CN116093924A - Emergency control decision system, method and storage medium - Google Patents

Abstract

The invention discloses an emergency control decision-making system, an emergency control decision-making method and a storage medium, wherein the emergency control decision-making system comprises a subsystem for safely and stably analyzing files; the subsystem is used for updating the current value strategy state and the fault checking priority of the corresponding section moment in the expected fault management table; the subsystem is used for updating the safety check state, the fault optimization priority and the security stability risk of the current value strategy at the corresponding section moment in the expected fault management table; the subsystem is used for updating the strategy optimization state corresponding to the section moment in the expected fault management table; and the subsystem is used for updating the current value strategy of the emergency control device according to the current value strategy state, the safety check state and the strategy optimization state. The coordinated operation of the five subsystems can rapidly identify the conditions of mismatching and inadaptation of the current value strategy of the emergency control, and ensure the reliability and effectiveness of the emergency control decision under the power grid operation mode with strong uncertainty; the method can adapt to the rapid and random change of the running mode of the power grid.

Description

Emergency control decision system, method and storage medium

Technical Field

The invention relates to the technical field of power system control, in particular to an emergency control decision system, an emergency control decision method and a storage medium.

Background

The emergency control is an important guarantee for the stability and reliability of the operation of the power grid, and is an indispensable ring for realizing a novel power system taking new energy as a theme. In the situation of large-scale grid connection of renewable energy sources represented by wind and light, the emergency control decision faces complex uncertainty. In order to cope with the influence of natural fluctuation and uncertainty of renewable energy sources and inhibit the randomness of prediction errors, an effective and economic emergency control strategy is scientifically and rapidly formulated, and the method has important significance on the influence and the improvement of the stable operation capability of the power grid. Existing "offline computing, real-time matching" emergency control decision modes face significant challenges.

The patent application with publication number of CN202010254245.2 discloses a steady-state safety emergency control online pre-decision party taking a steady-state safety emergency control strategy into account, and proposes a steady-state safety emergency control online pre-decision method based on steady-state safety emergency control strategy identification, but fails to explain how to ensure that an emergency control decision can adapt to the change of a power grid operation mode under a strong uncertainty environment. The patent application with publication number CN201510342899 discloses a power system safety and stability self-adaptive emergency control system and a method, and the method provides the power system safety and stability emergency control system which takes the future state of the power grid into account, but the predicted future state of the power grid under the strong uncertainty environment is inaccurate, and the emergency control strategy based on the system still cannot guarantee the adaptability to the running mode of the power grid. The patent application with publication number of CN201610315429 discloses a safe and stable self-adaptive emergency control decision method based on an on-value control measure, and proposes the safe and stable self-adaptive emergency control decision method based on the on-value control measure for specifying an expected fault, but fails to explain the priority problem of massive expected fault emergency control decisions under a strong uncertainty environment.

Therefore, the prior art cannot guarantee the reliability of emergency control decisions in a power grid operation mode with strong uncertainty, and cannot effectively adapt to the rapid and random change of the power grid operation mode.

Disclosure of Invention

The invention aims to provide an emergency control decision system, an emergency control decision method and a storage medium, which are used for solving the problems of reliability and poor effectiveness of an emergency control decision in a power grid operation mode with strong uncertainty in the prior art.

In a first aspect, the present invention discloses an emergency control decision system comprising:

the operation mode data processing subsystem is used for obtaining a file for safety and stability analysis according to the operation mode of the power grid and the state of the emergency control device, wherein the file comprises a fault table file with a mapping relation with an expected fault management table;

the current value policy identification subsystem is used for updating the current value policy state S of the corresponding section moment in the expected fault management table according to the current value policy of the expected fault ₁ And failure check priority L ₁ ；

An emergency policy checking subsystem for checking the priority L according to the faults ₁ The static safety analysis and the transient safety analysis which account for the current value policy are carried out on faults, and the safety check state S of the corresponding section moment in the expected fault management table is updated ₂ Failure optimization priority L ₂ And the security and stability risk R of the current value strategy;

an emergency control strategy optimization subsystem for optimizing priority L according to faults ₂ The high-low order of (1) and the magnitude order of the on-value policy safety stability risk R, the policy meeting the urgent control optimization target is searched by considering the on-value policy, and the policy optimization state S of the corresponding section moment in the expected fault management table is updated ₃ ；

An emergency control strategy updating subsystem for updating the strategy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device.

Further, the current value policy state S of the corresponding section moment in the expected fault management table is updated according to the current value policy of the expected fault ₁ And failure check priority L ₁ Comprising the following steps:

if the fault f at the section moment t is not matched with the current value strategy, setting the current value strategy state S ₁ = -1, malfunctionChecking priority L ₁ =high;

if the fault f at the section moment t is matched with the current value strategy but the controllable quantity of the related emergency control device E is insufficient, setting the current value strategy state S ₁ =0, failure check priority L ₁ In =medium;

if the fault f at the section moment t is matched with the current value strategy and the associated emergency control device E has enough controllable quantity, setting the current value strategy state S ₁ =0, failure check priority L ₁ =low.

Further, the static security analysis and the transient security analysis which account for the current value policy are carried out on the faults, and the security check state S of the corresponding section moment in the expected fault management table is updated ₂ And failure optimization priority L ₂ Comprising the following steps:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, setting the fail-safe check state S ₂ = -1, failure optimization priority L ₂ =high;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal Put the fail-safe check state S ₂ =0, failure optimization priority L ₂ In =wherein ε _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Put the fail-safe check state S ₂ =1, failure optimization priority L ₂ =low.

