set to P m.0 ；
If the equipment group t 1 The active command at the moment is less than t 0 And (3) building an active coordination optimization decision model of equipment in the following equipment group and carrying out optimization solving:
in the method, in the process of the invention,down-regulating comprehensive performance index of device M in M, < >>Is 0/1 variable, ">Equal to 1, representing an active downregulation of device M in M,/->Equal to 0, indicating that the active power of device M in M remains unchanged, +>At t 1 Active downregulation variable of device M at time M, P m.d At t 1 The lower active command limit of device M in time M,/->An active power down command for the equipment group M;
if in the optimal solutionEqual to 1, then t 1 The active command of device M in time M is set to +. >Is the optimal solution of (a); if +.>Equal to 0, then t 1 The active instruction of device M at time M is set to P m.0 ；
If the equipment group t 1 The active command of moment is equal to t 0 The active time of the moment, the device t in the device group 0 Active time as t 1 Active command of device M at time M.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather as providing for the use of additional embodiments and advantages of all such modifications, equivalents, improvements and similar to the present invention are intended to be included within the scope of the present invention as defined by the appended claims.

Claims (6)

1. The power grid active coordination optimization control decision method considering the regulation dead zone is characterized by comprising the following steps of:
Optimizing and controlling the equipment t in the equipment set D according to the active coordination 0 Time-of-day comprehensive performance index sum t 1 The active power of active equipment of the power grid at any moment is used for grouping the equipment in the step D to obtain an equipment group; by a means ofThe grouping comprises:
establishing an optimization model taking the minimum equipment group number as an optimization target and considering the following constraint conditions, and obtaining equipment groups through optimization solution calculation;
the constraint conditions are as follows:
a. any two devices t in the device group 0 The difference between the up-regulation comprehensive performance indexes at the moment is smaller than the comprehensive performance index difference threshold value;
b. any two devices t in the device group 0 The difference between the time-down comprehensive performance indexes is smaller than the comprehensive performance index difference threshold value;
c. for each safe and stable power transmission channel in a power grid, any two devices t in a device group 1 The difference between the active power of the moment and the active power sensitivity of the safe and stable power transmission channel of the power grid is smaller than an active power sensitivity difference threshold value;
the overall performance indicators of the device include an up-regulation overall performance indicator, which means that the device is at (t) 1 -t 0 ) The device up-regulates the gain increment of unit active power in time, and the down-regulating comprehensive performance index refers to the value obtained in the process (t 1 -t 0 ) The device down-regulates the gain increment of unit active power in time;
calculating each equipment group t 0 Time-of-day comprehensive performance index, equipment set t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, and equipment group t 1 An active command upper limit/lower limit and an active adjustment dead zone at the moment; the equipment group t 1 The active command upper/lower limit and active adjustment dead zone for the moment are calculated as follows:
device t in computing device set D 1 An upper active command limit and a lower active command limit for time instant:
wherein P is i.u.s To t without taking into account the active regulation dead zone 1 The upper active limit of device i at time D, P i.0 At t 0 The active power of device i at time D, v i.u At t 0 Active up-regulation rate, t, of device i at time D i.0 The starting moment of executing the active instruction for the device i in D; if t 1 The accuracy of the active maximum value of the equipment i in the moment D meets the control requirement, and then P i.max 、P i.min Respectively t 1 Active maximum and active minimum for device i at time D, otherwise, P i.max 、P i.min Respectively t 0 The maximum and minimum active values of device i at time D; p (P) i.u At t 1 Upper limit of active command of device i at time D, P i.ε At t 0 Active regulation dead zone of device i at time D, P i.d.s To t without taking into account the active regulation dead zone 1 The lower active limit of device i, v, at time D i.d At t 0 Active downregulation rate of device i at time D, P i.d At t 1 The lower limit of the active instruction of the device i in the moment D;
device t in device group 1 The sum of the upper limits of the active commands of the times of day is used as the device group t 1 The upper limit of the active instruction of the moment, the device t in the device group 1 The sum of the lower limits of the active commands at the moment is taken as the equipment group t 1 The lower limit of the active command at the moment; device t in device group 0 Active control dead zone minimum value at time as the device group t 1 Active regulation dead zone of moment;
according to the set t of devices 0 Time-of-day comprehensive performance index sum t 1 The active sensitivity of active power equipment of the power grid to a safe and stable power transmission channel of the power grid at any moment, and the active power of the active power equipment of the power grid except the equipment in D are aimed at optimizing the comprehensive performance of active power coordination optimization control among equipment groups, and the equipment group t is considered 1 The upper limit/lower limit of the active command at the moment, the dead zone constraint of active regulation and the safe and reliable operation constraint of the power grid, and the equipment groups are establishedThe active coordination optimization decision model is used for carrying out optimization solution to obtain a device group t 1 An active command of a moment of time comprising:
