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Online monitoring method for DC storage battery

A battery and DC bus technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of total station protection and control circuit loss of DC power supply, fault leapfrog, etc., to facilitate troubleshooting, improve reliability, and practical strong effect

Active Publication Date: 2018-12-07
XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the protection and control circuits of the whole station lost the DC power supply, and the monitoring system did not alarm, causing the fault to leapfrog

Method used

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  • Online monitoring method for DC storage battery
  • Online monitoring method for DC storage battery
  • Online monitoring method for DC storage battery

Examples

Experimental program
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Embodiment Construction

[0026] The online monitoring of the DC storage battery is adopted to complete the monitoring, and the structure of the device is as follows (such as image 3 , 4 ): including a voltage connection port, a voltage acquisition module, a processor, a button module, a display module, a communication module, a clock module, a power supply module and an alarm module; The voltage of the storage battery and the DC bus system; the voltage wiring port is connected with the voltage acquisition module; the signal output terminal of the voltage acquisition module is connected with the signal input terminal of the processor; the key module, display module, communication module, clock module, power supply The module and the alarm module are all connected to the processor; the processor includes a differential pressure calculation unit, a balance bridge current test unit and an alarm circuit; the differential pressure calculation unit includes an inverting amplifier, and the voltage signal of ...

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Abstract

The invention discloses an online monitoring device for a DC storage battery. The method is characterized in that firstly, the method is based on a DC storage battery electric energy amount monitoringmode of an existing system; secondly, a DC system monitoring alarm technical solution is utilized; and thirdly, according to a double-precision calculating mode which comprises a balance bridge current algorithm and a voltage difference algorithm, online analysis is performed for determining whether the DC storage battery is online and whether the DC storage battery reaches a threshold. The method of the invention has an important realistic meaning in determining whether the DC storage battery is online, ensuring an online and excellent state of the DC storage battery, and ensuring safe and stable operation of a power system.

Description

technical field [0001] The invention belongs to the field of electric power systems, and relates to the primary circuit of a substation DC system and the field of substation measurement and control devices. Especially related to substation DC system wiring. Background technique [0002] At present, the substation does not have a more comprehensive monitoring device for the secondary circuit of the voltage transformer. When the secondary circuit is abnormal or faulty, it cannot be detected and eliminated in time, thus affecting the normal operation of the relay protection device. In view of the main transformer burning accident of the 330 kV Nanjiao Substation (110 kV Weiqu Substation) of the State Grid Shaanxi Electric Power Company in Xi'an, Shaanxi, the 35 kV Wei In line III failure, Weiqu substation's 35 kV and 10 kV busbar voltages drop, #1, #2, #0 substations use substation low voltage side to trip, and the DC system loses AC power. The two sets of new batteries that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 韩昱刘云飞史新华张毓李慧伟贾峰董瑾白俊峰闫效康郝俊卿赵星仓
Owner XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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