Further, performing static security analysis and transient security analysis for the fault in consideration of the current value policy, and updating the current value policy security stability risk R includes:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, then the risk of security and stability of the value policy r=ρ _t,f C _t,f ；

Wherein ρ is _t,f C is the probability of failure f at section time t _t,f The cost of adding control measures for guaranteeing the safety and stability of the power grid after the fault f occurs at the section moment t and the emergency control current value strategy acts correctly;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(ε _goal -η _t,f )；

Wherein alpha is _f Control cost function epsilon for unit safety stability margin after fault f at section moment t _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(η _t,f -ε _goal )。

Further, the searching for a policy meeting an urgent control optimization objective includes:

search fault optimization priority L ₂ Equal to a high predictive failure emergency control strategy, failure optimization priority L ₂ The strategy is high, and the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from large to small;

search fault optimization priority L ₂ Equal to the expected failure emergency control strategy in the middle, failure optimization priority L ₂ The strategy is that the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from big to small;

search fault optimization priority L ₂ Equal to low expected failure emergency control strategy, failure optimization priority L ₂ Are low strategies for searching emergency control optimization targets according to the order of the security and stability risks R of the current strategy from large to small.

Further, the setting method of the emergency control optimization target is as follows:

setting an emergency control strategy to optimize a safety stability margin target value epsilon _goal ＝ε ₀ ；

Emergency control current value strategy of fault f at section time t is a, and section time t is ₁ The fault f emergency control current value strategy is a ₁ Time t of last section ₀ The fault f emergency control current value strategy is a ₀ Estimating the section time t ₁ Failure f ₁ Using emergency control strategy a ₀ Safety and stability margin of time-grid

If it is

Epsilon _goal Remain unchanged; if->

Update->

Safety and stability margin of the emergency control optimization target

Further, updating the strategy optimization state S corresponding to the section time in the expected fault management table ₃ Comprising the following steps:

after generating a file for safety and stability analysis, setting a strategy optimization state S of all faults ₃ Is-1;

setting a fault policy optimization state S of searching for an emergency control optimization target policy ₃ Is 0;

setting a fault strategy optimization state S of the completed emergency control optimization target strategy ₃ 1.

Further, the policy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of an emergency control deviceComprising the following steps:

if the policy state S is the same as the current value ₁ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the security check state S ₂ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the strategy optimizes state S ₃ And if the value of the emergency control current strategy is changed from 0 to 1, the emergency control optimization strategy is issued to the emergency control device, and the emergency control current strategy is switched to the emergency control optimization strategy.

Further, the expected fault management table comprises a section time T, a fault F, an associated emergency control device E and an on-value policy state S ₁ Secure check state S ₂ Policy optimization state S ₃ Failure check priority L ₁ Failure optimization priority L ₂ And security and stability risk R of the current value policy.

In a second aspect, the invention discloses an emergency control decision method, comprising:

obtaining a file for safety and stability analysis according to the running mode of the power grid and the state of the emergency control device, wherein the file comprises a fault table file with a mapping relation with an expected fault management table;

Updating the current value policy state S of the corresponding section moment in the expected fault management table according to the current value policy of the expected fault ₁ And failure check priority L ₁ ；

According to failure check priority L ₁ The static safety analysis and the transient safety analysis which account for the current value policy are carried out on faults, and the safety check state S of the corresponding section moment in the expected fault management table is updated ₂ Failure optimization priority L ₂ And the security and stability risk R of the current value strategy;

optimizing priority L by failure ₂ The high-low order of (1) and the magnitude order of the on-value policy safety stability risk R, the policy meeting the urgent control optimization target is searched by considering the on-value policy, and the policy optimization state S of the corresponding section moment in the expected fault management table is updated ₃ ；

Policy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device.

Further, the current value policy state S of the corresponding section moment in the expected fault management table is updated according to the current value policy of the expected fault ₁ And failure check priority L ₁ Comprising the following steps:

if the fault f at the section moment t is not matched with the current value strategy, setting the current value strategy state S ₁ = -1, failure check priority L ₁ =high;

If the fault f at the section moment t is matched with the current value strategy but the controllable quantity of the related emergency control device E is insufficient, setting the current value strategy state S ₁ =0, failure check priority L ₁ In =medium;

if the fault f at the section moment t is matched with the current value strategy and the associated emergency control device E has enough controllable quantity, setting the current value strategy state S ₁ =0, failure check priority L ₁ =low.

Further, the static security analysis and the transient security analysis which account for the current value policy are carried out on the faults, and the security check state S of the corresponding section moment in the expected fault management table is updated ₂ And failure optimization priority L ₂ Comprising the following steps:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, setting the fail-safe check state S ₂ = -1, failure optimization priority L ₂ =high;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal Put the fail-safe check state S ₂ =0, failure optimization priority L ₂ In =wherein ε _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Put the fail-safe check state S ₂ =1, failure optimization priorityL ₂ =low.

