A method and system for evaluating the destructive power of high-altitude electromagnetic pulses on power systems

Abstract

The application discloses a kind of high-altitude electromagnetic pulse to the evaluation method and system of the destructive power of electric power system, comprising: through high-altitude electromagnetic pulse HEMP environment E1 component and functional component coupling analysis, obtain electromagnetic stress;Obtain effect intensity;The electromagnetic stress and effect intensity corresponding to each functional component are compared, the state of each functional component is determined, and the state of equipment is determined according to the state of each functional component;According to the initial fault scene of electric power system generated by equipment state, carry out cascade failure analysis, determine the intermediate state of electric power system after E1 component acts;Based on intermediate state, determine the geomagnetic induction current and transformer reactive generated by electric power system after HEMP environment E3 component acts on electric power system;Based on the geomagnetic induction current, transformer reactive and the intermediate state of electric power system, determine the final state of electric power system after E3 component acts;Based on the final state and intermediate state of electric power system, determine the destructive power of HEMP to electric power system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power systems, and more particularly, to a method and system for evaluating the damage of high-altitude electromagnetic pulse to power systems. BACKGROUND

[0002] High-altitude electromagnetic pulse (HEMP) refers to the electromagnetic pulse generated by a nuclear explosion above 30 km from the ground. According to the generation mechanism and arrival time, HEMP is divided into early, medium and late three parts, abbreviated as E1, E2 and E3. The early HEMP (E1) comes from the interaction of the nuclear explosion instantaneous gamma rays and the 30-40 km atmosphere, with a steep rising front (ns level) of the pulse waveform, a short duration (less than 1 us), a wide distribution range, a high peak intensity and a wide frequency spectrum; the initial part of the medium HEMP (E2) comes from the interaction of the nuclear explosion delayed gamma rays and the atmosphere, and the later part is mainly the gamma rays produced by the non-elastic collision of the explosion produced neutrons with air, which is smaller in intensity and longer in duration than E1, reaching the order of ms; the initial part of the late HEMP (E3) is generated from the ionized debris in the nuclear explosion fireball expanding in the geomagnetic field, and the later part comes from the disturbance of the heated and ionized upper atmosphere to the geomagnetic field, which is much lower in intensity and much longer in duration than E1 and E2.

[0003] Modern power systems are increasingly expanding in scale, highly interconnected in power grid, high in voltage level, long in transmission distance, and high in informatization and automation level. In particular, with the high proportion of new energy and high proportion of power electronic equipment access, the power system requires higher observability, measurability and controllability, and is more dependent on secondary equipment, sensing devices and communication systems. When the power system is subjected to HEMP impact, it is more vulnerable and is prone to large-area power outage, which is difficult to recover in a short time and has a huge impact on the economy and society. Therefore, how to evaluate the damage of HEMP to the power system, identify the weak links of the power system under the damage of high-altitude nuclear electromagnetic pulse and carry out key protection is of great significance for the defense of high-altitude nuclear electromagnetic attack. SUMMARY

[0004] The present application provides a method and system for evaluating the damage of high-altitude electromagnetic pulse to power systems to solve the problem of how to determine the damage of HEMP to power systems.

[0005] In order to solve the above problems, according to one aspect of the present application, a method for evaluating the damage of high-altitude electromagnetic pulse to power systems is provided, the method comprising:

[0006] obtaining electromagnetic stress through HEMP environment E1 component and coupling analysis of each functional component in the power system;

[0007] obtaining the effect intensity of each functional component after the HEMP effect test;

[0008] comparing the electromagnetic stress and the effect intensity of each functional component to determine the state of each functional component, and determining the device state according to the state of each functional component;

[0009] generating an initial fault scenario of the power system according to the device state, and carrying out cascade fault analysis on the basis of the initial fault scenario to determine the intermediate state of the power system after the E1 component acts;

[0010] Based on the intermediate state of the power system, the geomagnetic induction current and transformer reactive power generated by the power system after the E3 component of the HEMP environment acts on the power system are determined.

