State control system for relay protection safe operation

Abstract

The invention discloses a state control system for relay protection safety operation, which belongs to the technical field of relay protection and comprises a master station module, an application service module, a substation module, a communication module, an intelligent terminal, a data acquisition module and an operation management module. The master station module is bidirectionally connected with the application service module, and the application service module is bidirectionally connected with the substation module; the intelligent terminal is bidirectionally connected with the data acquisition module; the relay protection information collection system can provide reliable guarantee for safe operation of a power grid and reduce the occurrence rate of faults, so that the operation cost is relatively reduced, the economic benefits are improved, the relay protection device plays an important role in protecting the safety of the system in the daily operation process of the power system, and the safety of the system is improved. By means of the relay protection device, faults and problems possibly existing in the power system can be checked in time, abnormal operation states can be found in time, correction and adjustment are carried out in time, and therefore normal operation of the power system is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of relay protection, and in particular, relates to a state control system for safe operation of relay protection. Background Art

[0002] In recent years, with the continuous development of power grids, the power system has higher and higher requirements for safe, stable and economical operation. Timely and accurate analysis of fault and protection action information and full use of fault data information are of great significance to improving the operation level of relay protection and safety automatic devices. The application of power grid relay protection fault information management system has continuously improved the comprehensive management, analysis and application level of secondary equipment. As one of the important analysis methods of power grid, it is widely used in various power grids and has gradually produced good economic benefits and effects. Relay protection devices are used to send warning signals to operating duty personnel in time when power components in the power system or the power system itself fails and endangers the safe operation of the power system, or directly send tripping commands to the controlled circuit breakers to terminate the development of these events. An automated measure and equipment.

[0003] The data collection and intelligent analysis system for the operation status of the relay protection device was disclosed on 2013-08-14, and the publication number is CN103245835A. Its main technical features are: it includes a handheld status collection terminal and a data collection and analysis system. The handheld status collection terminal measures the corresponding electrical quantity of the relay protection device in the substation, thereby obtaining the operation status of the relay protection device and transmitting the status data to the data collection and analysis system. The data collection and analysis system performs analysis and calculation and then reports to the equipment status reporting system of the superior department. The present invention is reasonably designed, and the functions of data collection, input, intelligent calculation, automatic reporting of evaluation results, etc. of the state of the relay protection device are completed through the handheld status collection terminal, and the data are automatically reported to the superior department. There is no need for manual processing steps such as secondary transcription of data entered by hand to the computer, which avoids various disadvantages caused by manual calculation and has the characteristics of accuracy, speed, efficiency, reliability, etc.

[0004] However, the above analysis system still has certain shortcomings in its actual operation. During the operation of the system, since information cannot be collected and counted, managers may lack an accurate understanding of the specific conditions of equipment operation. When a fault occurs, they may not be able to take effective countermeasures in time, which may cause the fault in the power system to continue to expand and may delay the optimal repair time, causing economic losses. Summary of the invention

[0005] In order to solve the above problems and technical defects, the embodiment of the present application adopts the following technical solution for a state control system for safe operation of relay protection, including:

[0006] Main station module, application service module, substation module, communication module, intelligent terminal, data acquisition module and operation management module;

[0007] The master station module is bidirectionally connected to the application service module, and the application service module is bidirectionally connected to the substation module;

[0008] The intelligent terminal is bidirectionally connected to the data acquisition module, and the data acquisition module is bidirectionally connected to the operation management module;

[0009] The output end of the substation module is connected to the input end of the intelligent terminal;

[0010] The communication module is used to connect the main station module and the substation module. The substation module and the relay protection device inside the substation can ensure good communication function. When the substation module and the relay protection device communicate, no communication delay or communication line interruption will occur. The substation module can also upload various types of information specified in the substation module to the main station module at the fastest speed according to the requirements of the main station module. The substation module can be monitored through the main station module.

[0011] Preferably, the data acquisition module includes an equipment operation status information acquisition module, an analysis module and a storage module. The equipment operation status information acquisition module is used to collect the operation status information of the relay protection device, and transmit the information collected by the acquisition module to the analysis module via wireless transmission for processing and analysis. The analysis module processes and analyzes the operation information of the relay protection in different time periods and different states, and saves the processed operation information to the storage module.

[0012] Furthermore, the data acquisition module also includes an alarm module. During the operation of the relay protection device, the alarm module can send alarm signals of different forms to the intelligent terminal according to different alarm information types.

