A kind of protection device and method for fault collection terminal detection
A fault collection and protection device technology, applied in circuit devices, AC network circuits, electrical components, etc., can solve problems such as easily damaged test devices, unclear reasons for faulty terminal failures, losses, etc., to reduce the probability of errors or even damage, The effect of improving safety and operational efficiency
Active Publication Date: 2018-01-19
国网山东省电力公司营销服务中心(计量中心) +2
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Problems solved by technology
[0002] Due to the variety of terminal equipment faults and the different fault phenomena, it is difficult to directly see the cause of the fault from the surface. Various terminal function fault detection equipment has also been developed in the laboratory, but the cause of the fault terminal is not clear. , rashly put the faulty terminal on the test bench for testing, it is very easy to damage the test device, and even cause immeasurable losses
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[0022] The present invention is described in detail below in conjunction with accompanying drawing:
[0023] Such as figure 1 As shown, a protection device for fault acquisition terminal detection, the protection device is mainly composed of isolation transformer, power switching module, control module, voltage short circuit protection sampling module, current open circuit protection sampling module and so on.
[0024] The isolation transformer is composed of three-way 1:1 isolation transformers, adding a first-level buffer, which can effectively avoid tripping and damage of the three-phase four-wire input power supply caused by the short circuit of the fault terminal voltage of the subsequent stage.
[0025] The current is output from the current source to the positive current terminal I+ of the fault terminal, and returns to the current source through the negative current terminal I- of the fault terminal.
[0026] Such as figure 2 As shown, the three-phase standard sourc...
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The invention discloses a protection device and method for fault acquisition terminal detection, including an isolation transformer, a power switching module, a control module, a voltage short-circuit protection sampling module, and a current open circuit protection sampling module. The power switching module is connected to a power supply through an isolation transformer. At the same time, the power switching module is directly connected to the power supply, and the power switching module is also connected to the three-phase current, and the control module is respectively connected to the control module, the voltage short circuit protection sampling module and the current open circuit protection sampling module; the protection device of the present invention can be effectively compatible Various types of acquisition terminals solve the problem of damage to the entire detection device system due to faulty terminals, reduce the probability of error or even damage to the terminal test device, and improve the safety and operating efficiency of faulty collection terminal detection.
Description
technical field [0001] The invention relates to the field of detection of electricity information collection equipment, in particular to a protection device and method for detection of fault collection terminals. Background technique [0002] Due to the variety of terminal equipment faults and the different fault phenomena, it is difficult to directly see the cause of the fault from the surface. Various terminal function fault detection equipment has also been developed in the laboratory, but the cause of the fault terminal is not clear. If the faulty terminal is placed on the test bench for testing, it is easy to damage the test device and even cause immeasurable losses. Now there is an urgent need for a protection device for fault collection terminal detection, which can automatically adapt to various types of terminals, has an automatic protection terminal test device and does not affect the test results of the terminal. The probability of error or even damage of the ter...
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IPC IPC(8): H02J3/00
Inventor 李琮琮杜艳于超王平欣刘潇
Owner 国网山东省电力公司营销服务中心(计量中心)