[0011] Based on the geomagnetic induction current, transformer reactive power and intermediate state of the power system, the final state of the power system after the E3 component acts is determined.

[0012] Based on the final state and the intermediate state of the power system, the destructive power of HEMP on the power system is determined.

[0013] Preferably, wherein the power system is divided into three levels of subsystem, device and functional component, the power system is composed of subsystems, the subsystems are composed of multiple devices, and each device is composed of multiple functional components.

[0014] Preferably, wherein the electromagnetic stress includes the coupling voltage peak value, the coupling current peak value and the total charge entering the device generated by the HEMP acting on the functional component.

[0015] Preferably, wherein the final state of the power system after the E3 component acts is determined based on the geomagnetic induction current, transformer reactive power and intermediate state of the power system, including:

[0016] The geomagnetic induction current and transformer reactive power are superimposed on the intermediate state of the power system to determine the operating state offset of the power system.

[0017] Based on the operating state offset of the power system, power cascade fault analysis is carried out to determine the exit timing of the power system device elements.

[0018] The final state of the power system is determined according to the exit timing.

[0019] Preferably, wherein the destructive power of HEMP on the power system is determined based on the final state and the intermediate state of the power system, including:

[0020] Determine the load loss of the E1 stage and the E3 stage according to the final state and the intermediate state of the power system respectively, and fuse the comprehensive load loss according to the weight corresponding to different loads.

[0021] According to the comprehensive load loss, evaluate the damage of the high-altitude electromagnetic pulse to the power system.

[0022] According to another aspect of the present application, a system for evaluating the damage of a high-altitude electromagnetic pulse to a power system is provided, and the system comprises:

[0023] An electromagnetic stress acquisition unit is configured to acquire electromagnetic stress through high-altitude electromagnetic pulse (HEMP) environment E1 component and coupling analysis of each functional component in the power system.

[0024] An effect intensity acquisition unit is configured to acquire effect intensity of each functional component after HEMP effect test.

[0025] A device state determination unit is configured to compare the electromagnetic stress and the effect intensity of each functional component, determine the state of each functional component, and determine the device state according to the state of each functional component.

[0026] A power system intermediate state determination unit is configured to generate an initial fault scenario of the power system according to the device state, carry out cascade failure analysis based on the initial fault scenario, and determine the intermediate state of the power system after the E1 component acts.

[0027] A geomagnetic induction current and transformer reactive power determination unit is configured to determine the geomagnetic induction current and the transformer reactive power generated by the power system after the HEMP environment E3 component acts on the power system based on the intermediate state of the power system.

[0028] A power system final state determination unit is configured to determine the final state of the power system after the E3 component acts based on the geomagnetic induction current, the transformer reactive power and the intermediate state of the power system.

[0029] A damage evaluation unit is configured to determine the damage of the HEMP to the power system based on the final state and the intermediate state of the power system.

[0030] Preferably, the power system is divided into three levels of subsystem, device and functional component, the power system is composed of subsystems, the subsystems are composed of multiple devices, and each device is composed of multiple functional components.

[0031] Preferably, the electromagnetic stress comprises coupling voltage peak value, coupling current peak value and total charge entering the device generated by the HEMP acting on the functional component.

[0032] Preferably, the power system final state determination unit determines the final state of the power system after the E3 component acts based on the geomagnetically induced current, transformer reactive power and intermediate state of the power system, and includes:

[0033] The geomagnetically induced current and transformer reactive power are superimposed on the intermediate state of the power system to determine the operating state offset of the power system;

[0034] Based on the operating state offset of the power system, power cascade fault analysis is carried out to determine the exit timing of the power system equipment elements;

[0035] The final state of the power system is determined according to the exit timing.