Further, performing static security analysis and transient security analysis for the fault in consideration of the current value policy, and updating the current value policy security stability risk R includes:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, then the risk of security and stability of the value policy r=ρ _t,f C _t,f ；

Wherein ρ is _t,f C is the probability of failure f at section time t _t,f The cost of adding control measures for guaranteeing the safety and stability of the power grid after the fault f occurs at the section moment t and the emergency control current value strategy acts correctly;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(ε _goal -η _t,f )；

Wherein alpha is _f Control cost function epsilon for unit safety stability margin after fault f at section moment t _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(η _t,f -ε _goal )。

Further, the searching for a policy meeting an urgent control optimization objective includes:

Search fault optimization priority L ₂ Equal to a high predictive failure emergency control strategy, failure optimization priority L ₂ The strategy is high, and the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from large to small;

search fault optimization priority L ₂ Equal to the expected failure emergency control strategy in the middle, failure optimization priority L ₂ Are all in accordance with the current value policyA strategy for determining the risk R and searching an emergency control optimization target from large to small sequentially;

search fault optimization priority L ₂ Equal to low expected failure emergency control strategy, failure optimization priority L ₂ Are low strategies for searching emergency control optimization targets according to the order of the security and stability risks R of the current strategy from large to small.

Further, the setting method of the emergency control optimization target is as follows:

setting an emergency control strategy to optimize a safety stability margin target value epsilon _goal ＝ε ₀ ；

Emergency control current value strategy of fault f at section time t is a, and section time t is ₁ The fault f emergency control current value strategy is a ₁ Time t of last section ₀ The fault f emergency control current value strategy is a ₀ Estimating the section time t ₁ Failure f ₁ Using emergency control strategy a ₀ Safety and stability margin of time-grid

If it is

Epsilon _goal Remain unchanged; if- >

Update->

/>

Safety and stability margin of the emergency control optimization target

Further, updating the strategy optimization state S corresponding to the section time in the expected fault management table ₃ Comprising the following steps:

after generating a file for safety and stability analysis, setting a strategy optimization state S of all faults ₃ Is-1;

setting a fault policy optimization state S of searching for an emergency control optimization target policy ₃ Is 0;

setting a fault strategy optimization state S of the completed emergency control optimization target strategy ₃ 1.

Further, the policy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device includes:

if the policy state S is the same as the current value ₁ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the security check state S ₂ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the strategy optimizes state S ₃ And if the value of the emergency control current strategy is changed from 0 to 1, the emergency control optimization strategy is issued to the emergency control device, and the emergency control current strategy is switched to the emergency control optimization strategy.

In a third aspect, the present invention discloses a computer readable storage medium having stored thereon a computer program which when executed by a processor realizes the steps of the method according to any of the second aspects.

In a fourth aspect, the invention discloses an electronic device comprising a processor and a storage medium;

the storage medium is used for storing instructions;

the processor is configured to operate in accordance with the instructions to perform the steps of the method of any of the second aspects.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:

according to the technical scheme, the embodiment of the invention has at least the following effects: according to the method, the on-duty strategy identification subsystem is used for identifying the on-duty strategy, the emergency strategy checking subsystem is used for checking faults to conduct static safety analysis and transient safety analysis of the on-duty strategy, checking whether the on-duty strategy meets the requirement of safe and stable operation of a power grid or not, the emergency control strategy optimizing subsystem comprehensively considers the adaptability and the safety and stability risk of the on-duty strategy to obtain the strategy meeting the emergency control optimizing target, and the emergency control strategy updating subsystem is used for updating the on-duty strategy in the emergency control device according to the on-duty strategy state, the safety checking state and the strategy optimizing state; the coordinated operation of the five subsystems rapidly identifies the conditions of mismatching and inadaptation of the current value strategy of the emergency control, and ensures the reliability and effectiveness of the emergency control decision in the power grid operation mode with strong uncertainty; the method ensures that the emergency control strategy can adapt to the rapid and random change of the power grid operation mode, and supports the safe, stable and economic operation of the novel power system.

Drawings

FIG. 1 is a schematic diagram of a decision making system according to the present invention;

FIG. 2 is a flow chart of the decision making method of the present invention.

Detailed Description

The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

Example 1

In order to ensure that an emergency control strategy can adapt to the rapid change of the operation mode of a power grid and support the safe, stable and economic operation of a novel power system, the invention provides an emergency control decision system adapting to the uncertainty of the operation mode of the power grid. The system adopts five parallel subsystem architectures of an operation mode data processing subsystem, an on-value strategy identification subsystem, an emergency strategy checking subsystem, an emergency control strategy optimizing subsystem and an emergency control strategy updating subsystem, wherein the operation mode data processing subsystem continuously tracks the change of the operation mode of a power grid and the state of an emergency control device, updates data files for identifying, checking and optimizing the emergency control strategy in real time, the on-value strategy identification subsystem identifies the emergency control on-value strategy according to the latest operation mode of the power grid, the emergency strategy checking subsystem checks whether the emergency control on-value strategy meets the requirement of safe and stable operation of the power grid, the emergency control strategy optimizing subsystem comprehensively considers the adaptability and the safe and stable risk of the on-value strategy to optimize the emergency control strategy, dynamically adjusts an emergency control optimizing target according to the adaptability of the on-value strategy, and the emergency control strategy updating subsystem timely switches on-line/off-line strategies and rapidly updates the on-line strategies in the emergency control device according to the on-value strategy state, the safety checking state and the strategy optimizing state. The coordinated operation of the five subsystems rapidly identifies mismatching and inadaptation of the current value strategy of the emergency control, the emergency control strategy is orderly optimized according to the safety and stability risks of the current value strategy, and the adaptability of the emergency control decision system in the power grid operation mode with strong uncertainty and the emergency control device state is ensured.