wherein Z is the equipment group set of the power grid,up-regulating comprehensive performance index for device group j in Z, >Is 0/1 variable, ">Equal to 1, indicating an active up-regulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active up-regulation variable of equipment group j at moment Z, P j.0 At t 0 Active, +.>Down-regulating comprehensive performance index for device group j in Z,>is 0/1 variable, ">Equal to 1, indicating an active downregulation of device group j in Z,/>Equal to 0, indicating that the active power of device group j in Z remains unchanged, +.>At t 1 Active downregulation variable, P, of equipment group j at time Z j.ε At t 1 Active regulation dead zone of device group j at time Z, P j.u At t 1 Upper limit of active command of equipment group j at time Z, P j.d At t 1 Active command lower limit of equipment group j in time Z, SL is t 1 Power grid safety and stability power transmission channel set at moment, P sl.lmt.OD At t 1 Reverse safety and stability quota of safety and stability power transmission channel SL in time SL, P sl.0 At t 0 Active power of safe and stable power transmission channel SL in time SL, S sl.j At t 1 Active sensitivity of active power of equipment group j in moment Z to active power of safe and stable power transmission channel SL in SL, E is power grid active equipment set except equipment in D, S sl.e At t 1 Active sensitivity of equipment E in time E to safe and stable power transmission channel SL in SL, if t 1 The active power of the equipment E in the moment E runs according to the planned value, P e.1 At t 1 Active plan value of device E at time E, otherwise, P e.1 At t 1 Active predictor, P, for device E at time E e.0 At t 0 The active power of device E at time E, P sl.lmt.FD At t 1 Forward safe and stable limits of the safe and stable power transmission channel SL at time SL for t 1 Safe and stable power transmission channel controlled according to active plan value at moment, P is as follows sl.lmt.FD Is arranged as the safe and stable power transmission channel t 1 Active schedule value of time, correspondingly, P sl.lmt.OD Set to-P sl.lmt.FD Beta is a set parameter greater than 0, K f At t 0 Active static frequency characteristic coefficient f of time power grid 0 At t 0 Frequency of the time power grid, f r For the rated frequency of the electric network, P L At t 0 Moment of total power grid load, P e.max 、P e.min Respectively t 1 Set at time EActive maximum and active minimum values of e, alpha u 、α d T respectively set according to power grid dispatching operation rules 1 The hot standby positive capacity coefficient and the hot standby negative capacity coefficient of the power grid at the moment; the active power of the equipment group and the equipment is positive when the injection power grid is positive, and negative when the outflow power grid is negative;
if the active coordination optimization decision model is in the optimal solutionEqual to 1, then t 1 The active command of device group j in time Z is set to +.>Is the optimal solution of (a); if +.>Equal to 1, then t 1 The active command of device group j in time Z is set to +. >Is the optimal solution of (a); if +.>And->Are all equal to 0, then t 1 The active instruction of device group j at time Z is set to P j.0 ；
According to the set t of devices 1 All devices t in active instruction computing device group at moment 1 An active command of a moment of time comprising:
if the equipment group t 1 The active command at the moment is greater than t 0 And (3) building an active coordination optimization decision model of equipment in the following equipment group and carrying out optimization solving:
wherein M is a device group,for the up-regulation of the overall performance index of the devices M in the device group M,/for the devices M>Is 0/1 variable, ">Equal to 1, indicating an active up-regulation of device M in device group M,/for>Equal to 0, indicating that the active power of device M in device group M remains unchanged, +.>At t 1 Active up-regulation variable, P, of device M in time device group M m.0 At t 0 The active power, P, of a device M in a time group M m.ε At t 0 Active regulation dead zone of device M in time device group M, P m.u At t 1 Upper limit of active command for device M in time group M,/for device M>An active up-regulation instruction for the equipment group M;
if in the optimal solutionEqual to 1, then t 1 The active instruction of device M in time device group M is set to +.>Is the optimal solution of (a); if in the optimal solution->Equal to 0, then t 1 The active instruction of the device M in the time device group M is set to be P m.0 ；
If the equipment group t 1 The active command at the moment is less than t 0 And (3) building an active coordination optimization decision model of equipment in the following equipment group and carrying out optimization solving:
in the method, in the process of the invention,for downregulating the overall performance index of device M in device group M,/->Is 0/1 variable, ">Equal to 1, indicating an active downregulation of device M in device group M, +.>Equal to 0, indicating that the active power of device M in device group M remains unchanged, +.>At t 1 Active downregulation variable, P, of device M in time group M m.d At t 1 Active command lower limit of device M in time device group M, +.>An active power down command for the equipment group M;
if the optimal solutionIn (a)Equal to 1, then t 1 The active instruction of device M in time device group M is set to +.>Is the optimal solution of (a); if +.>Equal to 0, then t 1 The active instruction of the device M in the time device group M is set to be P m.0 ；
If the equipment group t 1 The active command of moment is equal to t 0 The active time of the moment, the device t in the device group 0 Active time as t 1 Active command of device M in time device group M.