[0036] Preferably, the damage assessment unit determines the damage of the HEMP to the power system based on the final state and the intermediate state of the power system, and includes:

[0037] The load loss of the E1 stage and the E3 stage is determined according to the final state and the intermediate state of the power system, respectively, and the comprehensive load loss is determined by fusing the weights corresponding to different loads;

[0038] The damage of the high-altitude electromagnetic pulse to the power system is evaluated according to the comprehensive load loss;

[0039] Based on another aspect of the present application, the present application provides a computer readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the steps of any one of the power system damage evaluation methods.

[0040] Based on another aspect of the present application, the present application provides an electronic device, comprising:

[0041] The computer readable storage medium described above; and

[0042] One or more processors for executing the program in the computer readable storage medium.

[0043] The application provides a method and system for evaluating the damage of high-altitude electromagnetic pulse (HEMP) to a power system, comprising: obtaining electromagnetic stress through HEMP environment E1 component and coupling analysis of each functional component in the power system; obtaining effect intensity of each functional component after HEMP effect test; comparing the electromagnetic stress and the effect intensity of each functional component to determine the state of each functional component and the state of the equipment according to the state of each functional component; generating an initial fault scene of the power system according to the state of the equipment, carrying out cascade failure analysis based on the initial fault scene to determine the intermediate state of the power system after the action of the E1 component; determining the geomagnetically induced current and transformer reactive power generated by the power system after the action of HEMP environment E3 component on the power system based on the intermediate state of the power system; determining the final state of the power system after the action of the E3 component based on the geomagnetically induced current, the transformer reactive power and the intermediate state of the power system; and determining the damage of HEMP to the power system based on the final state and the intermediate state of the power system. The application helps to identify the weak links and key positions of the power system under the attack of high-altitude electromagnetic pulse, so as to carry out targeted and focused protection, which improves the defense level of the power system against high-altitude nuclear electromagnetic attack and saves the protection cost of the power system compared with the strategy of reinforcing a large range of nodes without targeting. BRIEF DESCRIPTION OF DRAWINGS

[0044] The exemplary embodiments of the present application can be more fully understood with reference to the following drawings:

[0045] Figure 1 A flowchart of the method for evaluating the damage of high-altitude electromagnetic pulse to a power system according to the embodiments of the present application;

[0046] Figure 2 A schematic diagram of the time-domain characteristics of high-altitude electromagnetic pulse;

[0047] Figure 3 A hierarchical diagram of the components of a power system according to the embodiments of the present application;

[0048] Figure 4 A flowchart of the evaluation of the damage of high-altitude electromagnetic pulse to a power system according to the embodiments of the present application;

[0049] Figure 5 A flowchart of the state evaluation of a functional component according to the embodiments of the present application;

[0050] Figure 6 A structural schematic diagram of the evaluation system 600 of the damage of high-altitude electromagnetic pulse to a power system according to the embodiments of the present application. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0052] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0053] Figure 1 This is a flowchart of a method 100 for assessing the destructive power of high-altitude electromagnetic pulses to power systems according to an embodiment of the present invention. Figure 1 As shown, the method for assessing the destructive power of high-altitude electromagnetic pulses (HEMPs) to power systems provided by this invention helps identify weak links and critical components of the power system under HEMP attacks, enabling targeted protection. This improves the power system's defense against HEMP attacks and saves on power system protection costs compared to large-scale, untargeted node hardening strategies. The method 100 for assessing the destructive power of HEMPs to power systems provided by this invention begins at step 101. In step 101, electromagnetic stress is obtained through coupling analysis of the HEMP environment E1 component and each functional component in the power system.

[0054] Preferably, the power system is divided into three levels: subsystems, equipment, and functional components. The power system is composed of subsystems, each of which is composed of multiple devices, and each device is composed of multiple functional components.

[0055] Preferably, the electromagnetic stress includes: the peak value of the coupling voltage generated by the HEMP acting on the functional component, the peak value of the coupling current, and the total charge entering the device.

[0056] In step 102, the effect intensity of each functional component after the HEMP effect test is obtained.

[0057] In step 103, the electromagnetic stress and effect intensity corresponding to each functional component are compared to determine the state of each functional component, and the state of the device is determined based on the state of each functional component.

