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DC system AC insulation breakdown measuring and recording alarm module

A DC system and AC channeling technology, which is applied in the direction of power supply testing, measuring electricity, measuring devices, etc., can solve problems such as endangering the safety of DC systems and maintenance personnel not being able to deal with them in time

Inactive Publication Date: 2018-05-18
佛山市校友桥网络科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the existing DC system insulation monitoring devices provides an effective solution to AC channeling faults, resulting in the failure of maintenance personnel to deal with AC channeling faults in the DC system in time, endangering the safety of the DC system

Method used

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  • DC system AC insulation breakdown measuring and recording alarm module

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Embodiment Construction

[0018] In order to allow those skilled in the art to understand the present invention more clearly and intuitively, the present invention will be further described below.

[0019] A DC system AC channeling measurement and alarm module, including a DC voltage division sampling module, an AC voltage division sampling module, a data storage module, a display setting module, an alarm output module, a communication module and a 32-bit processor; wherein,

[0020] DC voltage divider sampling module: Convert the positive pole-to-ground voltage and negative pole-to-ground voltage in the DC system from analog signals to digital signals and upload them to the processor;

[0021] AC voltage division sampling module: extract the AC voltage component in the DC system, convert the AC voltage from analog signal to digital signal after voltage division, and upload it to the processor;

[0022] 32-bit processor: coordinate and process all the work of the module;

[0023] Storage module: store...

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Abstract

The invention provides a DC system AC insulation breakdown measuring and recording alarm module, including a DC voltage-dividing sampling module, an AC voltage-dividing sampling module, a data storagemodule, a display setting module, an alarm output module, a communication module and a processor. The DC voltage-dividing sampling module converts the voltage-to-ground of a DC system from an analogsignal into a digital signal and uploads the digital signal to the processor. The AC voltage-dividing sampling module extracts an AC voltage component, divides the voltage of the AC voltage componentand then uploads the AC voltage to the processor. The processor coordinates all the work of the module. The storage module stores parameter setting and alarm historical data. The alarm module providesan alarm output in an acousto-optic mode and a passive output contact mode. The communication module uploads the monitor real-time data and the alarm historical data to a host computer system througha RS485 interface or a RS232 interface. The display setting module displays the monitored DC voltage, AC voltage, and alarm historical values, and sets an alarm threshold value.

Description

technical field [0001] The invention relates to a measuring and recording alarm module for alternating current channeling in a direct current system. Background technique [0002] The DC system grounding fault in the power system is a kind of fault that is prone to occur and is very harmful to the power system. Whether it is positive grounding or negative grounding, it may cause protection malfunction or protection refusal to operate, endangering the normal operation of the power system. [0003] "People's Republic of China Electric Power Industry Standard DL / T856-2004" stipulates the setting value of different DC system grounding faults. When the grounding impedance of the DC system is lower than the resistance value, it means that the system is already in a faulty operation state and needs to be dealt with in time. [0004] The AC channeling fault in the DC system is the most serious grounding situation in the DC system. When the AC channeling fault occurs in the DC syste...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/40G01R31/02
CPCG01R31/00G01R31/40G01R31/50
Inventor 许家峰
Owner 佛山市校友桥网络科技有限公司
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