CN114626672A - Stability control device abnormal influence evaluation method and system, storage medium and computing equipment - Google Patents

Stability control device abnormal influence evaluation method and system, storage medium and computing equipment Download PDF

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CN114626672A
CN114626672A CN202210105002.1A CN202210105002A CN114626672A CN 114626672 A CN114626672 A CN 114626672A CN 202210105002 A CN202210105002 A CN 202210105002A CN 114626672 A CN114626672 A CN 114626672A
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control device
expected
abnormal
stability control
influence
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王胜明
徐泰山
项震
顾健辉
赵子涵
王阳
孙才峰
卢耀华
郭剑
邵伟
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State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
Nari Technology Co Ltd
State Grid Electric Power Research Institute
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State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
Nari Technology Co Ltd
State Grid Electric Power Research Institute
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Abstract

The invention discloses a method, a system, a storage medium and a computing device for evaluating the abnormal influence of a stability control device, which are used for acquiring an expected failure set of a power grid based on a control strategy model and an expected abnormal combination, identifying an expected failure subset losing defense and an expected failure subset continuing defense in the expected failure set of the power grid after the abnormal combination occurs, acquiring a current value strategy of each expected failure in the expected failure subset continuing defense, counting the variable quantity and the implementable evaluation state of the current value strategy, further determining the safety level of the influence of the abnormal combination on the control function of the stability control device, and providing technical support for the operation abnormal handling and maintenance arrangement of the stability control device.

Description

Stability control device abnormal influence evaluation method and system, storage medium and computing equipment
Technical Field
The invention relates to a stability control device abnormal influence evaluation method, a stability control device abnormal influence evaluation system, a storage medium and computing equipment, and belongs to the technical field of power system dispatching automation.
Background
The power grid safety and stability control system and device (the power grid safety and stability control system is called a stability control system for short, and the power grid safety and stability control device is called a stability control device for short, the stability control system comprises a plurality of stations, each station is connected with a plurality of stability control devices) are important secondary equipment for ensuring the safe and stable operation of the power system, and the operation mode arrangement of the power grid is closely related to the operation states of the stability control system and device.
In daily scheduling operation management, a scheduling operation controller not only needs to monitor the operation states of the stable control system and the device in real time, but also needs to know whether the control function of the stable control system can be normally executed on line. On the basis, the influence of the abnormal state of part of the stability control device on the control function of the stability control system needs to be further known, and a technical support is provided for the abnormal operation handling and maintenance arrangement of the stability control device.
Whether the control function of the stability control system can be normally executed or not is generally realized by simulating a current value strategy of the stability control system for fault defense on line and judging the quantity required to be controlled of various measures of the current value strategy and whether the object required to be controlled can be executed in a sufficient quantity under the specified power grid operation condition or not. However, there is no method for evaluating the influence of the abnormality of the stability control device on the control function of the stability control device.
Disclosure of Invention
The invention provides a stability control device abnormal influence evaluation method, a stability control device abnormal influence evaluation system, a storage medium and computing equipment, and solves the problems disclosed in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the method for evaluating the abnormal influence of the stability control device comprises the following steps:
acquiring a power grid expected fault set to be defended by an abnormal stability control device set according to a control strategy model of the stability control device and an expected abnormal combination; wherein, the abnormal combination is the abnormal combination of the stability control device;
identifying an expected failure subset losing defense after abnormal combination occurs and an expected failure subset continuing defense from the power grid expected failure set;
aiming at each expected failure in the subset of expected failures for continuous defense, identifying the current value strategy of the expected failure before and after the occurrence of the abnormal combination, and counting the controllable variable variation of the control measure in the current value strategy and the implementable evaluation state of the current value strategy after the occurrence of the abnormal combination;
and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to a preset rule, the controllable quantity change quantity, the implementable evaluation state and the predicted failure subset of the failure.