[0058] In step 104, the initial fault scenario of the power system is generated according to the device state, and on the basis of the initial fault scenario, the cascading fault analysis is carried out to determine the intermediate state of the power system after the E1 component acts.

[0059] The time-domain characteristics of high-altitude electromagnetic pulse are as shown in Figure 2 The high-altitude electromagnetic pulse and the response process of the power system are as follows: the high-altitude nuclear explosion generates the HEMP, wherein the E1 component has a duration of hundreds of nanoseconds, and the induced surge caused by the E1 component has a duration of up to several microseconds; the malfunction of the device functional components to the occurrence of the device fault occurs within several microseconds to several milliseconds. The response of the power system to the E1 component is expected to occur within several seconds. Next, the power system is affected by the E3 component of the HEMP environment, and the E3 component has a duration of tens of seconds to hundreds of seconds; the response of the power system to the E3 component can occur within several seconds to the period of the E3 component.

[0060] The time of the different components of the HEMP acting on the power system is different, and the damage degree of different devices is different; since the surge generated by the medium-term HEMP (E2) on the transmission line is similar to lightning or operating overvoltage, the existing power system has mature methods for effective protection, and the method proposed in the present application only considers the early component E1 and the late component E3 of the HEMP, and according to the order of acting on the power system, the state of the power system after the E1 acts is taken as the initial state of the E3 action.

[0061] The method proposed in the present application considers the response process of the power system to the HEMP environment, and divides the power system into three levels of subsystems, devices and functional components, as shown in Figure 3 The evaluation method proposed in the present application is based on the assumption that during the action of the E1 component of the HEMP environment on the power system, each subsystem, device and functional component can be independently evaluated. Therefore, the division of the subsystems, devices and functional components is based on the principle of functional independence and non-interference during the action of the E1 component; for example, the functional components of the transformer, under the action of the E1 component, the wiring terminals are damaged, and the functions of other functional components such as the gas relay and the radiator are not affected in the short term.

[0062] In combination with Figure 4As shown, in the present application, the evaluation process is divided into two stages of E1 component action and E3 component action. In the E1 component action stage, first, the HEMP environment E1 parameters and the initial state of the power system to be evaluated are input (if the actual parameters of the HEMP environment are lacking, the relevant parameters of the HEMP early, medium and late waveforms given in the standard IEC 61000-2-9 published by the International Electrotechnical Commission can be used). Then, the electromagnetic stress is obtained through the coupling analysis of the high-altitude electromagnetic pulse HEMP environment E1 component and each functional component in the power system. Then, the effect intensity obtained by each functional component in the HEMP effect test is obtained (the data can be directly obtained through other channels). Then, the state of the functional component is determined in combination with the data of the electromagnetic stress and the effect intensity, and the device state is determined based on the state of the functional component.

[0063] The present application determines the electromagnetic stress suffered by the functional component through the coupling analysis of the HEMP environment E1 component and the functional component, obtains the effect intensity data of the functional component in the HEMP environment through the effect test, and compares and analyzes the electromagnetic stress suffered by the functional component with its own effect intensity data to determine the state of the functional component after the HEMP action.

[0064] In the present application, the power system is divided into three levels of subsystem, device and component, the power system is composed of subsystems, the subsystems are composed of a large number of devices including power plants, substations, transmission lines, control centers, etc., and the devices are composed of functional components such as cores, windings, insulation bushings, terminals and leads. The state of the functional component determines the state of the device, the state of the device determines the state of the subsystem, and the state of the subsystem determines the state of the power system. The functional component is the smallest unit in the evaluation method in the present application. The present application considers that the functional components, devices and subsystems are functionally independent and do not interfere with each other in the extremely short time of HEMP action.

