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Self-adaptive protection method and device

A protection device and self-adaptive technology, which is applied in the fields of electric power protection and electric fire protection, and can solve the problems that the self-adaptive protection cannot be triggered to cut off the circuit, the current changes are small, and the threshold cannot be reached.

Pending Publication Date: 2021-06-04
天津市中力神盾电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in reality, many places such as hospitals, schools and shopping malls have a single electrical equipment, and the abnormal current in the electrical equipment can also cause electrical fires. However, the current change of the abnormal current in the distribution line is very small, reaching If it is less than the set threshold, the adaptive protection cut-off circuit cannot be triggered

Method used

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Embodiment 1

[0028] figure 1 It is a flow chart of the adaptive protection method provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the adaptive protection method provided by Embodiment 1 of the present invention is used to protect power distribution lines in a fixed area in a power distribution system, and the method includes:

[0029] Step 101, monitoring one or more state data of distribution lines in a fixed area in the distribution system;

[0030] Step 102, setting a learning period, converting one or more status data of the distribution line within the learning period into one or more status data waveforms, and configuring them in the adaptive protection mode of the distribution line;

[0031] Step 103, after the learning period is over, compare the monitored state data with the waveform diagram of the status data, and if it exceeds the range of the waveform diagram, it is judged that the power distribution line is abnormal;

[0032] Step 104, enabling...

Embodiment 2

[0044] figure 2 It is a schematic structural diagram of the adaptive protection device provided by Embodiment 2 of the present invention. Such as figure 2 As shown, the adaptive protection device provided by Embodiment 2 of the present invention is suitable for protecting power distribution lines in a fixed area in a power distribution system, and includes a protection interface module 100 and a protection output module 200 .

[0045] The protection interface module 100 includes a monitoring unit 101 , a preset unit 102 and a configuration unit 103 .

[0046] Further, the monitoring unit 101 is configured to monitor one or more state data of the main distribution line in a fixed area in the power distribution system.

[0047] Further, the preset unit 102 is configured to set a learning cycle of one or more state data at the distribution line.

[0048] Further, the configuration unit 103 is configured to convert one or more state data of the distribution line within a cert...

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Abstract

The invention provides a self-adaptive protection method and device. The method comprises the following steps: monitoring one or more pieces of state data of a total distribution line in a fixed area in a power distribution system; setting a learning period, converting one or more pieces of state data of the distribution line in the learning period into one or more state data oscillogram, and configuring the state data oscillogram into a self-adaptive protection mode of the distribution line; after the learning cycle is ended, comparing the monitored state data with the state data oscillogram, and if the monitored state data exceeds the range of the oscillogram, judging that the distribution line is abnormal; starting the distribution line self-adaptive protection mode, controlling the distribution line to be disconnected, and realizing self-adaptive protection of the distribution line. According to the invention, the distribution line is always in an optimal protection state, and the safety and reliability of the distribution system are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of electric power protection and the field of electric fire protection, and in particular relates to an adaptive protection method and device. Background technique [0002] The adaptive protection in the existing power distribution system is to continuously learn the peak value of the current in the distribution line, set this peak value as a threshold, and judge whether the real-time current exceeds the peak value. If it exceeds, it will be considered that the distribution line is abnormal, and the adaptive protection will be turned on to cut off circuit, to protect electrical equipment and personal safety. [0003] However, in reality, many places such as hospitals, schools and shopping malls have a single electrical equipment, and the abnormal current in the electrical equipment can also cause electrical fires. However, the abnormal current in the distribution line changes very little, reaching If it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H3/08H02H3/32H02H3/00
CPCH02H3/006H02H3/08H02H3/32H02H7/26
Inventor 孙巍巍
Owner 天津市中力神盾电子科技有限公司