A method and system for predicting relay protection faults in power systems of gas turbine power plants

Abstract

The present invention discloses a method and system for predicting relay protection faults in a power system of a gas turbine power plant, including: establishing a simulation model of a power system of a gas turbine power plant according to the distribution parameters of equipment components, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant; obtaining historical fault parameters of the power system of the gas turbine power plant, analyzing the cause, frequency and impact range of relay protection faults in combination with an exhaustive method, and performing a probability analysis on relay protection faults; comparing the real-time operating data of the power system of the gas turbine power plant with the historical normal operating parameters, obtaining the probability of equipment component or / and line failure, and displaying the relay protection fault prediction results in real time in combination with the simulation model of the power system of the gas turbine power plant. The possible faults of the relay protection can be accurately displayed through the model, so that users can respond to and handle faults in a timely manner, reduce accident losses, and improve the overall system safety.

Description

Technical Field

[0001] The present invention relates to the technical field of relay protection fault prediction of a power system of a gas turbine power plant, and in particular to a method and system for predicting relay protection fault of a power system of a gas turbine power plant. Background Art

[0002] At present, as the scale of power systems of gas turbine power plants continues to expand, the scale of power systems of gas turbine power plants is also getting larger, and they need to be able to withstand more random faults and disturbances.

[0003] At the same time, the uncertainty of power grid operation is also gradually increasing. The relay protection function may face the risk of failure or even collapse at any time. Most of the relay protection failures are caused by internal equipment component failures or line failures. When the relay protection fails, it causes the problem of power transmission loss in the power system, and in severe cases, it will cause the serious consequence of large-scale power outages. It may even cause the entire power system of the gas turbine power plant to collapse, resulting in irreversible consequences. Therefore, at this stage, a method for predicting relay protection failures in the power system of a gas turbine power plant is urgently needed. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the present invention provides a method and system for predicting relay protection faults in a power system of a gas turbine power plant, which can solve the problems mentioned in the background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for predicting relay protection faults in a power system of a gas turbine power plant, comprising:

[0008] According to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant, a simulation model of the power system of the gas turbine power plant is established;

[0009] Obtain historical fault parameters of the power system of the gas turbine power plant, analyze the causes, frequencies and impact range of relay protection faults by using the exhaustive method, and perform probability analysis on relay protection faults;

[0010] The real-time operating data of the power system of the gas turbine power plant is compared with the historical normal operating parameters to obtain the probability of equipment component and / or line failure, and the relay protection fault prediction result is displayed in real time in combination with the power system simulation model of the gas turbine power plant.

[0011] As a preferred solution of the method for predicting relay protection faults of a power system of a gas turbine power plant according to the present invention, the power system simulation model of the gas turbine power plant includes a power system simulation model of the gas turbine power plant established according to a fixed scale, a signal light that is more than the sum of the number of equipment components and lines, the signal light is a three-color display light, a server connected to a mobile terminal, an operation switch of the power system of the gas turbine power plant, and a data receiving module for acquiring data;

[0012] Each component in the power system simulation model of the gas turbine power plant has a fixed number. When fault prediction is performed, the power system simulation model of the gas turbine power plant can directly see the predicted fault location, and the corresponding location data is transmitted to the mobile terminal through the fixed number.

[0013] As a preferred solution of the method for predicting relay protection faults in the power system of a gas turbine power plant according to the present invention, the probability analysis of relay protection faults includes:

[0014] The probability of relay protection failure caused by equipment component failure is as follows:

[0015]

[0016] Where i represents the equipment component, i is a natural number, and the maximum value of i is the total number of equipment components in the power system of the gas turbine power plant, δ S Indicates the proportion of the impact of the relay protection fault, ε i is the probability of failure of equipment component i, φ i is the probability of relay protection failure caused by equipment component i;

[0017]

[0018]

[0019]

[0020] Among them, S g is the area affected by the relay protection fault, S T is the operating range of the power system of the gas turbine power plant, C i is the number of failures of the i-th equipment component in the historical failure parameters, C i,s is the total number of equipment component failures in the historical failure parameters, C s,j is the total number of times that equipment components in the historical fault parameters cause relay protection failures, C j,iThe number of times the i-th equipment component in the historical fault parameters fails and causes relay protection failure.