[0065] In the present application, the electromagnetic stress suffered by the functional component is determined through the coupling analysis of the HEMP environment E1 component and the functional component, the intensity data of the functional component in the HEMP environment is obtained through the effect test, and the state of the functional component after the HEMP action is determined by comparing and analyzing the electromagnetic stress suffered by the functional component with its own effect intensity data. The electromagnetic stress refers to the coupling voltage peak value, the coupling current peak value, the total charge entering the device or other values that can be regarded as a comparison standard generated by the HEMP acting on the functional component. The effect intensity of the functional component refers to the electromagnetic stress threshold value of the damage, damage and other effects. The electromagnetic stress generated by the HEMP environment and the intensity of the functional component under the action of the HEMP are described by probability.

[0066] As Figure 5As shown, when the HEMP coupling analysis is performed, the HEMP incident field can be considered deterministic according to the standard of high-altitude nuclear explosion scene, but due to the position of the functional component studied, the shielding effect of the nearby equipment, and the coupling mechanism of the HEMP entering, a series of electromagnetic stress uncertainties can be caused, and such uncertainties are usually represented by a probability density function. Generally, by constructing a calculation model for complex interaction with the HEMP environment, the model is used for a specific input parameter range to obtain the probability density function. Under the HEMP environment, the electromagnetic stress threshold of the functional component or equipment for damage, destruction and other effects is regarded as the strength of the component or equipment, and the strength of the component or equipment is obtained by statistical analysis of HEMP effect test data, which is usually represented by a probability density function, and the HEMP effect test mainly uses injection method or irradiation method. The comparison of the electromagnetic stress-strength relationship of the functional component or equipment determines the state of the HEMP functional component or equipment, including interference, energy reduction, damage, destruction, etc.

[0067] Finally, according to the different states of the equipment after the action of the E1 component, the initial fault scene of the power system N-k is generated, and under the initial fault scene, power cascade failure analysis is carried out, a series of component failures or operating state deviations are determined through power system flow and steady-state analysis, taking into account protection, security and control power system failure prevention measures, to determine the intermediate state of the power system after the action of the E1 component and the cascade failure. The process of the E1 component acting on the power system to the intermediate state of the power system may cause load loss.

[0068] In step 105, based on the intermediate state of the power system, the geomagnetically induced current and transformer reactive power generated by the power system after the action of the E3 component of the HEMP environment on the power system are determined.

[0069] In step 106, based on the geomagnetically induced current, transformer reactive power and intermediate state of the power system, the final state of the power system after the action of the E3 component is determined.

[0070] Preferably, wherein the final state of the power system after the action of the E3 component is determined based on the geomagnetically induced current, transformer reactive power and intermediate state of the power system, comprising:

[0071] The geomagnetically induced current and transformer reactive power are superimposed on the intermediate state of the power system to determine the operating state deviation of the power system;

[0072] Based on the operating state deviation of the power system, power cascade failure analysis is carried out to determine the exit timing of the power system equipment components;

[0073] According to the exit timing, the final state of the power system is determined.

[0074] At step 107, the damage of the HEMP to the power system is determined based on the final state and the intermediate state of the power system.

[0075] Preferably, wherein the damage of the HEMP to the power system is determined based on the final state and the intermediate state of the power system, comprising:

[0076] The load loss of the E1 stage and the E3 stage is respectively determined according to the final state and the intermediate state of the power system, and the comprehensive load loss is determined by fusing according to the weights corresponding to different loads;

[0077] The damage of the high-altitude electromagnetic pulse to the power system is evaluated according to the comprehensive load loss;

[0078] In combination with Figure 4 As shown in the figure, in the present application, the E3 component effect is generated on the basis of the intermediate state of the power system, and the influence of the E3 component on the power system is similar to the influence of the geomagnetic storm, which can generate geomagnetic induction current in the closed loop formed by the neutral point grounding transformer and the transmission line. When the geomagnetic induction current flows through the transformer, it can cause the core half-wave saturation and generate a large amount of reactive loss.