[0013] Preferably, the analysis module includes a graphics processing module, a signal processing module and an identification module. When the equipment operation status information acquisition module is running, the graphics processing module analyzes the primary system main wiring diagram and the secondary system distribution diagram in the substation to obtain changes in the operation status of the primary equipment and secondary equipment in the substation and changes in the primary system main wiring diagram and the secondary system distribution diagram of the substation.

[0014] Furthermore, when analyzing and processing the received signal, the signal processing module uses a digital signal processing algorithm to perform calculation analysis, and the formula is as follows:

[0015]

[0016] Preferably, the graphics processing module uses Fourier transform method during analysis and processing, and the formula is as follows:

[0017]

[0018] f is the spatial frequency, N is the variable frequency, n is the focal length, and j is the wavelength.

[0019] Preferably, the equipment operation status information acquisition module includes a resistance acquisition module, a current acquisition module, a voltage acquisition module, and a temperature acquisition module.

[0020] Furthermore, the operation management module is used to check the operation status of the relay protection equipment, and use the operation status of the substation primary system main connection diagram and the secondary system distribution diagram to obtain the substation protection information involved in the power system, determine the type of fault recorder, and obtain the basic parameters of the fault recorder.

[0021] Furthermore, the storage module adopts a linked storage method.

[0022] Furthermore, the identification module is used to identify the type of the transmission signal.

[0023] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0024] (1) The present application can provide reliable guarantee for the safe operation of the power grid by utilizing the relay protection information collection system, reduce the occurrence rate of faults, thereby relatively reducing the operating cost and improving the economic benefits. In the daily operation of the power system, the relay protection device plays an important role in protecting the safety of the system. Through the relay protection device, the possible faults and problems in the power system can be checked in time, and the abnormal operation status can be discovered in time, and timely correction and adjustment can be made, thereby ensuring the normal operation of the power system;

[0025] (2) The present application also adopts a relay protection information collection system to effectively control the expansion of the fault scope, and at the same time can improve the predictability of system fault detection and do a good job of prevention and control in advance. The use of this information collection system allows system managers to understand the operating conditions of various relay protection devices anytime and anywhere, so as to promptly discover various abnormal operating conditions, eliminate dangerous factors in a timely manner, ensure the safe operation of the power system, and reduce economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the attached picture:

[0027] Figure 1 A schematic diagram of the system structure of an embodiment of the present application;

[0028] Figure 2 Schematic diagram of the structure of the data acquisition module in the embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Example

[0031] like Figure 1 , Figure 2 As shown, the state control system for safe operation of relay protection includes:

[0032] Main station module, application service module, substation module, communication module, intelligent terminal, data acquisition module and operation management module;

[0033] The main station module and the application service module are bidirectionally connected, and the application service module and the substation module are bidirectionally connected;

[0034] The intelligent terminal and the data acquisition module are bidirectionally connected, and the data acquisition module and the operation management module are bidirectionally connected;

[0035] The output end of the substation module is connected to the input end of the intelligent terminal;

[0036] The communication module is used to connect the master station module and the substation module. The substation module and the relay protection device inside the substation can ensure good communication function. When the substation module and the relay protection device communicate, there will be no communication delay or communication line interruption. The substation module can also upload various types of information specified in the substation module to the master station module at the fastest speed according to the requirements of the master station module. The substation module can be monitored through the master station module.

[0037] The communication module consists of a hardware part and a software part. The hardware part includes the communication network and node equipment, and the software part includes the communication protocol and application software.

[0038] It should be noted that the communication protocol is used to specify the transmission, format, identification and key value of data frames, and can also define the management, control and data exchange of nodes during the communication process.

[0039] It should also be noted that the communication protocol includes a physical protocol, a data link layer protocol, a network layer protocol and a transport layer protocol; the communication module data transmission mode is any one of broadcast transmission and unidirectional and bidirectional transmission.

[0040] The data acquisition module includes an equipment operation status information acquisition module, an analysis module and a storage module. The equipment operation status information acquisition module is used to collect the operation status information of the relay protection device, and transmit the information collected by the acquisition module to the analysis module via wireless for processing and analysis. The analysis module processes and analyzes the operation information of the relay protection in different time periods and different states, and saves the processed operation information to the storage module.

[0041] The data acquisition module also includes an alarm module. During the operation of the relay protection device, the alarm module can send different forms of alarm signals to the intelligent terminal according to different alarm information types to remind relevant departments to prepare for fault handling.

[0042] The analysis module includes a graphics processing module, a signal processing module and an identification module. When the equipment operation status information acquisition module is running, the graphics processing module analyzes the primary system main wiring diagram and the secondary system distribution diagram in the substation to obtain changes in the operation status of the primary and secondary equipment in the substation and changes in the primary system main wiring diagram and the secondary system distribution diagram of the substation.