According to the control strategy model of the stability control device and the expected abnormal combination, acquiring a power grid expected fault set which should be defended by the abnormal stability control device set, and the specific process is as follows:
acquiring an abnormal stability control device set according to an expected abnormal combination;
and acquiring a power grid expected fault set which should be defended by the abnormal stable control device set according to the control strategy model of the abnormal stable control device set and the stable control device.
The abnormal combination comprises locking abnormality of the stability control device and communication abnormality between the stability control devices;
the abnormal stability control device set comprises a stability control device A with abnormal locking and a stability control device B at two ends of a communication abnormal channel;
the power grid expected fault set comprises power grid expected faults defended by the stability control device A, power grid expected faults defended by the stability control device B, expected faults acquiring data from the stability control device A and the stability control device B, and expected faults sending control commands to the stability control device A and the stability control device B.
The evaluation state may be implemented including insufficient control, sufficient control, and no control.
According to a preset rule, a controllable quantity change quantity, an implementable evaluation state and an expected failure subset losing defense, determining the safety level of the influence of abnormal combination on the control function of the stability control device, and the specific process is as follows:
determining the safety level of the influence of each expected fault on the control function of the stability control device according to a preset rule, a controllable quantity change quantity, an implementable evaluation state and an expected fault subset losing defense;
and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to the safety level of the influence of each expected fault on the control function of the stability control device.
The preset rule is as follows:
subset of expected failures F if defense is losteIf not null, then failure subset F is envisionedeEach expected failure f in (1)eTo steady control dressSetting the safety level influenced by the control function as an alarm;
expected failure subset F if the expected failure is a continued defensenOne predicted failure f with a controllable quantity reducednAnd the expected failure fnWhen the implementable evaluation state of the value strategy is that the control quantity is insufficient, the expected failure fnThe safety level influencing the control function of the stability control device is an alarm; wherein, the controllable quantity is reduced to the controllable quantity before the occurrence of the abnormal combination is larger than the controllable quantity after the occurrence of the abnormal combination;
case where the subset of envisioned failures that are out of defense is empty:
if the expected failure is the expected failure subset FnOne predicted failure f with a controllable quantity reducednAnd the expected failure fnThe expected failure f is determined when the implementable evaluation state of the value strategy is that the control quantity is sufficient or no control is requirednThe safety level influencing the control function of the stability control device is early-warning;
if the expected failure is the expected failure subset FnOne expected failure f with a controllable constant amountnThen the expected failure fnThe safety level influencing the control function of the stability control device is normal.
Determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to the safety level of the influence of each expected fault on the control function of the stability control device, wherein the specific formula is as follows:
S＝max{S(i),1≤i≤n}
wherein, S is a safety level of an influence of the abnormal combination on the control function of the stability control device, S (i) is a safety level of an influence of the ith expected fault on the control function of the stability control device, and n is an expected fault number.
Steady accuse device unusual influence evaluation system includes:
a set acquisition module: the method comprises the steps of obtaining an expected power grid fault set which should be defended by an abnormal stability control device set according to a control strategy model of the stability control device and an expected abnormal combination; wherein, the abnormal combination is the abnormal combination of the stability control device;
a subset identification module: the method comprises the steps of identifying an expected failure subset which is subjected to defense loss after abnormal combination occurs and an expected failure subset which is subjected to continuous defense from an expected failure set of a power grid;
the identification and statistics module is used for: the method comprises the steps of identifying an actual value strategy of the expected faults before and after the occurrence of abnormal combinations aiming at each expected fault in a subset of the expected faults for continuing defense, and counting the controllable variable variation of control measures in the actual value strategy and the implementable evaluation state of the actual value strategy after the occurrence of the abnormal combinations;
a security level module: the method is used for determining the safety level of the influence of the abnormal combination on the control function of the stable control device according to preset rules, variable quantities, evaluation state implementation and an expected failure subset of the loss of defense.
The security level module includes a security level module including,
a first rank determination module: the safety level of the influence of each expected fault on the control function of the stable control device is determined according to preset rules, variable quantity, and expected fault subsets which can implement evaluation states and lose defenses;
a second level determination module: and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to the safety level of the influence of each expected fault on the control function of the stability control device.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a stuck control equipment anomaly impact assessment method.