[0079] In the E3 component action stage, first, the E3 parameters of the HEMP environment and the intermediate state of the power system are input, then the geomagnetic induction current and the transformer reactive loss generated by the power system under the action of the E3 component are calculated, and the system operating state offset is determined after superimposing them on the "intermediate state" of the power system, such as line overload, voltage out-of-limit, etc. Then, based on the system operating state offset, the power cascade fault analysis is carried out to determine the system device element exit timing, and the power system final state (power cut range) is determined according to the exit timing, and the power system load loss is determined through power flow and stability analysis.

[0080] Finally, the load losses in the E1 and E3 two action stages are counted, different weight coefficients are given according to the importance of the load, the comprehensive load loss is calculated, and the damage of the high-altitude electromagnetic pulse to the power system is evaluated according to the comprehensive load loss.

[0081] In the present application, the initial fault scene of the power system under the action of the HEMP is determined, the system cascade fault process is analyzed according to the initial fault scene, the power cut range of the power system under the action of the HEMP is determined, and the damage of the HEMP to the power system is determined according to the comprehensive load loss amount and the occurrence probability caused by the HEMP.

[0082] In the present application, the power equipment state after HEMP action is obtained by HEMP effect test, or is evaluated by expert system according to functional component state and mutual influence between functional component states. The power equipment state set after HEMP action constitutes the initial fault scene of power system. The cascade failure in the present application refers to the system chain reaction caused by initial fault under HEMP action. The action time sequence of power system protection, security and stability control device is determined through power system flow calculation and stability analysis, so as to simulate the response time of power system to HEMP attack. The action time of E1 component is nanosecond time scale, and the response time of power system to the initial fault caused by E1 component is several seconds; the action time of E3 component is tens of seconds, and the response time of power system to the fault impact caused by E3 component is tens of seconds.

[0083] The method of the present application divides the response of power system to HEMP action into two stages in time frame, the cascade failure of system caused by E1 component, the "intermediate state" of power system is formed, which is taken as the initial state of E3 component, and the final comprehensive load loss of power system is determined based on the fault impact and system cascade failure process caused by E3 component. The comprehensive load loss in the present application is obtained according to power system cascade failure simulation, and different weight coefficients are given according to the importance of different loads in power outage range.

[0084] The method of the present application is used for carrying out consequence evaluation of power system after high-altitude electromagnetic pulse attack, identifying the weak links and key positions of power system under high-altitude electromagnetic pulse action, and facilitating targeted protection.

[0085] Figure 6 The structure schematic diagram of the high-altitude electromagnetic pulse damage force evaluation system 600 according to the embodiment of the present application. As shown in Figure 6 The high-altitude electromagnetic pulse damage force evaluation system 600 provided by the embodiment of the present application includes: an electromagnetic stress acquisition unit 601, an effect intensity acquisition unit 602, a device state determination unit 603, a power system intermediate state determination unit 604, a geomagnetic induction current and transformer reactive power determination unit 605, a power system final state determination unit 606 and a damage force evaluation unit 607.

[0086] Preferably, the electromagnetic stress acquisition unit 601 is used for acquiring electromagnetic stress through high-altitude electromagnetic pulse HEMP environment E1 component and coupling analysis of each functional component of power system.

[0087] Preferably, the power system is divided into three levels of subsystem, device and functional component, the power system is composed of subsystems, the subsystems are composed of multiple devices, and each device is composed of multiple functional components.

[0088] Preferably, wherein the electromagnetic stress includes: coupling voltage peak value, coupling current peak value and total charge into the device generated by HEMP acting on the functional components.

[0089] Preferably, the effect intensity acquisition unit 602 is configured to acquire the effect intensity of each functional component after the HEMP effect test.

[0090] Preferably, the device state determination unit 603 is configured to compare the electromagnetic stress and the effect intensity corresponding to each functional component, determine the state of each functional component, and determine the state of the device according to the state of each functional component.

[0091] Preferably, the power system intermediate state determination unit 604 is configured to generate an initial fault scenario of the power system according to the state of the device, and perform cascade failure analysis based on the initial fault scenario to determine the intermediate state of the power system after the E1 component acts.

