CN114236447A

CN114236447A - PMU detection and calibration method and device for transformer substation, computer equipment and storage medium

Info

Publication number: CN114236447A
Application number: CN202111394449.7A
Authority: CN
Inventors: 林其雄; 汤寿泉; 姚晓健; 蔡希鹏; 陆国俊
Original assignee: Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-03-25

Abstract

The application discloses a PMU detection and verification method and device for a transformer substation, computer equipment, a storage medium and a computer program product. This application is through the system architecture of PMU detection check-up equipment for analytical substation, the structure and the function of each submodule piece are researched, error and the dynamic response characteristic of PMU device measured data can be detected, whole electric power system's operation safety is ensured and PMU device's efficiency is improved, the work load of follow-up maintenance is reduced simultaneously, prevent to make it can't provide data such as true effectual voltage, electric current phasor and lead to electric power system's unstability because of the not enough problem of performance of PMU device. The method comprises the following steps: acquiring an initialization parameter; responding to the detection scheme selection instruction, and establishing communication connection with the PMU device based on the initialization parameters; wherein the detection scheme selection instruction comprises a target detection scheme; and if the communication connection is successfully established, detecting the PMU device according to the target detection scheme to obtain a detection result.

Description

PMU detection and calibration method and device for transformer substation, computer equipment and storage medium

Technical Field

The application relates to the technical field of smart power grids, in particular to a PMU detection and verification method and device for a transformer substation, computer equipment, a computer readable storage medium and a computer program product.

Background

Since the nineties of the 20 th century, the synchronous phasor measurement unit PMU (phasor measurement unit) based on the synchronous measurement technology has been widely accepted worldwide. The PMU is a phasor measurement unit formed by using a GPS (Global Positioning System) second pulse as a synchronous clock, can be used to measure a voltage vector of each node in a transient process of a power System, has been widely applied to the fields of dynamic monitoring, state estimation, System protection, regional stability control, System analysis and prediction of the power System, and is an important device for ensuring safe operation of a power grid.

PMU is installed at an important transformer substation and a power plant of the power system, a real-time dynamic monitoring system of the power system is constructed, and monitoring and analysis of the dynamic process of the power system are realized through a dispatching center and an analysis center station. The system becomes a main Data source of a dynamic real-time Data platform of a power system dispatching center, And is gradually combined with an SCADA/EMS (Supervisory Control And Data Acquisition, Supervisory Control And supervision) system (EMS is an energy management system, wherein the SCADA is a subsystem in the EMS) And a safety automatic Control system to strengthen the monitoring of the dynamic safety And stability of the power system. However, the main problem at present is to ensure that the PMU in the WAMS (Wide Area Measurement System) has consistent performance, and in the Measurement and control operation process of the PMU device, the Measurement result precision is low, the key data in the transmission process is lost, and the dynamic response speed is slow, so that the voltage and current phasor data provided by the output of the PMU device directly affect the analysis result, thereby causing instability of the power System and misjudgment of faults. Therefore, PMUs that meet the same high performance criteria are an important aspect that directly impacts the overall system performance of the WAMS.

In order to ensure the operation safety of the whole power system, improve the efficiency of the PMU, reduce the workload of subsequent maintenance, and prevent the instability of the power system caused by the fact that the PMU device cannot provide real and effective data such as voltage and current phasor due to the problem of insufficient performance, it is urgent to provide a PMU detection and verification device and a PMU detection and verification method for a transformer substation, which can detect the PMU operation state in real time, for the transformer substation.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a PMU detection verification method for a substation, an apparatus, a computer device, a computer-readable storage medium, and a computer program product for solving the above technical problems.

The purpose of the invention is as follows: the application aims to provide PMU detection and verification equipment and method for the transformer substation, and research functions and design schemes of all component modules of the PMU detection and verification equipment and static and dynamic PMU device testing methods, so that the PMU detection and verification equipment and the PMU device testing method have important supporting effects on improving the safe and stable operation of a power system, ensuring the high reliability of PMU network access and promoting the intelligent development of a power grid.

In a first aspect, the application provides a PMU detection and verification method for a transformer substation. The method comprises the following steps:

acquiring an initialization parameter;

responding to a detection scheme selection instruction, and establishing communication connection with the PMU device based on the initialization parameters; wherein the detection scheme selection instruction comprises a target detection scheme;

and if the communication connection is successfully established, detecting the PMU device according to the target detection scheme to obtain a detection result.

