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A Method for Testing Electromagnetic Disturbance of DC Power Distribution Transformation System

A test method and electromagnetic disturbance technology, applied in the field of power system, to achieve accurate measurement results, avoid damage, and intuitive electromagnetic disturbance characteristics

Active Publication Date: 2021-01-05
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with the AC power distribution system, in addition to impact, operation, and lightning overvoltage in the DC power distribution system, problems such as busbar faults, DC blocking, overshoot at start and stop, etc. in the DC power distribution system will also cause overvoltage.

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  • A Method for Testing Electromagnetic Disturbance of DC Power Distribution Transformation System
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  • A Method for Testing Electromagnetic Disturbance of DC Power Distribution Transformation System

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Embodiment Construction

[0061] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0062] Such as figure 1 As shown, an electromagnetic disturbance test method for a DC power distribution conversion system is introduced in the embodiment of the present invention. First, a test condition is constructed based on the DC power distribution conversion system; then, based on one or more of the following test metho...

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Abstract

The invention discloses an electromagnetic disturbance test method for a direct-current power distribution transformation system. The method comprises the steps of: firstly constructing a test condition based on a direct-current power distribution transformation system; then, on the basis of one or more of the following test methods: a main loop voltage test method, an electric field test method,a magnetic field test method, an electromagnetic disturbance test method of a direct-current power supply and an electromagnetic disturbance test method of a CVT (Capacitor Voltage Transformers) secondary winding, testing the electromagnetic disturbance signal of the direct-current power distribution transformation system under the test working condition; and finally, based on the electromagneticdisturbance signal, analyzing and obtaining the electromagnetic disturbance characteristic of the direct-current power distribution transformation system. The test method is more accurate and comprehensive in measurement of the electromagnetic disturbance characteristics of the direct-current power distribution transformation system, and provides powerful guarantee for normal operation of the system.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to an electromagnetic disturbance testing method for a DC power distribution conversion system. Background technique [0002] The overvoltage generated on the key equipment in the DC power distribution conversion system is mainly caused by the electromagnetic transient process caused by the operation, failure and lightning strike of the AC and DC power distribution systems. However, compared with the AC power distribution system, in addition to impact, operation, and lightning overvoltage in the DC power distribution system, problems such as busbar faults, DC blocking, overshoot at start and stop, etc. in the DC power distribution system will also cause overvoltage. . Further, parameters such as waveform, amplitude and duration of transient overvoltage in DC power distribution system are affected by line composition, converter station equipment, damping circuit, sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/001
Inventor 余占清曾嵘屈鲁王晓蕊周文鹏聂子攀
Owner TSINGHUA UNIV