[0092] Preferably, the geomagnetic induction current and transformer reactive power determination unit 605 is configured to determine the geomagnetic induction current and transformer reactive power generated by the power system after the E3 component of the HEMP environment acts on the power system based on the intermediate state of the power system.

[0093] Preferably, the power system final state determination unit 606 is configured to determine the final state of the power system after the E3 component acts based on the geomagnetic induction current, transformer reactive power and intermediate state of the power system.

[0094] Preferably, the power system final state determination unit 606 determines the final state of the power system after the E3 component acts based on the geomagnetic induction current, transformer reactive power and intermediate state of the power system, including:

[0095] Superimposing the geomagnetic induction current and transformer reactive power on the intermediate state of the power system to determine the operating state offset of the power system;

[0096] Performing power cascade failure analysis based on the operating state offset of the power system to determine the exit timing of the power system device elements;

[0097] Determining the final state of the power system according to the exit timing.

[0098] Preferably, the damage force evaluation unit 607 is configured to determine the damage force of the HEMP on the power system based on the final state and the intermediate state of the power system.

[0099] Preferably, the damage assessment unit 607 determines the damage of the HEMP to the power system based on the final state and the intermediate state of the power system, comprising:

[0100] The load loss of the E1 stage and the E3 stage are determined according to the final state and the intermediate state of the power system respectively, and the comprehensive load loss is determined by fusing the different loads according to the corresponding weights;

[0101] The damage of the HEMP to the power system is evaluated according to the comprehensive load loss;

[0102] The evaluation system 600 of the damage of the HEMP to the power system of the embodiment of the present application corresponds to the evaluation method 100 of the damage of the HEMP to the power system of another embodiment of the present application, which will not be described here.

[0103] Based on another aspect of the present application, the present application provides a computer readable storage medium, which stores a computer program, the program is executed by a processor to realize the steps of any one of the evaluation method of the damage of the HEMP to the power system.

[0104] Based on another aspect of the present application, the present application provides an electronic device, comprising:

[0105] The computer readable storage medium described above; and

[0106] One or more processors for executing the program in the computer readable storage medium.

[0107] The present application has been described by referring to a few embodiments. However, it is well understood by those skilled in the art that other embodiments, besides those disclosed above and shown in the drawings, are equally "within the scope of the present application.

[0108] Generally, all terms used in the claims are interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise in the specification. All references to "a" or "an" means "at least one" of the referenced item, unless otherwise clearly indicated. The steps of any methods disclosed herein need not be performed in the exact order disclosed, unless explicitly stated.

[0109] Those skilled in the art will appreciate that embodiments of the application can be devised for a method, a system, or a computer program product. Accordingly, the present application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0110] The present application is described in reference to the 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 block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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 illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0111] These computer program instructions can 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 instructions which implement the functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0112] These computer program instructions can 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 illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0113] Finally, it should be noted that the above-mentioned embodiments are merely intended for describing the technical solutions of the present application, but not for limiting it. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that the technical solutions of the present application can still be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement should be covered within the protection scope of the claims of the present application.

