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Monitor for monitoring introduction of AC into DC

A technology of AC crossing into DC and AC crossing in, which is applied in the field of DC power equipment monitoring equipment, can solve problems such as inaccurate monitoring, and achieve the effects of high measurement accuracy, fast data collection, and strong anti-interference ability

Pending Publication Date: 2017-12-08
国网四川省电力公司阿坝供电公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an AC intrusion into DC monitor, which solves the inaccurate monitoring of the existing AC intrusion into DC monitoring system, and realizes that the AC intrusion into DC monitor can accurately monitor the AC intrusion into DC. Technical effects of monitoring

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  • Monitor for monitoring introduction of AC into DC
  • Monitor for monitoring introduction of AC into DC
  • Monitor for monitoring introduction of AC into DC

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Embodiment Construction

[0047] The invention provides an AC intrusion into DC monitor, which solves the inaccurate monitoring of the existing AC intrusion into DC monitoring system, and realizes that the AC intrusion into DC monitor in this application can accurately monitor the AC intrusion into DC The technical effect of monitoring.

[0048] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0049] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope of t...

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Abstract

The invention discloses a monitor for monitoring the introduction of AC into DC. The monitor includes: a data acquisition unit for acquiring an AC signal, a DC signal and a ripple signal on a DC bus; a photolectric isolation unit for separating the high voltage from low voltage; a CPU used for calculating the acquired signal, analyzing and calculating the voltage value of introduction of AC into DC, comparing the voltage value of introduction of AC into DC with a set AC introduction alarm threshold value, and determining whether to give an alarm based on a comparison result; an alarm output unit for achieving an AC introduction alarm function based on the determined result of the CPU. The monitor solves the inaccurate monitoring of a conventional system for monitoring the introduction of AC into DC, and can accurately monitor the introduction of AC into DC.

Description

technical field [0001] The invention relates to the field of DC power equipment monitoring equipment, in particular to an AC intrusion DC monitor. Background technique [0002] DC power system plays an important role in converter stations and substations. It can provide reliable and uninterrupted device power and control power for important equipment in the station, such as relay protection devices, communication equipment, automatic monitoring systems, circuit breakers, etc. switch, switch control power supply, DC lighting, etc. The DC system is the key to ensure the safe and stable operation of the power system. [0003] In the DC system, the AC intrusion into the AC is the most harmful, causing the metal grounding of the DC system, and the insulation monitoring device works abnormally; causing the monitoring device of the plant station system to send a large number of alarm information by mistake, and frequently refreshing; causing the relay protection device to protect ...

Claims

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Application Information

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IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 刘勇罗亮黄永浩谢东陈阳赵梓宏赵兰兰郑智仁潘登陈行辉刘世浩张恩高龙喜张成伟冯超陈蜀亮张先胜
Owner 国网四川省电力公司阿坝供电公司