In one embodiment, the method further comprises:

and if the communication connection is failed to be established, returning to the step of establishing the communication connection with the PMU device based on the initialization parameters in response to the detection scheme selection instruction.

In one embodiment, the target detection scheme comprises a static test method; the detecting the PMU device according to the target detection scheme to obtain a detection result includes:

on the premise that the PMU device is successfully connected with the detection equipment, obtaining an actual PMU measurement value; wherein the PMU actual measurement value is an actual measurement result of the PMU on the detection device;

calculating a static error according to a preset static error test index calculation formula based on a theoretical value and the actual PMU measurement value; wherein, the preset static error test index calculation formula is as follows:

wherein E is_error1Static errors of power and amplitude; e_error2The static error of frequency offset and phase angle; a is theoretical value, a1 is actual PMU measurement value, a_bIs a reference value.

In one embodiment, the target detection scheme comprises a dynamic test method; the detecting the PMU device according to the target detection scheme to obtain a detection result includes:

on the premise that the PMU device is successfully connected with the detection equipment, obtaining PMU real-time dynamic data; the actual PMU measurement value is real-time dynamic data detected by the PMU aiming at the detection equipment;

calculating the dynamic response performance precision of the PMU according to a preset experimental mode based on initialization parameters and the real-time dynamic data of the PMU;

and judging whether the dynamic response performance of the PMU meets the requirement or not according to the comparison result between the accuracy of the dynamic response performance of the PMU and a standard value.

In one embodiment, the initialization parameters include source parameters, permission parameters, and verification parameters.

In one embodiment, before the acquiring the initialization parameter, the method further includes:

carrying out data transmission with the PMU through a communication module; and the communication module is used for acquiring the running state data of the PMU through TCP connection and issuing an operation instruction to the PMU.

In a second aspect, the application further provides a PMU detection calibration device for a transformer substation. Applied to the check-up equipment of detection, the device includes:

the initialization parameter acquisition module is used for acquiring initialization parameters;

the communication connection establishing module is used for responding to a detection scheme selection instruction and establishing communication connection with the PMU device based on the initialization parameter; wherein the detection scheme selection instruction comprises a target detection scheme;

and the detection result acquisition module is used for detecting the PMU device according to the target detection scheme to obtain a detection result if the communication connection is successfully established.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps in the PMU detection and verification method for the transformer substation when executing the computer program.

In a fourth aspect, the present application further provides a computer-readable storage medium. The computer readable storage medium has a computer program stored thereon, and the computer program, when executed by a processor, implements the steps in the transformer substation PMU detection verification method embodiment.

In a fifth aspect, the present application further provides a computer program product. The computer program product comprises a computer program, and the computer program realizes the steps in the embodiment of the PMU detection verification method for a substation when executed by a processor.

The PMU detection and calibration method for the transformer substation, the device, the computer equipment, the storage medium and the computer program product are realized by acquiring initialization parameters; responding to the detection scheme selection instruction, and establishing communication connection with the PMU device based on the initialization parameters; wherein the detection scheme selection instruction comprises a target detection scheme; and if the communication connection is successfully established, detecting the PMU device according to the target detection scheme to obtain a detection result. This application is through the system architecture of PMU detection check-up equipment for analytical substation, the structure and the function of each submodule piece are researched, error and the dynamic response characteristic of PMU device measured data can be detected, whole electric power system's operation safety is ensured and PMU device's efficiency is improved, the work load of follow-up maintenance is reduced simultaneously, prevent to make it can't provide data such as true effectual voltage, electric current phasor and lead to electric power system's unstability because of the not enough problem of performance of PMU device.

Drawings

FIG. 1 is a block diagram of an embodiment of a PMU test verification method for a substation;

fig. 2 is a schematic flowchart of a PMU detection verification method for a substation in one embodiment;

fig. 3 is a control flow chart of a PMU detection verification method for a substation in another embodiment;

FIG. 4 is a flow diagram of a method for setting parameters, according to an embodiment;

FIG. 5 is a flow diagram of a PMU static test method in one embodiment;

FIG. 6 is a PMU stand-alone experimental control flow diagram in one embodiment;

FIG. 7 is a flow chart of multi-PMU on-line synchronous experimental control in one embodiment;

FIG. 8 is a diagram of a TCP data segment format, in one embodiment;

FIG. 9 is a flow diagram of a communication module in one embodiment;

fig. 10 is a block diagram illustrating a PMU detection verification apparatus for a substation according to an embodiment;

FIG. 11 is a diagram of the internal structure of a computer device in one embodiment;

fig. 12 is an internal structural view of a computer device in another embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further explained below with reference to the accompanying drawings and specific embodiments. It is understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present application, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present application.