[0021] As a preferred solution of the method for predicting relay protection faults in the power system of a gas turbine power plant according to the present invention, the probability analysis of relay protection faults also includes:

[0022] The probability of relay protection failure caused by line fault is as follows:

[0023]

[0024] Where k represents the line, k is a natural number, and the maximum value of k is the total number of lines in the power system of the gas turbine power plant, δ L Indicates the proportion of the impact of the relay protection fault, ε k is the probability of failure of line k, φ k is the probability of relay protection failure caused by line k;

[0025]

[0026]

[0027]

[0028] Among them, L g L is the line length within the range affected by the relay protection fault, T is the total length of the lines within the operating range of the power system of the gas turbine power plant, C k is the number of faults that occurred on the kth line in the historical fault parameters, C k,x is the total number of line faults in the historical fault parameters, C l,k is the total number of relay protection failures caused by line faults in historical fault parameters, C x,l It is the number of times the kth line fault in the historical fault parameters causes relay protection failure.

[0029] As a preferred solution of the method for predicting relay protection faults in the power system of a gas turbine power plant according to the present invention, the probability analysis of relay protection faults also includes:

[0030] The probability of relay protection failure caused by equipment component failure and line failure at the same time is as follows:

[0031] P T =α1·P s (i)+α2·P x (k)

[0032] Among them, α1 is the weight of the relay protection fault caused by the equipment component failure, and α2 is the weight of the relay protection fault caused by the line fault.

[0033] As a preferred solution of the method for predicting relay protection faults in a power system of a gas turbine power plant according to the present invention, the method of obtaining the probability of equipment component or / and line failure includes:

[0034]

[0035]

[0036]

[0037] in, Real-time operating data of equipment components and / or lines, Historical normal operating parameters of equipment components and / or lines, P s,x is the probability of equipment component and / or line failure.

[0038] As a preferred solution of the method for predicting relay protection faults in the power system of a gas turbine power plant according to the present invention, the real-time display of the relay protection fault prediction results includes displaying the relay protection fault probability in real time at the corresponding position of the power system simulation model of the gas turbine power plant, and transmitting it to the mobile terminal when a first-level warning is generated.

[0039] The relay protection failure probability is the product of the equipment component or / and line failure probability and the equipment component or / and line failure causing the relay protection failure probability;

[0040] When the probability of relay protection failure is greater than the first threshold, the signal lights of the corresponding equipment components and / or lines in the power system simulation model of the gas turbine power plant turn red, and the fixed numbers of the corresponding parts are transmitted to the mobile terminal. At this time, it is determined that the relay protection failure has occurred, and the user is notified to go to the site to repair the relay protection failure;

[0041] When the probability of relay protection failure is less than the first threshold value and greater than the second threshold value, the signal light of the corresponding equipment component and / or line in the power system simulation model of the gas turbine power plant turns yellow, and the fixed number of the corresponding part is transmitted to the mobile terminal, and the user is notified to go to the site to repair the equipment component and / or line failure to avoid the occurrence of relay protection failure;

[0042] When the probability of relay protection failure is less than the second threshold, the signal lights of the corresponding equipment components and / or lines in the power system simulation model of the gas turbine power plant turn green. At this time, it is determined that the probability of relay protection failure is low, and the user is notified to directly debug and reset the probability of relay protection failure to zero.