A computing device comprising one or more processors, one or more memories, and one or more programs stored in the one or more memories and configured to be executed by the one or more processors, the one or more programs including instructions for performing a stuck control device anomaly impact assessment method.
The invention achieves the following beneficial effects: the method comprises the steps of acquiring a power grid expected fault set based on a control strategy model and expected abnormal combinations, identifying an un-defense expected fault subset and a continuous defense expected fault subset in the power grid expected fault set after the abnormal combinations occur, acquiring a current value strategy of each expected fault in the continuous defense expected fault subset, counting the controllable quantity change quantity and the implementable evaluation state of the current value strategy, further determining the safety level of the influence of the abnormal combinations on the control function of the stability control device, and providing technical support for operation abnormity handling and maintenance arrangement of the stability control device.
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FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the method for evaluating the abnormal influence of the stability control device includes the following steps:
step 1, acquiring a power grid expected fault set to be defended by an abnormal stability control device set according to a control strategy model of the stability control device and an expected abnormal combination; wherein, the abnormal combination is the abnormal combination of the stability control device;
step 2, identifying an expected failure subset losing defense and an expected failure subset continuing defense after abnormal combination occurs from the power grid expected failure set;
step 3, aiming at each expected fault in the subset of the expected faults of the continuous defense, identifying the current value strategy of the expected faults before and after the occurrence of the abnormal combination, and counting the controllable quantity variation of the control measures in the current value strategy and the implementable evaluation state of the current value strategy after the occurrence of the abnormal combination;
and 4, determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to a preset rule, the controllable quantity change, the implementable evaluation state and the failure subset expected to lose defense.
The method comprises the steps of obtaining a power grid expected fault set based on a control strategy model and an expected abnormal combination, identifying an unformed expected fault subset and an expected fault subset continuing to defend in the power grid expected fault set after the abnormal combination occurs, obtaining a current value strategy of each expected fault in the expected fault subset continuing to defend, counting the controllable quantity change quantity and the implementable evaluation state of the current value strategy, further determining the safety level of the influence of the abnormal combination on the control function of the stability control device, and providing technical support for the operation abnormal handling and maintenance arrangement of the stability control device.
The current common abnormal combination comprises locking abnormality of the stability control device and communication abnormality between the stability control devices, and the abnormal stability control device can be obtained through the abnormal combination, so that an abnormal stability control device set is formed.
The abnormal stable control device is a stable control device which is in control association with any one component element in the abnormal combination, and specifically comprises a stable control device A for locking the abnormal and a stable control device B at two ends of a communication abnormal channel.
According to the abnormal stable control device set and the stable control device control strategy model obtained from the power grid dispatching automation system, a power grid expected fault set to be defended by the abnormal stable control device set can be obtained, and the power grid expected fault set specifically comprises a power grid expected fault defended by a stable control device A, a power grid expected fault defended by a stable control device B, an expected fault obtaining data from the stable control device A and the stable control device B, and an expected fault sending a control command to the stable control device A and the stable control device B.
After the abnormal combination occurs, part of the expected faults in the expected fault set of the power grid are subjected to defense loss, and part of the expected faults can continue to defend, so that the expected fault subset subjected to defense loss and the expected fault subset subjected to continuous defense after the abnormal combination occurs are identified.
Taking the locking of the stability control device as an example, the locking of the stability control device mainly includes locking due to abnormal locking of the stability control device and locking of the associated stability control device caused by abnormal communication, after the locking of the stability control device, an expected failure of defense of the stability control device will lose defense, and the defense will continue if the failure is not related to the associated stability control device.
And for the identified expected failure subset for continuous defense, identifying an actual value strategy before and after the occurrence of the abnormal combination aiming at each expected failure in the expected failure subset based on the operation condition of the power grid, and counting the controllable quantity change quantity of the control measure in the actual value strategy and the implementable evaluation state of the actual value strategy after the occurrence of the abnormal combination.