The PMU detection and verification method for the transformer substation provided by the embodiment of the application can be applied to the architecture diagram implemented in FIG. 1, wherein the architecture and the method of the system comprise a parameter setting module, a static test module, a dynamic test module, a PMU single-machine experiment module, a multi-PMU online synchronization experiment module and a communication module. The parameter setting module is used for initializing detection and calibration equipment, error and performance test are carried out on the PMU device through the static and dynamic test modules, the inconsistency of PMU running data and experimental data is analyzed based on PMU single-machine experiment module detection, the multi-PMU online synchronous experiment module is used for carrying out experiments on each transformer substation at the same time, analysis and calibration are further carried out on the consistency of WAMS (Wide area measurement System) transmission data, a communication module for connecting the detection and calibration equipment and the PMU device is researched, the connection can be established based on a TCP protocol to obtain the running state data of the PMU to be detected and issue instruction operation to the PMU.

Synchrophasor measurement units (PMUs) are an emerging technology in power systems with many advantages in wide area interference analysis, protection and control. The function of the PMU is to continuously monitor and measure the power angle of the generator and the magnitude and phase angle of the respective bus voltage and current on-line. PMU is installed in each generator and hub transformer substation in the system and is connected with the master station through a communication network. Each PMU unit collects vectors and power angles through GPS time synchronization at the same moment, and transmits the vectors and the power angles to a control center in real time after time scales are pasted on measured parameters. However, the accuracy and real-time performance of PMU measurement data are still insufficient, and analysis of errors and dynamic characteristic responses of data such as power angles, amplitudes and phase angles of voltage and current output by the PMU measurement data becomes a research focus.

In an embodiment, as shown in fig. 2, a PMU detection and verification method for a substation is provided, which is described by taking the method as an example applied to the detection and verification device in fig. 1, and includes the following steps:

step S201, acquiring initialization parameters;

specifically, with reference to the control flow chart in another embodiment shown in fig. 3, first setting PMU parameter input, selecting a detection scheme and a detection mode, then establishing communication connection between the detection device and the PMU device, and determining whether the connection is successful, and if not, returning to continue establishing connection between the detection device and the PMU device; if the connection is successful, issuing a command to the equipment and detecting according to the scheme, simultaneously judging whether the selected scheme is abnormal or not, and if so, returning to the PMU detection scheme selection; and if the data is normal, obtaining PMU running data, and subsequently carrying out detection operations such as calculation error and dynamic performance analysis.

In this step, a parameter setting method is parameter initialization, and the initialization parameters include a source parameter, an authority parameter, and a verification parameter. The specific process is shown in fig. 4, and fig. 4 is a flow chart of the parameter setting method, wherein the initialization parameters include source parameter setting, authority parameter setting, and verification parameter setting, and the source parameter setting includes factory parameter setting, PMU, and device communication parameter setting. The factory parameter setting is mainly the basic factory information of the PMU device, such as the rated parameter of the running state, the factory model and serial number, the production place, the validity period and other information. The PMU and equipment communication parameter setting is mainly that the IP address and the port of communication data between the PMU and the equipment are required to be set consistently; the authority parameter setting comprises the setting of login authority of a manager, the setting of data uploading and downloading authority. The setting of the login authority of the manager mainly specifies the authority of the operator when the operator enters the upper computer to operate the operator. The setting of data uploading and downloading authorities mainly refers to authorities required by management workers for manually or automatically managing the running data of the management workers, so that important information is prevented from being leaked; the checking parameter setting comprises PMU detection checking setting, authentication certificate management and setting operation user information. The PMU detection verification setting refers to setting data to be detected by the PMU and verifying the data. The certificate management is used for managing internal and external certificates in a unified way, and the digital certificate adopts a public key system, namely, a pair of matched keys is used for encrypting and decrypting. Each user sets a specific private key (private key) only known to the user, and decrypts and signs by using the private key; meanwhile, a public key (public key) is set and published by the user, and is shared by a group of users for encrypting and verifying signatures. The setting operation user information refers to basic information setting of a user who uses the apparatus, such as information authentication of name, age, occupation, and the like.