[0043] A fuel-turbine power plant power system relay protection fault prediction system, characterized by comprising a model building module, a probability solving module and a prediction module,

[0044] A model building module, wherein the model building module is used to build a simulation model of the power system of the gas turbine power plant according to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant;

[0045] A probability solving module, which is used to obtain historical fault parameters of the power system of the gas turbine power plant, analyze the cause, frequency and impact range of the relay protection fault by combining the exhaustive method, and perform probability analysis on the relay protection fault;

[0046] The prediction module is used to compare the real-time operating data of the power system of the gas turbine power plant with the historical normal operating parameters, obtain the probability of equipment component and / or line failure, and display the relay protection fault prediction results in real time in combination with the power system simulation model of the gas turbine power plant.

[0047] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the above method when executing the computer program.

[0048] A computer-readable storage medium stores a computer program thereon, wherein the computer program implements the steps of the method described above when executed by a processor.

[0049] Beneficial effects of the present invention: The present invention proposes a method and system for predicting relay protection faults in a power system of a gas turbine power plant. According to a conditional probability model, the probability of a relay protection fault caused by a device component fault or a line fault is analyzed, and the probability of a device component fault or a line fault causing a relay protection fault is further obtained, thereby obtaining the probability of a device component fault or a line fault causing a relay protection fault, and the solved probability is substantially displayed. The model can be used to accurately display possible faults in relay protection, so that users can respond to and handle faults in a timely manner, reduce accident losses, and improve overall system safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0051] Figure 1 A method flow chart of a method and system for predicting relay protection faults in a power system of a gas turbine power plant provided by an embodiment of the present invention;

[0052] Figure 2An internal structural diagram of a computer device of a method and system for predicting relay protection faults in a power system of a gas turbine power plant provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0055] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0056] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0057] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Example 1

[0060] Reference Figure 1-2 , which is the first embodiment of the present invention, and provides a method and system for predicting relay protection faults in a power system of a gas turbine power plant, including:

[0061] According to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant, a simulation model of the power system of the gas turbine power plant is established;

[0062] The power system simulation model of the gas turbine power plant includes a power system simulation model of the gas turbine power plant established according to a fixed scale, a signal light that is more than the sum of the number of equipment components and lines, the signal light is a three-color display light, a server connected to a mobile terminal, a power system operation switch of the gas turbine power plant, and a data receiving module for acquiring data;

[0063] It should be noted that each component in the power system simulation model of a gas turbine power plant has a fixed number. When a fault prediction is performed, the power system simulation model of a gas turbine power plant can directly see the predicted fault location, and the corresponding location data is transmitted to the mobile terminal through a fixed number.

[0064] Furthermore, the historical fault parameters of the power system of the gas turbine power plant are obtained, and the causes, frequencies and impact ranges of relay protection faults are analyzed by exhaustive method, and probability analysis is performed on relay protection faults;

[0065] Furthermore, the probability analysis of relay protection failure includes the following:

[0066]

[0067] Where i represents the equipment component, i is a natural number, and the maximum value of i is the total number of equipment components in the power system of the gas turbine power plant, δ S Indicates the proportion of the impact of the relay protection fault, ε i is the probability of failure of equipment component i, φ i is the probability of relay protection failure caused by equipment component i;

[0068]

[0069]

[0070]

[0071] Among them, S g is the area affected by the relay protection fault, S T is the operating range of the power system of the gas turbine power plant, Ci is the number of failures of the i-th equipment component in the historical failure parameters, C i,s is the total number of equipment component failures in the historical failure parameters, C s,j is the total number of times that equipment components in the historical fault parameters cause relay protection failures, C j,i The number of times the i-th equipment component in the historical fault parameters fails and causes relay protection failure.

