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A low-voltage switch cabinet feeder monitoring and measuring device

A low-voltage switch, measuring device technology, applied in the direction of measuring devices, measuring electricity, circuit devices, etc., can solve the problems of inconvenient on-site wiring and operation and maintenance, inability to monitor the bus voltage, etc., to improve the level of automation, reduce control cables, feeder monitoring concise effect

Active Publication Date: 2018-07-17
广东正诚电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution requires multiple types of modules and cannot monitor the bus voltage. If it is necessary to meet the requirements of the IEC61850 communication standard for digital substations, it is necessary to add multiple communication devices to meet the requirements, which will cause inconvenience to field wiring and operation and maintenance.

Method used

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  • A low-voltage switch cabinet feeder monitoring and measuring device
  • A low-voltage switch cabinet feeder monitoring and measuring device
  • A low-voltage switch cabinet feeder monitoring and measuring device

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Embodiment Construction

[0051] In order to enable the examiners to further understand the purpose, features and functions of the present invention, the present invention will be further described below in conjunction with the accompanying drawings:

[0052] see figure 1 - 8 is a schematic diagram of the present invention, which relates to a low-voltage switchgear feeder monitoring and measuring device.

[0053] Such as figure 1 As shown, the present invention mainly controls the feeder line of the low-voltage switchgear. Generally, 16 loops are used as a unit, and 8 loops can also be designed as a unit. Each feeder circuit breaker needs to have OF circuit breaker auxiliary contact and SD circuit breaker tripping auxiliary contact; each feeder circuit should install a Hall current sensor in phase B (or other phase sequence); if the circuit breaker needs to be operated, It is necessary to add MX opening release to the circuit breaker.

[0054] figure 2 It is the CPU schematic diagram of the presen...

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Abstract

The invention relates to the field of alternating-current power source monitoring and measuring, and especially relates to a low-voltage switchgear feeder monitoring and measuring device. The device has functions like feeder switching status, feeder alarm tripping status, feeder current measurement, bus voltage measurement, feeder control output and communication. The device is installed on a low-voltage switchgear feeder screen to achieve a four-remote control function, and can be conveniently connected to an integrated automation system. The low-voltage switchgear feeder monitoring and measuring device adopts an M430F2491 embedded microcontroller controller as a core processor to monitor feeder switching status, feeder alarm tripping status, feeder current measurement, bus voltage measurement, feeder control output, communication and the like; the device integrates the functions of multiple pieces of original feeder measuring and monitoring equipment, and therefore, low-voltage switchgear feeder monitoring is more concise, and the level of automation is improved; and the device is integrated with the function of communication, so that operators can easily monitor the power and status of a low-voltage switchgear feeder and remotely control the tripping of a feeder branch.

Description

technical field [0001] The invention relates to the field of AC power monitoring and measurement, in particular to a low-voltage switch cabinet feeder monitoring and measuring device. Background technique [0002] For a long time, among the professional users of power plants, nuclear power or other industrial and mining enterprises, the existing technical solutions are: [0003] 1. Only intelligent equipment is used to monitor the incoming lines or important low-voltage feeder circuits. For the less important feeder circuits, especially the feeder circuits using molded case circuit breakers, due to the large number, they are basically rarely monitored, or due to Too much monitoring equipment is required, and the cost increases significantly, so the monitoring is abandoned; [0004] 2. According to the above scheme, if monitoring is required, it is necessary to connect hard contacts to the background monitoring device, or the hard contact output of the background monitoring ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00G01R31/00
CPCY02B90/20Y04S20/00
Inventor 陈益栓余伙庆纪小勇林丹渠佘纲歆
Owner 广东正诚电气科技有限公司
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