Personal safety simulation test method and personal safety simulation test device

A technology of personal safety and test method, which is applied in the field of distribution network test, can solve problems such as lack of equivalence, and achieve the effect of good equivalence, easy realization and easy operation

Active Publication Date: 2017-11-07
李景禄
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Problems solved by technology

In order to verify the impact of various grounding methods and grounding fault handling devices on personal safety, animal testing is mainly used at present, that is, contacting animals with the power grid for single-phase grounding tests. The body resistance and stride distance are quite different from the human body, and the test is not equivalent. Therefore, a personal safety simulation test method is found to simulate personal safety when a person is shocked or a single-phase power grid is disconnected and grounded. It is very necessary to find a suitable distribution network neutral point grounding method and distribution network single-phase ground fault processing device through experiments

Method used

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  • Personal safety simulation test method and personal safety simulation test device

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Embodiment Construction

[0011] The personal safety simulation test device consists of contactors JZ1, JZ2, JZ3, switches K1, K2, K3, K4, K5, adjustable resistors R1, R2, R3, current sensors TA1, TA2, TA3, voltage sensors Tv1, TV2 and The computer measurement and control system consists of adjustable resistor R1 to simulate the resistance of the upper body of the human body; adjustable resistors R2 and R3 to simulate the resistance of the two legs of the human body, and its resistance value can consider different shoe resistance and contact resistance with the ground. Contactor JZ1 is a connector directly connected to the power grid. Contactors JZ2 and JZ3 simulate the contact between human feet and the ground. They can be made of metal with the same shape as human feet. They are placed on the ground to simulate the contact between human feet and the ground. condition. There is a timing device inside the computer measurement and control system, which is used to record the waveform and duration of volt...

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Abstract

The invention discloses a personal safety simulation test method. Adjustable resistors, switches, current sensors, voltage sensors and a computer control system are adopted to form the personal safety simulation test device according to the method. After the simulation test device is accessed to a power grid, single-phase grounding tests are performed using different power distribution network neutral point grounding mode and grounding fault processing devices. Tests of step voltage near a grounding fault point are carried out using the different power distribution network neutral point grounding mode and grounding fault processing devices when single-phase broken-line grounding occurs. Current values, voltage values, current duration time and voltage duration time are acquired in the tests, influences of the different power distribution network neutral point grounding mode and grounding fault processing devices on personal safety are assessed, and a proper power distribution network neutral point grounding mode and power distribution network single-phase grounding fault processing device is found out through the tests.

Description

technical field [0001] The invention belongs to the field of distribution network testing, and is mainly used for the safety impact test of different distribution network neutral point grounding modes and grounding fault processing devices on personal single-phase electric shock grounding. Background technique [0002] The neutral point grounding method of power system is a comprehensive technical subject involving many aspects of the power system. It is directly related to the reliability of power supply, the function of relay protection devices and the impact on personal safety. At present, the distribution network mainly adopts the neutral point non-grounding method, the neutral point grounding method through the arc suppression coil and the neutral point grounding method through the resistance grounding method. With the development of the distribution network, the capacitive current increases, especially the overhead insulation There are a large number of applications of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 李政洋李景禄
Owner 李景禄
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