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System and method for maintaining condition of relay protection

A relay protection and state-of-the-art maintenance technology, applied in the direction of measuring electricity, electrical components, circuit devices, etc., can solve the problems of high inspection costs, reduced equipment utilization, and long running time of equipment power outages, etc.

Inactive Publication Date: 2013-05-22
XJ ELECTRIC +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the power system fails during this period, the protection will not be able to operate correctly, and this deficiency will increasingly restrict the improvement of the stability and reliability of the secondary equipment
[0003] In addition, the number of substations and transmission lines is increasing, and the number of protection / control devices is increasing sharply. The inspection workload is heavy, a single inspection takes a long time, and the equipment runs for a long time in a power outage, which reduces the utilization of equipment and puts forward labor requirements. strict requirements
Some substations are located in remote mountainous areas with high mountains and long roads, and the inspection cost remains high under the traditional regular inspection method

Method used

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  • System and method for maintaining condition of relay protection
  • System and method for maintaining condition of relay protection

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Embodiment Construction

[0025] Microcomputer relay protection itself has a strong self-inspection capability. Online self-inspection of CPU, RAM, FLASH, and communication circuits can be realized. The maintenance of analog acquisition circuits, digital input circuits, digital output circuits and tripping circuits is a must. The focus of regular inspection of secondary equipment. The invention mainly solves the state maintenance of the analog acquisition circuit, the switch value input circuit, the switch value output and the trip circuit.

[0026] Such as figure 1 As shown, it is a schematic diagram of a state-based maintenance system for relay protection according to an embodiment of the present invention. This system includes:

[0027] Relay protection, measurement and control device, used to sample the three-phase current for protection, the three-phase current for measurement, and the bus voltage, and send them to the relay protection monitoring server through the station control layer network;...

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Abstract

The invention relates to a system and method for maintaining the condition of relay protection, belonging to the technical field of condition maintenance of relay protection of power systems. The system comprises a relay protection, measurement and control device, a real time data recording system, a relay protection monitoring server and a remote condition monitoring center, wherein the relay protection, measurement and control device is connected into a station level network via a cable; the relay protection monitoring server receives data sent by the relay protection, measurement and control device via the station level network; the real time data recording system is connected with the relay protection monitoring server via a cable; and the relay protection monitoring server is in communication connection with the remote condition monitoring center via a network. The system and the method have the beneficial effects of effectively reducing the items which are periodically maintained manually, even dispensing with manual inspection, reducing the power outage time due to maintenance of equipment and improving the reliability and the working efficiency.

Description

technical field [0001] The invention relates to a relay protection state maintenance system and a maintenance method, and belongs to the technical field of power system relay protection state maintenance. Background technique [0002] With the rapid development of the national economy and the scale of the power grid, the safe operation of the power grid has higher and higher requirements for the safety and stability of the secondary protection / control system of the substation. According to the requirements of "Relay Protection and Power Grid Safety Automatic Device Inspection Regulations", the relay protection, safety automatic device and secondary circuit wiring need to be inspected regularly to ensure that the device components are in good condition and function normally, and that the circuit wiring and setting are correct. If the protective device breaks down between two calibrations, it can only be discovered when the protective device fails or the next calibration is pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00G01R31/00G01R31/327
Inventor 包伟刘跃新牛元立杨红旗李晓朋熊浩清苗新军张春峰顾峰
Owner XJ ELECTRIC
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