[0072] Furthermore, the probability analysis of relay protection failure also includes the following:

[0073]

[0074] Where k represents the line, k is a natural number, and the maximum value of k is the total number of lines in the power system of the gas turbine power plant, δ L Indicates the proportion of the impact of the relay protection fault, ε k is the probability of failure of line k, φ k is the probability of relay protection failure caused by line k;

[0075]

[0076]

[0077]

[0078] Among them, L g L is the line length within the range affected by the relay protection fault, T is the total length of the lines within the operating range of the power system of the gas turbine power plant, C k is the number of faults that occurred on the kth line in the historical fault parameters, C k,x is the total number of line faults in the historical fault parameters, C l,k is the total number of relay protection failures caused by line faults in historical fault parameters, C x,l It is the number of times the kth line fault in the historical fault parameters causes relay protection failure.

[0079] Furthermore, the probability analysis of relay protection failure also includes the probability of relay protection failure caused by equipment component failure and line failure at the same time as follows:

[0080] P T =α1·P s (i)+α2·P x (k)

[0081] Among them, α1 is the weight of the relay protection fault caused by the equipment component failure, and α2 is the weight of the relay protection fault caused by the line fault.

[0082] It should be noted that obtaining the probability of equipment component or / and line failure includes:

[0083]

[0084]

[0085]

[0086] in, Real-time operating data of equipment components and / or lines, Historical normal operating parameters of equipment components and / or lines, P s,x is the probability of equipment component and / or line failure.

[0087] Furthermore, the real-time operating data of the power system of the gas turbine power plant is compared with the historical normal operating parameters to obtain the probability of equipment component and / or line failure. Combined with the power system simulation model of the gas turbine power plant, the relay protection fault prediction results are displayed in real time.

[0088] It should be noted that the real-time display of the relay protection fault prediction results includes displaying the relay protection fault probability in real time at the corresponding position of the power system simulation model of the gas turbine power plant, and transmitting it to the mobile terminal when a first-level warning is generated. The relay protection fault probability is the product of the equipment component or / and line failure probability and the equipment component or / and line failure causing the relay protection failure probability;

[0089] Furthermore, when the probability of relay protection failure is greater than a first threshold, the signal lights of the corresponding equipment components and / or lines in the power system simulation model of the gas turbine power plant turn red, and the fixed numbers of the corresponding parts are transmitted to the mobile terminal. At this time, it is determined that the relay protection failure has occurred, and the user is notified to go to the site to repair the relay protection failure.

[0090] Furthermore, when the probability of relay protection failure is less than the first threshold value and greater than the second threshold value, the signal light of the corresponding equipment component or / and line in the power system simulation model of the gas turbine power plant turns yellow, and the fixed number of the corresponding part is transmitted to the mobile terminal, and the user is notified to go to the site to repair the equipment component or / and line failure to avoid the occurrence of relay protection failure;

[0091] Furthermore, when the probability of relay protection failure is less than the second threshold, the signal lights of the corresponding equipment components and / or lines in the power system simulation model of the gas turbine power plant turn green. At this time, it is determined that the probability of relay protection failure is low, and the user is notified to directly debug and reset the probability of relay protection failure to zero.

[0092] Among them, in this patent, the first threshold and the second threshold are the equal division points of the relay protection fault probability interval, that is, the relay protection fault probability interval is divided into three parts, the first threshold is the equal division point close to the maximum probability, and the second threshold is the equal division point close to the minimum probability. There is no restriction here, and the threshold value can be further changed according to specific needs.

[0093] In a preferred embodiment, a fuel-turbine power plant power system relay protection fault prediction system includes a model building module, a probability solving module and a prediction module.

[0094] A model building module, which is used to build a simulation model of the power system of a gas turbine power plant according to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant;

[0095] Probability solving module: The probability solving module is used to obtain the historical fault parameters of the power system of the gas turbine power plant, analyze the cause, frequency and impact range of the relay protection fault by combining the exhaustive method, and perform probability analysis on the relay protection fault;

[0096] The prediction module is used to compare the real-time operating data of the power system of the gas turbine power plant with the historical normal operating parameters, obtain the probability of equipment component and / or line failure, and display the relay protection fault prediction results in real time in combination with the power system simulation model of the gas turbine power plant.