The invention will now be illustrated by means of specific examples.

As shown in fig. 1, an emergency control decision system includes an operation mode data processing subsystem, a current value policy identification subsystem, an emergency policy verification subsystem, an emergency control policy optimization subsystem, and an emergency control policy update subsystem.

The operation mode data processing subsystem is used for obtaining a power flow file, a stability file, a fault table file and a control measure space file for safety and stability analysis according to the operation mode of the power grid and the state of the emergency control device, wherein the fault table file and the expected fault management table have a mapping relation.

In the present application, the expected failure management table includes a cross-section time T, a failure F, an associated emergency control device E, and an on-value policy state S ₁ Secure check state S ₂ Policy optimization state S ₃ Failure check priority L ₁ Failure optimization priority L ₂ And security and stability risk R of the current value policy.

The on-time value strategy identification subsystem is used for updating the on-time value strategy state S of the corresponding section moment in the expected fault management table according to the on-time value strategy of the expected fault whether the control quantity requirement is met or not and under the condition that the control quantity requirement is met ₁ And failure check priority L ₁ 。

In the system, a fault current policy state S ₁ And failure check priority L ₁ The setting method specifically comprises the following steps:

1) If the section time ttrop f does not match the current value policy,then set the value policy state S ₁ = -1, failure check priority L ₁ =high;

2) If the fault f at the section moment t is matched with the current value strategy but the controllable quantity of the related emergency control device E is insufficient, setting the current value strategy state S ₁ =0, failure check priority L ₁ In =medium;

3) If the fault f at the section moment t is matched to the current value strategy and the associated emergency control device E has enough controllable quantity, setting the current value strategy state S ₁ =0, failure check priority L ₁ =low.

Emergency policy checking subsystem for checking priority L according to faults ₁ The static safety analysis and the transient safety analysis which account for the current value policy are carried out on faults, whether the safety and stability requirements are met is judged, and under the condition that the safety and stability requirements are met, the safety check state S of the corresponding section moment in the expected fault management table is updated ₂ Failure optimization priority L ₂ And the security and stability risk R of the current value strategy.

In the system, the state S is checked safely ₂ And failure optimization priority L ₂ The setting method comprises the following specific steps:

1) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, setting the fail-safe check state S ₂ = -1, failure optimization priority L ₂ =high;

2) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal ，ε _goal Optimizing the safety and stability margin target value for the emergency control strategy, and setting a fault safety check state S ₂ =0, failure optimization priority L ₂ In =medium;

3) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Put the fail-safe check state S ₂ =1, failure optimization priority L ₂ =low.

In the system, the method for calculating the security and stability risk R of the on-duty strategy comprises the following specific steps:

1) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f If the value policy security stability risk is smaller than 0, the calculation formula of the current value policy security stability risk is as follows:

R＝ρ _t,f C _t,f

in the above, ρ _t,f C is the probability of failure f at section time t _t,f And (3) the cost of adding control measures for ensuring the safety and stability of the power grid after the fault f occurs at the section moment t and the emergency control current value strategy acts correctly.

2) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal And when the value policy security stability risk calculation formula is:

R＝ρ _t,f ×α _f (η _t,f )×(ε _goal -η _t,f )

in the above, alpha _f And controlling a cost function for the unit safety stability margin after the fault f occurs, and obtaining the unit safety stability margin by fitting historical data.

3) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal And when the value policy security stability risk calculation formula is:

R＝ρ _t,f ×α _f (η _t,f )×(η _t,f -ε _goal )。

the emergency control strategy optimization subsystem is used for optimizing the priority L according to the faults ₂ The high-low order of (1) and the magnitude order of the on-value policy safety stability risk R, the policy meeting the urgent control optimization target is searched by considering the on-value policy, and the policy optimization state S of the corresponding section moment in the expected fault management table is updated ₃ 。

In the system, the strategy setting method for the emergency control optimization target comprises the following specific steps:

1) Search optimization priority L ₂ Equal to high predictive failure emergency control strategy, failure optimization priorityStage L ₂ Are all high strategies for searching emergency control optimization targets according to the order of the security and stability risks of the current strategy from large to small.

2) Search optimization priority L ₂ Equal to the expected failure emergency control strategy in the middle, failure optimization priority L ₂ The method is a strategy for searching an emergency control optimization target according to the order of the security and stability risks of the current strategy from large to small.

3) Search optimization priority L ₂ Equal to low expected failure emergency control strategy, failure optimization priority L ₂ Are low strategies for searching emergency control optimization targets according to the order of the security and stability risks of the current strategy from large to small.