[0043] When analyzing and processing the received signal, the signal processing module uses a digital signal processing algorithm to perform calculation analysis. The formula is as follows:

[0044]

[0045] The graphics processing module uses the Fourier transform method when analyzing and processing. The formula is as follows:

[0046]

[0047] f is the spatial frequency, N is the variable frequency, n is the focal length, and j is the wavelength.

[0048] The equipment operation status information acquisition module includes a resistance acquisition module, a current acquisition module, a voltage acquisition module, and a temperature acquisition module.

[0049] The operation management module is used to check the operation status of the relay protection equipment, and use the operation status of the substation primary system main wiring diagram and the secondary system distribution diagram to obtain the substation protection information involved in the power system, determine the type of fault recorder, and obtain the basic parameters of the fault recorder.

[0050] The storage module adopts linked storage mode.

[0051] The identification module is used to identify the type of the transmission signal.

[0052] By using the relay protection information collection system, we can provide reliable guarantee for the safe operation of the power grid and reduce the occurrence rate of faults, which relatively reduces the operating cost and improves the economic benefits. In the daily operation of the power system, the relay protection device plays an important role in protecting the safety of the system. Through the relay protection device, we can timely check the possible faults and problems in the power system, and can also timely discover the abnormal operation status, make timely corrections and adjustments, so as to ensure the normal operation of the power system;

[0053] At the same time, the use of relay protection information collection system can effectively control the expansion of fault scope, improve the predictability of system fault detection, and do a good job of prevention and control in advance. The use of this information collection system allows system managers to understand the operation of various relay protection devices anytime and anywhere, so as to promptly discover various abnormal operating conditions, eliminate dangerous factors in time, ensure the safe operation of the power system, and reduce economic losses.

[0054] The above-mentioned embodiments only express the preferred implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A state control system for safe operation of relay protection, characterized in that: include: Main station module, application service module, substation module, communication module, intelligent terminal, data acquisition module and operation management module; The master station module is bidirectionally connected to the application service module, and the application service module is bidirectionally connected to the substation module; The intelligent terminal is bidirectionally connected to the data acquisition module, and the data acquisition module is bidirectionally connected to the operation management module; The output end of the substation module is connected to the input end of the intelligent terminal.

2. The state control system for safe operation of relay protection according to claim 1, characterized in that: The data acquisition module includes an equipment operation status information acquisition module, an analysis module and a storage module. The equipment operation status information acquisition module is used to collect the operation status information of the relay protection device, and transmit the information collected by the acquisition module to the analysis module via wireless for processing and analysis. The analysis module processes and analyzes the operation information of the relay protection in different time periods and different states, and saves the processed operation information to the storage module.

3. The state control system for safe operation of relay protection according to claim 2, characterized in that: The data acquisition module also includes an alarm module. During the operation of the relay protection device, the alarm module can send alarm signals of different forms to the intelligent terminal according to different alarm information types.

4. The state control system for safe operation of relay protection according to claim 2, characterized in that: The analysis module includes a graphics processing module, a signal processing module and an identification module. When the equipment operation status information acquisition module is running, the graphics processing module analyzes the primary system main wiring diagram and the secondary system distribution diagram in the substation to obtain changes in the operation status of the primary equipment and secondary equipment in the substation and changes in the primary system main wiring diagram and the secondary system distribution diagram of the substation.

5. The state control system for safe operation of relay protection according to claim 4, characterized in that: The signal processing module uses a digital signal processing algorithm to perform calculation analysis, and the formula is as follows:

6. The state control system for safe operation of relay protection according to claim 4, characterized in that: The graphics processing module adopts the Fourier transform method, and the formula is as follows: f is the spatial frequency, N is the variable frequency, n is the focal length, and j is the wavelength.

7. The state control system for safe operation of relay protection according to claim 2, characterized in that: The equipment operation status information acquisition module includes a resistance acquisition module, a current acquisition module, a voltage acquisition module, and a temperature acquisition module.

8. The state control system for safe operation of relay protection according to claim 4, characterized in that: The operation management module is used to check the operation status of the relay protection equipment, and use the operation status of the substation primary system main connection diagram and the secondary system distribution diagram to obtain the substation protection information involved in the power system, determine the type of fault recorder, and obtain the basic parameters of the fault recorder.

9. The state control system for safe operation of relay protection according to claim 2, characterized in that: The storage module adopts a link storage method.

10. The state control system for safe operation of relay protection according to claim 4, characterized in that: The identification module is used to identify the type of the transmission signal.

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