Claims

1. A method for evaluating the destructive power of high-altitude electromagnetic pulses on power systems, characterized by, The method comprises: acquiring electromagnetic stress through high-altitude electromagnetic pulse (HEMP) environment E1 component and coupling analysis of each functional component in the power system; acquiring effect intensity obtained after each functional component is subjected to HEMP effect test; comparing electromagnetic stress and effect intensity corresponding to each functional component to determine the state of each functional component, and determining the state of the equipment according to the state of each functional component; generating an initial fault scene of the power system according to the state of the equipment, carrying out cascade failure analysis on the basis of the initial fault scene to determine the intermediate state of the power system after the action of the E1 component; determining the geomagnetically induced current and transformer reactive power generated by the power system after the action of the HEMP environment E3 component on the power system based on the intermediate state of the power system; determining the final state of the power system after the action of the E3 component based on the geomagnetically induced current, transformer reactive power and intermediate state of the power system; determining the destructive power of HEMP on the power system based on the final state and intermediate state of the power system; wherein the determination of the final state of the power system after the action of the E3 component based on the geomagnetically induced current, transformer reactive power and intermediate state of the power system comprises: superimposing the geomagnetically induced current and transformer reactive power on the intermediate state of the power system to determine the operating state offset of the power system; carrying out power cascade failure analysis based on the operating state offset of the power system to determine the exit timing of the power system equipment elements; determining the final state of the power system according to the exit timing; wherein the determination of the destructive power of HEMP on the power system based on the final state and intermediate state of the power system comprises: determining the load loss in the E1 component action stage and the E3 component action stage respectively according to the final state and intermediate state of the power system, and fusing the load losses according to the weights corresponding to different loads to determine the comprehensive load loss; evaluating the destructive power of high-altitude electromagnetic pulse on the power system according to the comprehensive load loss.

2. The method of claim 1, wherein, The power system is divided into three levels of subsystem, equipment and functional component, the power system is composed of subsystems, the subsystems are composed of multiple equipment, and each equipment is composed of multiple functional components.

3. The method of claim 1, wherein, The electromagnetic stress comprises coupling voltage peak value, coupling current peak value and total charge entering the equipment generated by the action of HEMP on the functional component.

4. A system for evaluating the destructive power of high-altitude electromagnetic pulses on power systems, characterized by, The system comprises: an electromagnetic stress acquisition unit configured to acquire electromagnetic stress through high-altitude electromagnetic pulse (HEMP) environment E1 component and coupling analysis of each functional component in the power system; an effect intensity acquisition unit configured to acquire effect intensity obtained after each functional component is subjected to HEMP effect test; an equipment state determination unit configured to compare electromagnetic stress and effect intensity corresponding to each functional component to determine the state of each functional component, and determine the state of the equipment according to the state of each functional component; a power system intermediate state determination unit configured to generate an initial fault scene of the power system according to the state of the equipment, carry out cascade failure analysis on the basis of the initial fault scene to determine the intermediate state of the power system after the action of the E1 component; The geomagnetic induction current and transformer reactive power determination unit is configured to determine the geomagnetic induction current and transformer reactive power generated by the power system after the E3 component of the HEMP environment acts on the power system based on the intermediate state of the power system. The power system final state determination unit is configured to determine the final state of the power system after the E3 component acts based on the geomagnetic induction current, transformer reactive power, and intermediate state of the power system. The damage assessment unit is configured to determine the damage of the HEMP to the power system based on the final state and intermediate state of the power system. The power system final state determination unit determines the final state of the power system after the E3 component acts based on the geomagnetic induction current, transformer reactive power, and intermediate state of the power system, including: superimposing the geomagnetic induction current and transformer reactive power on the intermediate state of the power system to determine the operating state offset of the power system; performing power cascade fault analysis based on the operating state offset of the power system to determine the exit timing of the power system equipment elements; determining the final state of the power system according to the exit timing; The damage assessment unit determines the damage of the HEMP to the power system based on the final state and intermediate state of the power system, including: determining the load loss in the E1 component action stage and the E3 component action stage according to the final state and intermediate state of the power system, respectively, and fusing the load loss according to the weight corresponding to different loads to determine the comprehensive load loss; evaluating the damage of the high-altitude electromagnetic pulse to the power system according to the comprehensive load loss.

5. The system of claim 4, wherein, The power system is divided into three levels of subsystems, devices, and functional components, the power system is composed of subsystems, the subsystems are composed of multiple devices, and each device is composed of multiple functional components.

6. The system of claim 4, wherein, The electromagnetic stress includes the coupling voltage peak value, coupling current peak value, and total charge entering the device generated by the HEMP acting on the functional component.

7. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the steps of the method of any one of claims 1-3.

8. An electronic device, comprising: including: the computer readable storage medium of claim 7; and one or more processors configured to execute the program in the computer readable storage medium.

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