In the system, the emergency control optimization target setting method comprises the following specific steps:

1) According to expert experience and power grid safe and stable operation requirements, setting an emergency control strategy to optimize a safe and stable margin target value epsilon _goal ＝ε ₀ ；

2) Emergency control of fault f at section time t when the strategy is a ₁ The fault f emergency control current value strategy is a ₁ Time t of last section ₀ The fault f emergency control current value strategy is a ₀ Estimating the section time t ₁ Failure f ₁ Using emergency control strategy a ₀ Safety and stability margin of the time grid is recorded as

3) If it is

Epsilon _goal Remain unchanged;

4) If it is

Update->

5) Emergency control strategy optimizationIs targeted at

In the present system, policy optimizes state S ₃ The setting method comprises the following specific steps:

1) After the section time is updated, the section time updating refers to that the operation mode processing subsystem generates a file for safety and stability analysis and sets a strategy optimization state S of all faults ₃ Is-1;

2) Setting a fault policy optimization state S of searching for an emergency control optimization policy ₃ Is 0;

3) Setting a fault strategy optimization state S of the completed emergency control optimization strategy ₃ 1.

An emergency control strategy updating subsystem for updating the strategy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device.

In the system, the emergency control strategy updating method comprises the following specific steps:

1) After updating the section time, if the current value is the policy state S ₁ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

2) After the emergency control checking is finished, if the safety checking state S ₂ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

3) After the emergency control optimization is completed, the fault strategy optimization state S ₃ And if the value of the emergency control current strategy is changed from 0 to 1, the emergency control optimization strategy is issued to the emergency control device, and the emergency control current strategy is switched to the emergency control optimization strategy.

The method comprehensively considers the enforceability and the adaptability of the emergency control current value strategy, preferentially checks the adaptability of the emergency control current value strategy with insufficient enforceability, performs emergency control strategy optimization search classification on the expected faults according to the adaptability, performs emergency control strategy optimization search on the same-level optimization priority according to the risk of the emergency control current value strategy, realizes the rapid sensing of the conditions of mismatching, failure and the like of the emergency control current value strategy, ensures that the emergency control strategy can adapt to the rapid and random change of the power grid operation mode, and supports the safe, stable and economic operation of the novel power system.

The operation mode data processing subsystem continuously tracks the change of the operation mode of the power grid and the state of the emergency control device, updates the data file for identifying, checking and optimizing the emergency control strategy in real time, the current value strategy identifying subsystem identifies the emergency control current value strategy according to the latest operation mode of the power grid, the emergency strategy checking subsystem checks whether the emergency control current value strategy meets the requirement of safe and stable operation of the power grid, the emergency control strategy optimizing subsystem comprehensively considers the adaptability of the current value strategy and the safety and stability risk optimizing emergency control strategy, dynamically adjusts the emergency control optimizing target according to the adaptability of the current value strategy, and the emergency control strategy updating subsystem timely switches the online/offline strategy and rapidly updates the online strategy in the emergency control device according to the current value strategy state, the safety checking state and the strategy optimizing state. The coordination operation of the five subsystems rapidly identifies the conditions of mismatching and inadaptation of the current value strategy of the emergency control, the emergency control strategy is orderly optimized according to the safety and stability risks of the current value strategy, and the reliability and effectiveness of the emergency control decision under the power grid operation mode with strong uncertainty are ensured.

Example 2

Based on the inventive concept of embodiment 1, this embodiment also provides a medium emergency control decision method, as shown in fig. 2, including the following steps: obtaining a file for safety and stability analysis according to the running mode of the power grid and the state of the emergency control device, wherein the file comprises a fault table file with a mapping relation with an expected fault management table; updating the current value policy state S of the corresponding section moment in the expected fault management table according to the current value policy of the expected fault ₁ And failure check priority L ₁ The method comprises the steps of carrying out a first treatment on the surface of the According to failure check priority L ₁ The static safety analysis and the transient safety analysis which account for the current value policy are carried out on faults, and the safety check state S of the corresponding section moment in the expected fault management table is updated ₂ Failure optimization priority L ₂ And current value policyA safety and stability risk R; optimizing priority L by failure ₂ The high-low order of (1) and the magnitude order of the on-value policy safety stability risk R, the policy meeting the urgent control optimization target is searched by considering the on-value policy, and the policy optimization state S of the corresponding section moment in the expected fault management table is updated ₃ The method comprises the steps of carrying out a first treatment on the surface of the Policy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device.

In the present application, the expected failure management table includes a cross-section time T, a failure F, an associated emergency control device E, and an on-value policy state S ₁ Secure check state S ₂ Policy optimization state S ₃ Failure check priority L ₁ Failure optimization priority L ₂ And security and stability risk R of the current value policy.

In a further method, a fault current policy state S ₁ And failure check priority L ₁ The setting method specifically comprises the following steps:

1) If the fault f at the section moment t is not matched with the current value strategy, setting the current value strategy state S ₁ = -1, failure check priority L ₁ =high;

2) If the fault f at the section moment t is matched with the current value strategy but the controllable quantity of the related emergency control device E is insufficient, setting the current value strategy state S ₁ =0, failure check priority L ₁ In =medium;

3) If the fault f at the section moment t is matched to the current value strategy and the associated emergency control device E has enough controllable quantity, setting the current value strategy state S ₁ =0, failure check priority L ₁ =low.

In a further method, the state S is checked safely ₂ And failure optimization priority L ₂ The setting method comprises the following specific steps:

1) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, setting the fail-safe check state S ₂ = -1, failure optimization priority L ₂ =high;

2) Emergency control of fault f at section time tAfter slight action, the safety and stability margin eta of the power grid _t,f 0 or more and less than ε _goal ，ε _goal Optimizing the safety and stability margin target value for the emergency control strategy, and setting a fault safety check state S ₂ =0, failure optimization priority L ₂ In =medium;

3) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Put the fail-safe check state S ₂ =1, failure optimization priority L ₂ =low.