Step S202, responding to a detection scheme selection instruction, and establishing communication connection with a PMU device based on the initialization parameters; wherein the detection scheme selection instruction comprises a target detection scheme;

specifically, the target detection scheme includes a static test method, where on the premise that the PMU device and the detection device successfully establish a connection, an actual PMU measurement value is obtained; wherein the PMU actual measurement value is an actual measurement result of the PMU on the detection device;

wherein E is_error1Static errors of power and amplitude; e_error2The static error of frequency offset and phase angle;

is a theoretical value of a₁For actual measurement of PMU, a_bIs a reference value.

Specifically, the static test method performs error calculation analysis on the data values collected by the PMU according to the specification, and a control flow of the static test method is shown in fig. 5. Firstly, inputting information to be detected into a checking device, then selecting a proper detection scheme, establishing communication connection between the detection device and the PMU, judging whether the connection is successful or not, returning to continuously establish the connection with the PMU if the connection is unsuccessful,

and step S203, if the communication connection is successfully established, detecting the PMU device according to the target detection scheme to obtain a detection result.

Specifically, if the result is successful, the configuration parameter information is obtained, the selected detection scheme is issued, meanwhile, the measurement result acquired by the PMU is obtained in real time, the static error of the PMU is calculated according to the test index, and the detection and analysis are carried out on the precision of the PMU under the single-machine work. The static error test index is shown in the above formula (1) and formula (2),

wherein E is_error1Errors of power and amplitude; e_error2The error of frequency offset and phase angle;

for theoretical values, a1 is the actual PMU measurement, a_bThe reference value is generally defined as 1.2 times of rated amplitude, and the power reference value is defined as 3 times of the product of the voltage and current reference values.

In an embodiment, if the communication connection is failed to be established, returning to the step of establishing a communication connection with the PMU device based on the initialization parameter in response to the detection scheme selection instruction.

Under general conditions, the transformer substation adopts the static test mode of the conventional internal network test of the PMU to detect the single PMU. The test mode carries out detection and verification of voltage and current under the condition of unified standard source control, a GPS is used as a reference source of a synchronous clock, a synchronous clock signal of the voltage and the current is provided for a measured PMU at the same time, the signal is provided by a standard time scale source, voltage and current data of the measured PMU are further collected, and the PMU detection and verification equipment can simultaneously obtain synchronous data collected by the standard time scale source and real-time voltage and current synchronous data of the measured PMU, so that data support is provided for subsequent single-machine experiments.

The error detection of the static test method mainly analyzes two important indexes of amplitude and phase angle. The contents of the specific detection scheme are shown in Table 1.

TABLE 1 static error test protocol

In step S202, the target detection scheme further includes a dynamic testing method, where on the premise that the PMU device and the detection device are successfully connected, real-time dynamic PMU data is obtained; the actual PMU measurement value is real-time dynamic data detected by the PMU aiming at the detection equipment; calculating the dynamic response performance precision of the PMU according to a preset experimental mode based on initialization parameters and the real-time dynamic data of the PMU; and judging whether the dynamic response performance of the PMU meets the requirement or not according to the comparison result between the accuracy of the dynamic response performance of the PMU and a standard value.

Specifically, the flow of the dynamic test method is similar to that of the static test, but the dynamic test method obtains real-time dynamic data of the PMU, and in order to research the dynamic response, the detection mode is also a conventional internal network test of the PMU, and the detection content is different from that of the static test. The dynamic performance test can detect PMU dynamic data according to source parameters set by a parameter setting method, is mainly used for simulating complex dynamic response characteristics of the PMU in the running state of a power system, such as power oscillation and low-frequency oscillation, judges that a device has faults according to the inconsistency of waveforms of the PMU, and ensures that the performance precision of the PMU device under non-sinusoidal signals can meet the requirement. The dynamic performance test protocol contents are shown in table 2.

Table 2 dynamic performance test protocol

In one embodiment, the control flow of the PMU stand-alone experimental module in the present application is shown in fig. 6. The detection equipment needs to communicate with the PMU to be measured so as to obtain stored historical and real-time data, including event records, wave recording and dynamic data, and analyze and research the PMU. And the communication established between the two devices can adopt an FTP file form to acquire the data of the PMU to be measured at the background, and all the data of the current PMU can be acquired after the connection is successful by verifying that the user is connected to the server, so as to further analyze the data. The data can also be acquired by adopting a command issuing mode, TCP connection is established between the detection equipment and the PMU to be detected, and the connection can be established when communication parameters such as IP addresses, ports and the like of communication data between the detection equipment and the PMU to be set to be consistent, so that the data is acquired, analyzed and checked to be consistent with the background data.

