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DC storage battery monitoring device

A monitoring device and storage battery technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve problems such as fault leapfrogging, total station protection, and loss of DC power supply for control circuits, so as to ensure safe and reliable operation.

Active Publication Date: 2019-01-04
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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Examples

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Embodiment Construction

[0011] A DC battery monitoring device, comprising a voltage connection port, a voltage acquisition module, a processor, a button module, a display module, a communication module, a clock module, a power module and an alarm module (such as image 3 shown); the voltage wiring port is two groups, and its input end is used for collecting the voltage from DC storage battery and DC bus bar system respectively; Voltage wiring port is connected with voltage acquisition module; The signal output end of voltage acquisition module is connected with processor The signal input terminal is connected; the key module, display module, communication module, clock module, power module and alarm module are all connected to the processor; the processor includes a pressure difference calculation unit, a balance bridge current test unit and an alarm circuit; the voltage difference operation unit includes an inverting amplifier, the voltage signal of the DC bus system is input to the inverting input o...

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Abstract

The invention relates to the field of substation DC system primary circuit and substation measurement and control devices and specifically relates to a DC storage battery monitoring device. A technical problem that an existing DC system lacks a device capable of effectively monitoring whether a DC storage battery is online is solved. The DC storage battery monitoring device comprises two groups ofvoltage wiring ports, a voltage collecting module, a processor, a button module, a display module, a communication module, a clock module, a power supply module and an alarm module. An input end of each group of voltage wiring ports is used for collecting voltages from the DC storage battery and a DC bus system. The voltage wiring ports are connected to the voltage collecting module. A signal output end of the voltage collecting module is connected to a signal input end of the processor. The button module, the display module, the communication module, the clock module, the power supply moduleand the alarm module are connected to the processor, and the processor comprises a voltage difference computing unit, a balanced bridge current testing unit and an alarm circuit.

Description

technical field [0001] The invention relates to the primary circuit of a substation DC system and the field of substation measurement and control devices. In particular, the invention relates to wiring of a DC system of a substation, in particular to a DC storage battery monitoring device. 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 Provincial 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...

Claims

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Application Information

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IPC IPC(8): G01R31/36G01R31/02
CPCG01R31/50
Inventor 刘云飞韩昱史新华张毓李慧伟贾峰董瑾白俊峰闫效康郝俊卿赵星仓贾珍
Owner XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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