In a further method, the method for calculating the security and stability risk R of the on-duty strategy comprises the following specific steps:

1) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f If the value policy security stability risk is smaller than 0, the calculation formula of the current value policy security stability risk is as follows:

R＝ρ _t,f C _t,f

in the above, ρ _t,f C is the probability of failure f at section time t _t,f And (3) the cost of adding control measures for ensuring the safety and stability of the power grid after the fault f occurs at the section moment t and the emergency control current value strategy acts correctly.

2) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal And when the value policy security stability risk calculation formula is:

R＝ρ _t,f ×α _f (η _t,f )×(ε _goal -η _t,f )

in the above, alpha _f And controlling a cost function for the unit safety stability margin after the fault f occurs, and obtaining the unit safety stability margin by fitting historical data.

3) If the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal And when the value policy security stability risk calculation formula is:

R＝ρ _t,f ×α _f (η _t,f )×(η _t,f -ε _goal )。

in a further method, the method for setting the strategy of the emergency control optimization target comprises the following specific steps:

1) Search optimization priority L ₂ Equal to a high predictive failure emergency control strategy, failure optimization priority L ₂ Are all high strategies for searching emergency control optimization targets according to the order of the security and stability risks of the current strategy from large to small.

2) Search optimization priority L ₂ Equal to the expected failure emergency control strategy in the middle, failure optimization priority L ₂ The method is a strategy for searching an emergency control optimization target according to the order of the security and stability risks of the current strategy from large to small.

3) Search optimization priority L ₂ Equal to low expected failure emergency control strategy, failure optimization priority L ₂ Are low strategies for searching emergency control optimization targets according to the order of the security and stability risks of the current strategy from large to small.

In a further method, the emergency control optimization target setting method comprises the following specific steps:

1) According to expert experience and power grid safe and stable operation requirements, setting an emergency control strategy to optimize a safe and stable margin target value epsilon _goal ＝ε ₀ ；

2) Emergency control of fault f at section time t when the strategy is a ₁ The fault f emergency control current value strategy is a ₁ Time t of last section ₀ The fault f emergency control current value strategy is a ₀ Estimating the section time t ₁ Failure f ₁ Using emergency control strategy a ₀ Safety and stability margin of the time grid is recorded as

3) If it is

Epsilon _goal Remain unchanged;

4) If it is

Update->

5) The safety and stability margin for emergency control strategy optimization is targeted to

In a further approach, the policy optimizes state S ₃ The setting method comprises the following specific steps:

1) After the section time is updated, the section time updating refers to that the operation mode processing subsystem generates a file for safety and stability analysis and sets a strategy optimization state S of all faults ₃ Is-1;

2) Setting a fault policy optimization state S of searching for an emergency control optimization policy ₃ Is 0;

3) Setting a fault strategy optimization state S of the completed emergency control optimization strategy ₃ 1.

In a further method, the emergency control strategy updating method comprises the following specific steps:

1) After updating the section time, if the current value is the policy state S ₁ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

2) After the emergency control checking is finished, if the safety checking state S ₂ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

3) After the emergency control optimization is completed, the fault strategy optimization state S ₃ And if the value of the emergency control current strategy is changed from 0 to 1, the emergency control optimization strategy is issued to the emergency control device, and the emergency control current strategy is switched to the emergency control optimization strategy.

The method comprehensively considers the enforceability and the adaptability of the emergency control current value strategy, preferentially checks the adaptability of the emergency control current value strategy with insufficient enforceability, performs emergency control strategy optimization search classification on the expected faults according to the adaptability, performs emergency control strategy optimization search on the same-level optimization priority according to the risk of the emergency control current value strategy, realizes the rapid sensing of the conditions of mismatching, failure and the like of the emergency control current value strategy, ensures that the emergency control strategy can adapt to the rapid and random change of the power grid operation mode, and supports the safe, stable and economic operation of the novel power system.

Example 3

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 embodiment of the application also provides electronic equipment, which in the embodiment of the application can be a tablet computer, a smart phone, a personal digital assistant and the like.

The electronic device may include: memory, processor, communication interface, and communication bus for enabling connected communication of these components.

The memory is used for storing all model data, various data such as computer program instructions corresponding to the emergency decision control method and the emergency decision control system provided by the embodiment of the application, wherein the memory can be Random Access Memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable read-only memory (EPROM) and the like.

The processor is configured to execute the emergency decision control method provided in the embodiment of the present application when reading and executing the computer program instructions corresponding to the emergency decision control method stored in the memory.

The processor may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; but may also be a Digital Signal Processor (DSP), discrete gate or transistor logic, discrete hardware components.

It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.

Claims (19)

1. An emergency control decision making system, comprising:

the operation mode data processing subsystem is used for obtaining a file for safety and stability analysis according to the operation mode of the power grid and the state of the emergency control device, wherein the file comprises a fault table file with a mapping relation with an expected fault management table;

the current value policy identification subsystem is used for updating the current value policy state S of the corresponding section moment in the expected fault management table according to the current value policy of the expected fault ₁ And failure check priority L ₁ ；

An emergency policy checking subsystem for checking the priority L according to the faults ₁ The static safety analysis and the transient safety analysis which account for the current value policy are carried out on faults, and the safety check state S of the corresponding section moment in the expected fault management table is updated ₂ Failure optimization priority L ₂ And the security and stability risk R of the current value strategy;

an emergency control strategy optimization subsystem for optimizing priority L according to faults ₂ The high-low order of (1) and the magnitude order of the on-value policy safety stability risk R, the policy meeting the urgent control optimization target is searched by considering the on-value policy, and the policy optimization state S of the corresponding section moment in the expected fault management table is updated ₃ ；

An emergency control strategy updating subsystem for updating the strategy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device.