Utilize many PMU online synchronization experiment module to assign test instruction to a plurality of PMUs of transformer substation simultaneously, improve the rationality and the authenticity of data. In the actual experiment process, the detection and calibration equipment can be used as a master station or a slave station due to different functions of the test nodes, and if the detection and calibration equipment is used as the master station in the synchronous experiment process, the detection equipment has a control function in the experiment; if the PMU is used as the slave station, the PMU is tested according to the test command and the scheme issued by the master station control center, and the test result is uploaded to the master station. The experimental control flow is shown in fig. 7.

The multi-PMU online synchronous experiment module performs experiments on each node of a power grid, namely each transformer substation, at the same time through GPS module signals, acquires phasors of each node, simulates various running states of the power grid, and further analyzes and checks the consistency of WAMS transmission data. The multi-PMU on-line synchronization experiment is identical to the dynamic performance testing scheme, as shown in table 2 above. Firstly, judging whether the detection equipment is used as a master station, if so, setting a PMU detection scheme and communication parameters with a slave station, then carrying out communication connection between the master station and the slave station, establishing a master-slave unified time reference according to a GPS clock, and further issuing a command to the slave station and carrying out operations such as PMU detection and the like according to the scheme; if the equipment is used as a slave station, the parameters of the slave station are set, the IP channel and the port which are the same as those of the master station are set to establish master-slave connection, a detection command issued by the master station is received and executed, and the result is uploaded to the master station after the detection command is finished.

In an embodiment, before the acquiring the initialization parameter, the method further includes: carrying out data transmission with the PMU through a communication module; and the communication module is used for acquiring the running state data of the PMU through TCP connection and issuing an operation instruction to the PMU.

Specifically, the communication module is used as a data transmission bridge between the detection and verification device and the PMU to be measured, and the connection is established based on the TCP protocol so as to obtain the running state data of the PMU to be measured and issue an instruction operation to the PMU. TCP is one of the basic protocols of the Internet protocol suite, and the data format thereof is shown in fig. 8. It provides various functions, such as the reliable, non-sequential transfer of a byte stream from a program on one computer to another program on another computer. Advantages of the TCP protocol include the following:

(1) data transmission: TCP is capable of transmitting a continuous stream of data in segments between users for transmission over a network.

(2) High reliability: TCP is able to recover data that may be corrupted, lost, or duplicated on the network. This is accomplished by assigning a sequence number to each segment transmitted over the network and receiving a positive Acknowledgement (ACK) upon successful transmission. If the ACK signal is not received within a certain time interval, the data is retransmitted. By using the sequence numbers, the receiver ends the sequence segments in the correct order. In TCP, corrupted data is processed by adding a checksum to each data segment being transmitted, and finally checking at the receiver, and finally discarding the corrupted data segment.

(3) Multiplexing: TCP provides a set of ports within each host so that multiple processes within a single host can communicate using TCP at the same time. When the network and host addresses are connected together, a Socket (Socket) is formed that uniquely identifies each connection to the Socket. Thus, one port can be used for multiple connections simultaneously.

(4) Connecting: a connection is a combination of socket, sequence number, and window size. Each connection is specified by a pair of sockets that identify both sides, and each connection is unique. When two processes want to communicate, their TCP must first establish a connection (initialize both parties' state information). Once the communication is complete, the connection must be terminated or closed.

In the actual communication process, the PMU device is defaulted as a client substation, and the WAMS is used as a server main station. In order to detect the PMU device, a sub-station must be added in the PMU sub-station, and the detection and calibration equipment can be used as a server main station of the PMU device, and can issue control commands to the sub-station and acquire the operation data of the sub-station. Two communication channels are arranged between the detection equipment and the PMU device, namely a data channel and a management channel which are both based on TCP protocol for information transmission. The data channel is a channel for transmitting synchronous data to the detection and calibration equipment by the PMU device, comprises measured data such as measured voltage, current amplitude, phase angle, frequency offset and the like, and is a unidirectional channel; the management channel is a bidirectional channel, the detection equipment can issue a command to the PMU device through the management channel, and the PMU device can also submit a request operation to the detection equipment, and the management channel is a transmission channel for configuring file information, command information and recording event files between the management channel and the PMU device.

The flow of the communication module is shown in fig. 9, and the detection device may send a request for establishing a management channel and a monitoring data flow channel to the PMU at the same time. If the PMU device receives the request command, a management channel between the detection equipment and the PMU device is established; if the application of 'establishing data channel' of the PMU device is received, and the IP address is reasonable, the data channel is established, and the running data of the PMU is received.