2. The grid active coordination optimization control decision method considering regulation dead zone as claimed in claim 1, wherein t is 1 The active sensitivity of the active power equipment of the power grid to the safe and stable power transmission channel of the power grid at the moment is calculated as follows:
If relative to t 0 Time t 1 If the topology structure of the power grid is unchanged at the moment, aiming at t 0 The method comprises the steps of calculating active sensitivity of active power equipment of a power grid to a safe and stable power transmission channel of the power grid by adopting a tide calculation method according to running state data of the power grid at moment, and taking the active sensitivity as t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, otherwise, t is calculated according to topological structure variation of power grid 0 Correspondingly adjusting the running state data of the power grid at moment, and calculating the active sensitivity of the active power of the power grid active equipment to the safe and stable power transmission channel of the power grid by adopting a power flow calculation method as t aiming at the adjusted running state data of the power grid 1 The active sensitivity of the active equipment of the power grid to the safe and stable power transmission channel of the power grid at any moment.
3. The method for power grid active coordination optimization control decision taking dead zone adjustment into consideration as set forth in claim 1, wherein each equipment group t is calculated 0 Time-of-day comprehensive performance index, equipment set t 1 The active sensitivity of the active power equipment of the power grid to the safe and stable power transmission channel of the power grid at the moment comprises the following steps:
the comprehensive performance indexes of the equipment group comprise an up-regulation comprehensive performance index and a down-regulation comprehensive performance index, and the equipment t in the equipment group is used for 0 The average value of the up-regulation comprehensive performance indexes at the moment is taken as the equipment group t 0 The comprehensive performance index is adjusted up at the moment, and the equipment t in the equipment group is adjusted up 0 The average value of the time-of-day downregulation comprehensive performance index is taken as the equipment group t 0 The comprehensive performance index is adjusted down at the moment;
device t in device group 1 The average value of the active sensitivity of the active power equipment of the power grid to the active power sensitivity of the power grid safe and stable power transmission channel at the moment is taken as the equipment group t 1 The active sensitivity of the active equipment of the power grid to the safe and stable power transmission channel at any moment.
4. A grid active coordination optimization control decision method considering regulation dead zone according to any one of claims 1 to 3, wherein the grid active equipment comprises power generation, load, energy storage and grid-to-external tie lines; the power grid safe and stable power transmission channel consists of a single or a plurality of lines/transformers, and comprises a power transmission channel controlled according to an active non-overrun limit and a power transmission channel controlled according to an active planning value.
5. A power grid active coordination optimization control decision device considering an adjustment dead zone, characterized in that it is used for implementing the power grid active coordination optimization control decision method considering an adjustment dead zone according to any one of claims 1 to 3, said device comprising:
Grouping module for optimally controlling the devices t in the device set D according to the active coordination 0 Time-of-day comprehensive performance index sum t 1 Active sensitivity of active equipment of power grid to safe and stable power transmission channel of power grid at moment, and dividing equipment in DGrouping to obtain a device group;
a calculation module for calculating each device group t 0 Time-of-day comprehensive performance index, equipment set t 1 Active sensitivity of active power equipment of power grid to safe and stable power transmission channel of power grid at moment, and equipment group t 1 An active command upper limit/lower limit and an active adjustment dead zone at the moment;
a first decision module for determining a device group t 0 Time-of-day comprehensive performance index sum t 1 The active sensitivity of active equipment of the power grid to the safe and stable power transmission channel of the power grid at any moment and the active of the active equipment of the power grid except the equipment in D are calculated by taking the optimal comprehensive performance of active coordination optimization control among equipment groups as a target and taking the equipment group t into consideration 1 The upper limit/lower limit of the active command at moment, the active regulation dead zone constraint and the safe and reliable operation constraint of the power grid are adopted, an active coordination optimization decision model between equipment groups is established, and optimization solution is carried out to obtain the equipment group t 1 An active command of time;
the method comprises the steps of,
A second decision module for determining a device group t 1 All devices t in active instruction computing device group at moment 1 Active command of moment.
6. The grid active coordination optimization control decision device considering regulation dead zone according to claim 5, wherein the grouping module is specifically configured to,
establishing an optimization model taking the minimum equipment group number as an optimization target and considering the following constraint conditions, and obtaining equipment groups through optimization solution calculation;
the constraint conditions are as follows:
a. any two devices t in the device group 0 The difference between the up-regulation comprehensive performance indexes at the moment is smaller than the comprehensive performance index difference threshold value;
b. any two devices t in the device group 0 The difference between the time-down comprehensive performance indexes is smaller than the comprehensive performance index difference threshold value;
c. aiming at each safe and stable power transmission channel in power gridAny two devices t in the device group 1 The difference between the active power of the moment and the active power sensitivity of the safe and stable power transmission channel of the power grid is smaller than an active power sensitivity difference threshold value;
the overall performance indicators of the device include an up-regulation overall performance indicator, which means that the device is at (t) 1 -t 0 ) The device up-regulates the gain increment of unit active power in time, and the down-regulating comprehensive performance index refers to the value obtained in the process (t 1 -t 0 ) The device downregulates the gain increment per unit of work in time.
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