The controllable variable quantity is the controllable variable quantity before and after the abnormal combination occurs. The evaluation state can be implemented including insufficient control quantity, sufficient control quantity and no control; the insufficient control quantity means that the required control quantity of at least one control measure type in the current value strategy is larger than the corresponding controllable quantity; the enough control quantity means that the quantity required to be controlled of all control measure types in the current value strategy is less than or equal to the corresponding controllable quantity; the control quantity is enough to mean that the control quantity required for all control measure types in the current value strategy is zero.
In the step 4, before determining the safety level of the abnormal combination affecting the control function of the stability control device, the safety level of each expected fault affecting the control function of the stability control device needs to be determined, so the specific process of the step 4 is as follows:
41) determining the safety level of the influence of each expected fault on the control function of the stability control device according to a preset rule, a controllable quantity variation, an implementable evaluation state and an expected fault subset losing defense;
the preset rule is as follows:
1) subset of expected failures F if defense is losteIf not null, then failure subset F is envisionedeEach expected failure f in (1)eThe safety level influencing the control function of the stability control device is an alarm;
2) expected failure subset F if the expected failure is a continued defensenOne predicted failure f with a controllable quantity reducednAnd the expected failure fnWhen the implementable evaluation state of the value strategy is that the control quantity is insufficient, the expected failure fnThe safety level influencing the control function of the stability control device is an alarm; wherein, the controllable quantity is reduced to the controllable quantity before the occurrence of the abnormal combination is larger than the controllable quantity after the occurrence of the abnormal combination;
3) case where the subset of envisioned failures that are out of defense is empty:
if the expected failure is the expected failure subset FnPredicted failure f in which a controllable amount becomes smallnAnd the expected failure fnThe expected failure f is determined when the implementable evaluation state of the value strategy is that the control quantity is sufficient or no control is requirednThe safety level influencing the control function of the stability control device is early-warning;
if the expected failure is the expected failureCollection FnOne expected failure f with a controllable constant amountnThen the expected failure fnThe safety level influencing the control function of the stability control device is normal.
The safety level determination process that anticipates the impact of a fault on the control function of the stability control device is therefore as follows:
s1) predicted failure subset F if defense is losteIs not null, for the expected failure subset FeEach of the predicted failures feSetting the abnormal influence type of the fault to be that the defense range is reduced, setting the safety level to be an alarm, and adding the alarm into an associated expected fault set R;
s2) subset of expected failures F if defense is continuednNon-null, for the expected failure subset FnEach of the predicted failures fnIf the controllable quantity before and after the occurrence of the abnormal combination is not changed, the abnormal influence type is set to be no influence, and the safety level is set to be normal; if there is a decrease in the controllable amount of at least one type of control measure, go to S3); otherwise, adding the related expected faults with the abnormal influence type of no influence into the related expected fault set R;
s3) if the current value strategy after the abnormal combination occurs can implement the evaluation state, namely the control quantity is insufficient, setting the abnormal influence type as controllable quantity reduction, and setting the safety level as alarm; if the current value strategy after the abnormal combination occurs can implement the evaluation state that the control quantity is enough or not needed to be controlled, the abnormal influence type is set as controllable quantity reduction, and the safety level is set as early warning; and adding the related expected faults of which the abnormal influence types are controllable quantity reduction to the associated expected fault set R.
42) Determining the safety level of the influence of the abnormal combination on the control function of the stability control device and an associated expected fault set, namely an associated expected fault set R according to the safety level of the influence of each expected fault on the control function of the stability control device;
the concrete formula is as follows:
S＝max{S(i),1≤i≤n}
s is the safety level of the influence of the abnormal combination on the control function of the stability control device; (i) the safety level of the influence of the ith predicted fault on the control function of the stability control device; s (i) 0, 1 or 2; where 0 means no effect, at normal level; 1 represents that the controllable quantity is reduced, the defense range is not reduced or the controlled quantity is insufficient, and the early warning level is achieved; 2 indicates that the defense range is reduced or the controlled variable is reduced and the controlled variable is insufficient, and is at the alarm level, and n is the expected number of faults.