2. The emergency control decision system according to claim 1, wherein the current value policy state S of the corresponding section time in the expected failure management table is updated according to the current value policy of the expected failure ₁ And failure check priority L ₁ Comprising the following steps:

if the fault f at the section moment t is not matched with the current value strategy, setting the current value strategy state S ₁ = -1, failure check priority L ₁ =high;

if the fault f at the section moment t is matched with the current value strategy, but the controllable quantity of the related emergency control device E is not controlledFoot, set the value policy state S ₁ =0, failure check priority L ₁ In =medium;

if the fault f at the section moment t is matched with the current value strategy and the associated emergency control device E has enough controllable quantity, setting the current value strategy state S ₁ =0, failure check priority L ₁ =low.

3. The emergency control decision system according to claim 1, wherein the static security analysis and the transient security analysis of the fault taking account of the current value policy update the security check state S of the corresponding section time in the expected fault management table ₂ And failure optimization priority L ₂ Comprising the following steps:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, setting the fail-safe check state S ₂ = -1, failure optimization priority L ₂ =high;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal Put the fail-safe check state S ₂ =0, failure optimization priority L ₂ In =wherein ε _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Put the fail-safe check state S ₂ =1, failure optimization priority L ₂ =low.

4. The emergency control decision system of claim 1, wherein the performing of static safety analysis and transient safety analysis on the fault to account for the on-value policy, updating the on-value policy safety and stability risk R comprises:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, then the risk of security and stability of the value policy r=ρ _t,f C _t,f ；

Wherein ρ is _t,f C is the probability of failure f at section time t _t,f The cost of adding control measures for guaranteeing the safety and stability of the power grid after the fault f occurs at the section moment t and the emergency control current value strategy acts correctly;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _g o _al Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(ε _goal -η _t,f )；

Wherein alpha is _f Control cost function epsilon for unit safety stability margin after fault f at section moment t _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _g o _al Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(η _t,f -ε _goal )。

5. The emergency control decision system of claim 1, wherein the searching for a policy that meets an emergency control optimization objective comprises:

search fault optimization priority L ₂ Equal to a high predictive failure emergency control strategy, failure optimization priority L ₂ The strategy is high, and the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from large to small;

search fault optimization priority L ₂ Equal to the expected failure emergency control strategy in the middle, failure optimization priority L ₂ The strategy is that the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from big to small;

search fault optimization priority L ₂ Equal to low expected failure emergency control strategy, failure optimization priority L ₂ All are low and the security and stability risk R is searched from large to small according to the current value strategyStrategy for emergency control optimization objective.

6. The emergency control decision system of claim 5, wherein the method for setting the emergency control optimization objective is:

setting an emergency control strategy to optimize a safety stability margin target value epsilon _goal ＝ε ₀ ；

Emergency control current value strategy of fault f at section time t is a, and section time t is ₁ The fault f emergency control current value strategy is a ₁ Time t of last section ₀ The fault f emergency control current value strategy is a ₀ Estimating the section time t ₁ Failure f ₁ Using emergency control strategy a ₀ Safety and stability margin of time-grid

If it is

Epsilon _goal Remain unchanged; if->

Update->

Safety and stability margin of the emergency control optimization target

7. The emergency control decision system of claim 1, wherein the policy optimization state S for the corresponding cross-section time in the expected failure management table is updated ₃ Comprising the following steps:

after generating a file for safety and stability analysis, setting a strategy optimization state S of all faults ₃ Is-1;

setting a fault policy optimization state S of searching for an emergency control optimization target policy ₃ Is 0;

setting a fault strategy optimization state S of the completed emergency control optimization target strategy ₃ 1.

8. The emergency control decision system of claim 1, wherein said policy state S is based on an on-value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device includes:

if the policy state S is the same as the current value ₁ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the security check state S ₂ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the strategy optimizes state S ₃ And if the value of the emergency control current strategy is changed from 0 to 1, the emergency control optimization strategy is issued to the emergency control device, and the emergency control current strategy is switched to the emergency control optimization strategy.

9. The emergency control decision system of claim 1, wherein the expected failure management table includes a cross-sectional time T, a failure F, an associated emergency control device E, an on-value policy state S ₁ Secure check state S ₂ Policy optimization state S ₃ Failure check priority L ₁ Failure optimization priority L ₂ And security and stability risk R of the current value policy.