[0097] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0098] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 2As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for predicting relay protection faults in a power system of a gas turbine power plant is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse, etc.

[0099] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0100] According to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant, a simulation model of the power system of the gas turbine power plant is established;

[0101] Obtain historical fault parameters of the power system of the gas turbine power plant, analyze the causes, frequencies and impact range of relay protection faults by using the exhaustive method, and perform probability analysis on relay protection faults;

[0102] The real-time operating data of the power system of the gas turbine power plant is compared with the historical normal operating parameters to obtain the probability of equipment component and / or line failure. Combined with the power system simulation model of the gas turbine power plant, the relay protection fault prediction results are displayed in real time.

[0103] Example 2

[0104] Reference Figure 1-2 , which is an embodiment of the present invention, provides a method and system for predicting relay protection faults in a power system of a gas turbine power plant. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through comparative experiments.

[0105] Table 1 Prediction data of relay protection faults in power system of internal combustion engine power plant in a certain operation cycle

[0106]

[0107]

[0108] When the signal light is on, no matter what color it is, it means that the circuit is unstable and a relay protection failure may occur. At this time, the user needs to pay attention to subsequent changes in the signal light and take appropriate measures based on the changes in the signal light.

[0109] In a preferred embodiment, the fixed numbering is as shown above. The fixed numbering in this patent is a numbering that fits the content of the patent, but is not limited to such numbering. X_*** represents the ***th line, S_*** represents the ***th device component, and the number is named from a fixed direction, which can be from top to bottom and from left to right.

[0110] The present invention proposes a method and system for predicting relay protection faults in a power system of a gas turbine power plant. According to a conditional probability model, the probability of a relay protection fault caused by a device component fault or a line fault is analyzed, and the probability of a device component fault or a line fault causing a relay protection fault is further obtained, thereby obtaining the probability of a device component fault or a line fault causing a relay protection fault, and the solved probability is substantially displayed. The model can be used to accurately display possible faults of the relay protection, so that users can respond to and handle faults in a timely manner, reduce accident losses, and improve overall system safety.

[0111] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0112] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0113] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0114] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0115] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0116] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0117] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for predicting relay protection faults in a power system of a gas turbine power plant, characterized in that: include, According to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant, a simulation model of the power system of the gas turbine power plant is established; Obtain historical fault parameters of the power system of the gas turbine power plant, analyze the causes, frequencies and impact range of relay protection faults by using the exhaustive method, and perform probability analysis on relay protection faults; The probability analysis of relay protection faults includes: The probability of relay protection failure caused by equipment component failure is as follows: Where i represents the equipment component, i is a natural number, and the maximum value of i is the total number of equipment components in the power system of the gas turbine power plant, δ S Indicates the proportion of the impact of the relay protection fault, ε i is the probability of failure of equipment component i, φ i is the probability of relay protection failure caused by equipment component i; Among them, S g is the area affected by the relay protection fault, S T is the operating range of the power system of the gas turbine power plant, C i is the number of failures of the i-th equipment component in the historical failure parameters, C i,s is the total number of equipment component failures in the historical failure parameters, C s,j is the total number of times that equipment components in the historical fault parameters cause relay protection failures, C j,i is the number of times the i-th equipment component in the historical fault parameters causes a fault that leads to a relay protection fault; The probability analysis of relay protection faults also includes: The probability of relay protection failure caused by line fault is as follows: Where k represents the line, k is a natural number, and the maximum value of k is the total number of lines in the power system of the gas turbine power plant, δ L Indicates the proportion of the impact of the relay protection fault, ε k is the probability of failure of line k, φ k is the probability of relay protection failure caused by line k; Among them, L g L is the line length within the range affected by the relay protection fault, T is the total length of the lines within the operating range of the power system of the gas turbine power plant, C k is the number of faults that occurred on the kth line in the historical fault parameters, C k,x is the total number of line faults in the historical fault parameters, C l,k is the total number of relay protection failures caused by line faults in historical fault parameters, C x,l is the number of times the kth line in the historical fault parameters generates a fault that causes a relay protection fault; The probability analysis of relay protection faults also includes: The probability of relay protection failure caused by equipment component failure and line failure at the same time is as follows: P T =α1·P s (i)+α2·P x (k) Among them, α1 is the weight of the relay protection fault caused by the equipment component failure, and α2 is the weight of the relay protection fault caused by the line fault; Compare the real-time operating data of the power system of the gas turbine power plant with the historical normal operating parameters to obtain the probability of equipment component and / or line failure, and display the relay protection fault prediction results in real time in combination with the power system simulation model of the gas turbine power plant; The obtaining of the probability of equipment component or / and line failure comprises: in, Real-time operating data of equipment components and / or lines, Historical normal operating parameters of equipment components and / or lines, P s,x is the probability of equipment component or / and line failure; The probability of relay protection failure is the product of the probability of equipment component and / or line failure and the probability of relay protection failure caused by equipment component and / or line failure.