It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the embodiment of the application also provides a transformer substation PMU detection and verification device for realizing the transformer substation PMU detection and verification method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the method, so that specific limitations in the embodiment of the PMU detection and verification device for one or more substations provided below can be referred to the limitations on the PMU detection and verification method for the substation, and details are not repeated herein.

In one embodiment, as shown in fig. 10, there is provided a PMU testing verification apparatus 1000 for a substation, including: an initialization parameter obtaining module 1001, a communication connection establishing module 1002 and a detection result obtaining module 1003, wherein:

an initialization parameter obtaining module 1001 configured to obtain an initialization parameter;

a communication connection establishing module 1002, configured to establish, in response to the detection scheme selection instruction, a communication connection with the PMU device based on the initialization parameter; wherein the detection scheme selection instruction comprises a target detection scheme;

a detection result obtaining module 1003, configured to, if the communication connection is successfully established, detect the PMU device according to the target detection scheme to obtain a detection result.

In an embodiment, the communication connection establishing module 1002 is further configured to return to the step of establishing a communication connection with the PMU device based on the initialization parameter in response to the detection scheme selection instruction if the communication connection is failed to be established.

In an embodiment, the target detection scheme includes a static test method, and the detection result obtaining module 1003 is further configured to: on the premise that the PMU device is successfully connected with the detection equipment, obtaining an actual PMU measurement value; wherein the PMU actual measurement value is an actual measurement result of the PMU on the detection device; calculating a static error according to a preset static error test index calculation formula based on a theoretical value and the actual PMU measurement value; the preset static error test index calculation formula is shown in the above formulas (1) - (2), and is not described herein again.

In one embodiment, the target detection scheme comprises a dynamic test method; the detection result obtaining module 1003 is further configured to: on the premise that the PMU device is successfully connected with the detection equipment, obtaining PMU real-time dynamic data; the actual PMU measurement value is real-time dynamic data detected by the PMU aiming at the detection equipment; calculating the dynamic response performance precision of the PMU according to a preset experimental mode based on initialization parameters and the real-time dynamic data of the PMU; and judging whether the dynamic response performance of the PMU meets the requirement or not according to the comparison result between the accuracy of the dynamic response performance of the PMU and a standard value.

In an embodiment, the apparatus further includes a data transmission unit, configured to perform data transmission with the PMU through a communication module; and the communication module is used for acquiring the running state data of the PMU through TCP connection and issuing an operation instruction to the PMU.

All or part of each module in the PMU detection and verification device for the transformer substation can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 11. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured 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, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing detection data of each device of the power grid. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize a PMU detection verification method for a transformer substation.

In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 12. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile 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 an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to realize a PMU detection verification method for a transformer substation. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the configurations shown in fig. 11-12 are only block diagrams of some of the configurations relevant to the present disclosure, and do not constitute a limitation on the computing devices to which the present disclosure may be applied, and that a particular computing device may include more or less components than shown, or combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, which includes a memory and a processor, where the memory stores a computer program, and the processor executes the computer program to implement the steps in the transformer substation PMU detection verification method embodiment.

In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps in the transformer substation PMU detection verification method embodiment as described above.

In one embodiment, a computer program product is provided, which includes a computer program that, when executed by a processor, implements the steps in the transformer substation PMU detection verification method embodiment as described above.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A PMU detection and verification method for a transformer substation is applied to detection and verification equipment, and comprises the following steps:

acquiring an initialization parameter;

2. The method of claim 1, further comprising:

3. The method of claim 1, wherein the target detection scheme comprises a static test method; the detecting the PMU device according to the target detection scheme to obtain a detection result includes:

for theoretical values, a1 is the actual PMU measurement, a_bIs a reference value.

4. The PMU detection verification method for the substation according to claim 1, characterized in that the target detection scheme includes a dynamic test method; the detecting the PMU device according to the target detection scheme to obtain a detection result includes:

5. The method of claim 1, wherein the initialization parameters comprise source parameters, permission parameters, and check parameters.

6. The method of claim 1, wherein before the obtaining initialization parameters, the method further comprises:

7. The utility model provides a PMU detects calibration equipment for transformer substation which characterized in that is applied to and detects calibration equipment, the device includes:

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 6.

9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the method of any one of claims 1 to 6 when executed by a processor.