10. An emergency control decision method, comprising:

obtaining a file for safety and stability analysis according to the running mode of the power grid and the state of the emergency control device, wherein the file comprises a fault table file with a mapping relation with an expected fault management table;

updating the current value policy state S of the corresponding section moment in the expected fault management table according to the current value policy of the expected fault ₁ And failure check priority L ₁ ；

According to failure check priority L ₁ The static safety analysis and the transient safety analysis which account for the current value policy are carried out on faults, and the safety check state S of the corresponding section moment in the expected fault management table is updated ₂ Failure optimization priority L ₂ And the security and stability risk R of the current value strategy;

optimizing priority L by failure ₂ The high-low order of (1) and the magnitude order of the on-value policy safety stability risk R, the policy meeting the urgent control optimization target is searched by considering the on-value policy, and the policy optimization state S of the corresponding section moment in the expected fault management table is updated ₃ ；

Policy state S according to the current value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device.

11. The emergency control decision method of claim 10, wherein the current value policy state S of the corresponding section time in the expected failure management table is updated according to the current value policy of the expected failure ₁ And failure check priority L ₁ Comprising the following steps:

if the fault f at the section moment t is not matched with the current value strategy, setting the current value strategy state S ₁ = -1, failure check priority L ₁ =high;

if the fault f at the section moment t is matched with the current value strategy but the controllable quantity of the related emergency control device E is insufficient, setting the current value strategy state S ₁ =0, failure check priority L ₁ In =medium;

if the fault f at the section moment t is matched with the current value strategy and the associated emergency control device E has enough controllable quantity, setting the current value strategy state S ₁ =0, failure check priority L ₁ =low.

12. The emergency control decision method of claim 10, wherein the static security analysis and the transient security analysis of the fault taking into account the current value policy update security check of the corresponding section time in the expected fault management tableState S ₂ And failure optimization priority L ₂ Comprising the following steps:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, setting the fail-safe check state S ₂ = -1, failure optimization priority L ₂ =high;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _goal Put the fail-safe check state S ₂ =0, failure optimization priority L ₂ In =wherein ε _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _goal Put the fail-safe check state S ₂ =1, failure optimization priority L ₂ =low.

13. The emergency control decision method of claim 10, wherein the performing of a static security analysis and a transient security analysis on the fault accounting for the on-value policy, updating the on-value policy security stability risk R comprises:

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Less than 0, then the risk of security and stability of the value policy r=ρ _t,f C _t,f ；

Wherein ρ is _t,f C is the probability of failure f at section time t _t,f The cost of adding control measures for guaranteeing the safety and stability of the power grid after the fault f occurs at the section moment t and the emergency control current value strategy acts correctly;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f 0 or more and less than ε _g o _al Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(ε _goal -η _t,f )；

Wherein alpha is _f Is of a cross section The unit safety stability margin controls the cost function epsilon after the fault f occurs at the moment t _goal Optimizing a safety stability margin target value for an emergency control strategy;

if the fault f emergency control of the section moment t acts in the current value strategy, the safety and stability margin eta of the power grid is ensured _t,f Epsilon is greater than or equal to _g o _al Then when the value policy security stabilization risk r=ρ _t,f ×α _f (η _t,f )×(η _t,f -ε _goal )。

14. The emergency control decision method of claim 10, wherein the searching for a policy that meets an emergency control optimization objective comprises:

search fault optimization priority L ₂ Equal to a high predictive failure emergency control strategy, failure optimization priority L ₂ The strategy is high, and the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from large to small;

search fault optimization priority L ₂ Equal to the expected failure emergency control strategy in the middle, failure optimization priority L ₂ The strategy is that the emergency control optimization target is searched according to the order of the security and stability risk R of the current strategy from big to small;

search fault optimization priority L ₂ Equal to low expected failure emergency control strategy, failure optimization priority L ₂ Are low strategies for searching emergency control optimization targets according to the order of the security and stability risks R of the current strategy from large to small.

15. The emergency control decision method according to claim 14, wherein the setting method of the emergency control optimization target is:

setting an emergency control strategy to optimize a safety stability margin target value epsilon _goal ＝ε ₀ ；

Emergency control current value strategy of fault f at section time t is a, and section time t is ₁ The fault f emergency control current value strategy is a ₁ Time t of last section ₀ The fault f emergency control current value strategy is a ₀ Estimating the section time t ₁ Failure f ₁ Using emergency control strategy a ₀ Safety and stability margin of time-grid

If it is

Epsilon _goal Remain unchanged; if->

Update->

Safety and stability margin of the emergency control optimization target

16. The emergency control decision method of claim 10, wherein the policy optimization state S corresponding to the cross-section time in the expected failure management table is updated ₃ Comprising the following steps:

after generating a file for safety and stability analysis, setting a strategy optimization state S of all faults ₃ Is-1;

setting a fault policy optimization state S of searching for an emergency control optimization target policy ₃ Is 0;

setting a fault strategy optimization state S of the completed emergency control optimization target strategy ₃ 1.

17. The emergency control decision method of claim 10, wherein said policy state S is based on an on-time value ₁ Secure check state S ₂ And policy optimization state S ₃ Updating the current value policy of the emergency control device includes:

if the policy state S is the same as the current value ₁ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the security check state S ₂ If the value is-1 or 0, switching the emergency control current value strategy to be an offline strategy;

if the strategy optimizes state S ₃ And if the value of the emergency control current strategy is changed from 0 to 1, the emergency control optimization strategy is issued to the emergency control device, and the emergency control current strategy is switched to the emergency control optimization strategy.

18. Computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any of claims 10-17.

19. An electronic device, comprising a processor and a storage medium;

the storage medium is used for storing instructions;

the processor being operative according to the instructions to perform the steps of the method according to any one of claims 10-17.

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