The method mainly aims at analyzing and evaluating the influence of the abnormality of the stability control device on the control function, although the control function has the characteristics of complex control logic and customization, the control function is evaluated from the aspects of whether the current value strategy changes before and after the abnormality occurs and whether the affected current value strategy can be executed in sufficient quantity after the abnormality occurs, so that technical support is provided for the abnormality treatment and maintenance arrangement of the stability control device.
Steady accuse device unusual influence evaluation system includes:
a set acquisition module: the method comprises the steps of obtaining an expected power grid fault set which should be defended by an abnormal stability control device set according to a control strategy model of the stability control device and an expected abnormal combination; wherein, the abnormal combination is the abnormal combination of the stability control device;
a subset identification module: the method comprises the steps of identifying an expected failure subset losing defense after abnormal combination occurs and an expected failure subset continuing defense from an expected failure set of a power grid;
the identification and statistics module: the method comprises the steps of identifying an actual value strategy of the expected faults before and after the occurrence of abnormal combinations aiming at each expected fault in a subset of the expected faults for continuing defense, and counting the controllable variable variation of control measures in the actual value strategy and the implementable evaluation state of the actual value strategy after the occurrence of the abnormal combinations;
a security level module: the method is used for determining the safety level of the influence of the abnormal combination on the control function of the stable control device according to the preset rule, the variable quantity, the practical evaluation state and the expected failure subset of the failure.
The security level module includes a security level module including,
a first rank determination module: the safety level of the influence of each expected fault on the control function of the stable control device is determined according to preset rules, variable quantity, and expected fault subsets which can implement evaluation states and lose defenses;
a second level determination module: and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to the safety level of the influence of each expected fault on the control function of the stability control device.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a stuck control equipment anomaly impact assessment method.
A computing device comprising one or more processors, one or more memories, and one or more programs stored in the one or more memories and configured to be executed by the one or more processors, the one or more programs including instructions for performing a stuck control device anomaly impact assessment method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.

Claims (11)

1. The method for evaluating the abnormal influence of the stability control device is characterized by comprising the following steps:
acquiring an expected power grid fault set to be defended by an abnormal stable control device set according to a control strategy model of the stable control device and an expected abnormal combination; wherein, the abnormal combination is the abnormal combination of the stability control device;
identifying an expected failure subset losing defense and an expected failure subset continuing defense after an abnormal combination occurs from the power grid expected failure set;
aiming at each expected failure in the subset of expected failures for continuous defense, identifying the current value strategy of the expected failure before and after the occurrence of the abnormal combination, and counting the controllable variable variation of the control measure in the current value strategy and the implementable evaluation state of the current value strategy after the occurrence of the abnormal combination;
and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to a preset rule, the controllable quantity change quantity, the implementable evaluation state and the predicted failure subset of the failure.
2. The stability control device abnormal influence assessment method according to claim 1, wherein a power grid forecast fault set to be defended by an abnormal stability control device set is obtained according to a control strategy model of the stability control device and a forecast abnormal combination, and the specific process is as follows:
acquiring an abnormal stability control device set according to an expected abnormal combination;
and acquiring a power grid expected fault set which should be defended by the abnormal stable control device set according to the control strategy model of the abnormal stable control device set and the stable control device.
3. The stability control device abnormal influence evaluation method according to claim 1 or 2, wherein the abnormal combination includes a stability control device locking abnormality and a communication abnormality between the stability control devices;
the abnormal stability control device set comprises a stability control device A with abnormal locking and a stability control device B at two ends of a communication abnormal channel;
the power grid expected fault set comprises power grid expected faults defended by the stability control device A, power grid expected faults defended by the stability control device B, expected faults acquiring data from the stability control device A and the stability control device B, and expected faults sending control commands to the stability control device A and the stability control device B.
4. The stability control device abnormal influence evaluation method according to claim 1, wherein the implementable evaluation state includes insufficient control amount, sufficient control amount, and no control.