2. The method for predicting relay protection faults in a power system of a gas turbine power plant according to claim 1, characterized in that: The power system simulation model of the gas turbine power plant includes a power system simulation model of the gas turbine power plant established according to a fixed scale, a signal light that is more than the sum of the number of equipment components and lines, the signal light is a three-color display light, a server connected to a mobile terminal, a power system operation switch of the gas turbine power plant, and a data receiving module for acquiring data; Each component in the power system simulation model of the gas turbine power plant has a fixed number. When fault prediction is performed, the power system simulation model of the gas turbine power plant can directly see the predicted fault location, and the corresponding location data is transmitted to the mobile terminal through the fixed number.

3. The method for predicting relay protection faults in a power system of a gas turbine power plant according to claim 2, characterized in that: The real-time display of the relay protection fault prediction result includes displaying the relay protection fault probability in real time at the corresponding position of the power system simulation model of the gas turbine power plant, and transmitting it to the mobile terminal when a first-level warning is generated. When the probability of relay protection failure is greater than the first threshold, the signal lights of the corresponding equipment components and / or lines in the power system simulation model of the gas turbine power plant turn red, and the fixed numbers of the corresponding parts are transmitted to the mobile terminal. At this time, it is determined that the relay protection failure has occurred, and the user is notified to go to the site to repair the relay protection failure; When the probability of relay protection failure is less than the first threshold value and greater than the second threshold value, the signal light of the corresponding equipment component and / or line in the power system simulation model of the gas turbine power plant turns yellow, and the fixed number of the corresponding part is transmitted to the mobile terminal, and the user is notified to go to the site to repair the equipment component and / or line failure to avoid the occurrence of relay protection failure; When the probability of relay protection failure is less than the second threshold, the signal lights of the corresponding equipment components and / or lines in the power system simulation model of the gas turbine power plant turn green. At this time, it is determined that the probability of relay protection failure is low, and the user is notified to directly debug and reset the probability of relay protection failure to zero.

4. A system using the method for predicting relay protection faults in a power system of a gas turbine power plant as claimed in claim 1, characterized in that: Including model building module, probability solving module and prediction module, A model building module, wherein the model building module is used to build a simulation model of the power system of the gas turbine power plant according to the equipment component distribution parameters, line connection parameters, equipment type parameters and historical operation data of the power system of the gas turbine power plant; A probability solving module, which is used to obtain historical fault parameters of the power system of the gas turbine power plant, analyze the cause, frequency and impact range of the relay protection fault by combining the exhaustive method, and perform probability analysis on the relay protection fault; The prediction module is used to compare the real-time operating data of the power system of the gas turbine power plant with the historical normal operating parameters, obtain the probability of equipment component and / or line failure, and display the relay protection fault prediction results in real time in combination with the power system simulation model of the gas turbine power plant.

5. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

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