5. The stability control device abnormal influence assessment method according to claim 4, wherein the safety level of the influence of the abnormal combination on the control function of the stability control device is determined according to a preset rule, a controllable quantity change quantity, an implementable assessment state and an expected failure subset losing defense, and the specific process is as follows:
determining the safety level of the influence of each expected fault on the control function of the stability control device according to a preset rule, a controllable quantity change quantity, an implementable evaluation state and an expected fault subset losing defense;
and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to the safety level of the influence of each expected fault on the control function of the stability control device.
6. The stability control device abnormal influence assessment method according to claim 4 or 5, wherein the preset rule is:
subset of expected failures F if defense is losteIf not null, then failure subset F is envisionedeEach expected failure f in (1)eThe safety level influencing the control function of the stability control device is an alarm;
subset of expected failures F if expected failures are a continuing defensenOne predicted failure f with a controllable quantity reducednAnd the expected failure fnWhen the implementable evaluation state of the value strategy is that the control quantity is insufficient, the expected fault fnThe safety level influencing the control function of the stability control device is an alarm; wherein, the controllable quantity is reduced to the controllable quantity before the occurrence of the abnormal combination is larger than the controllable quantity after the occurrence of the abnormal combination;
case where the subset of envisioned failures that are out of defense is empty:
if the expected failure is the expected failure subset FnOne predicted failure f with a controllable quantity reducednAnd the expected failure fnThe expected failure f is determined when the implementable evaluation state of the value strategy is that the controlled variable is sufficient or no control is requirednThe safety level influencing the control function of the stability control device is early-warning;
if the expected failure is the expected failure subset FnOne expected failure f with a controllable constant amountnThen the expected failure fnThe safety level influencing the control function of the stability control device is normal.
7. The stability control device abnormal influence assessment method according to claim 6, wherein the safety level of the influence of the abnormal combination on the control function of the stability control device is determined according to the safety level of the influence of each expected fault on the control function of the stability control device, and the specific formula is as follows:
S＝max{S(i),1≤i≤n}
wherein, S is a safety level of an influence of the abnormal combination on the control function of the stability control device, S (i) is a safety level of an influence of the ith expected fault on the control function of the stability control device, and n is an expected fault number.
8. Steady accuse device unusual influence evaluation system, its characterized in that includes:
a set acquisition module: the method comprises the steps of obtaining an expected power grid fault set which is to be defended by an abnormal stability control device set according to a control strategy model of the stability control device and an expected abnormal combination; wherein, the abnormal combination is the abnormal combination of the stability control device;
a subset identification module: the method comprises the steps of identifying an expected failure subset losing defense after abnormal combination occurs and an expected failure subset continuing defense from an expected failure set of a power grid;
the identification and statistics module: the method comprises the steps of identifying an actual value strategy of the expected faults before and after the occurrence of abnormal combinations aiming at each expected fault in a subset of the expected faults for continuing defense, and counting the controllable variable variation of control measures in the actual value strategy and the implementable evaluation state of the actual value strategy after the occurrence of the abnormal combinations;
a security level module: the method is used for determining the safety level of the influence of the abnormal combination on the control function of the stable control device according to preset rules, variable quantities, evaluation state implementation and an expected failure subset of the loss of defense.
9. The stability control device abnormal influence assessment system according to claim 8, wherein the safety level module comprises,
a first rank determination module: the safety level of the influence of each expected fault on the control function of the stable control device is determined according to a preset rule, a controllable variable, an executable evaluation state and an expected fault subset losing defense;
a second level determination module: and determining the safety level of the influence of the abnormal combination on the control function of the stability control device according to the safety level of the influence of each expected fault on the control function of the stability control device.
10. A computer readable storage medium storing one or more programs, characterized in that: the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods of claims 1-7.
11. A computing device, comprising:
one or more processors, one or more memories, and one or more programs stored in the one or more memories and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 1-7.
CN202210105002.1A 2022-01-28 2022-01-28 Stability control device abnormal influence evaluation method and system, storage medium and computing equipment Pending CN114626672A (en)

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