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Detection device and method for three-phase current unbalance adjustment device

A three-phase current and balance adjustment technology, which is applied in the field of distribution network, can solve the problems of low detection efficiency and high detection efficiency, and achieve the effects of reducing load power, saving time for screwing and unloading screws, and easy verification

Pending Publication Date: 2018-06-12
JIANGSU NARI TURBOSTAR ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the limitations of detection means and low detection efficiency in the prior art, the present invention provides a detection device and method for a three-phase current unbalance adjustment device. The detection device includes an incoming line, a first air circuit breaker, a current Transformer, busbar, independent load module and regulating load module, the detection method is based on the three-phase current unbalance degree of the three-phase current unbalance regulating device in the initial state, and the independent load module is adjusted to realize multiple Batch detection of commutation switches, high detection efficiency

Method used

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  • Detection device and method for three-phase current unbalance adjustment device
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  • Detection device and method for three-phase current unbalance adjustment device

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Embodiment 1

[0038] Embodiment 1 of the present invention provides a detection device for a three-phase current unbalance regulating device, wherein the three-phase current unbalance regulating device includes a controller and M commutation switches controlled by the controller ( figure 1 KD1 to KDM in the middle); The structure diagram of the detection device of the three-phase current unbalance adjustment device provided by the embodiment of the present invention is as follows figure 1 as shown, figure 1Among them, KK1 represents the first air circuit breaker, KK2 represents the second air circuit breaker in the independent load module, K1A, K1B and K1C are the three-phase relays of the first relay unit in the independent load module respectively, K2A, K2B and K2C are respectively It is the three-phase relay of the second relay unit in the independent load module, and so on; K1 to KM are the M air circuit breakers in the regulating load module, R represents the load, and CT1 represents t...

Embodiment 2

[0059] The structural diagram of the detection device of the three-phase current unbalance adjustment device provided by Embodiment 2 of the present invention is as follows Figure 4 As shown, there are 9 commutation switches in the three-phase current unbalance adjustment device ( Figure 4 There are 5 load groups and 5 relay units in the independent load module, and 9 air circuit breakers in the regulating load module ( Figure 4 K1 to K9) and 9 load units; KK1 represents the first air circuit breaker, KK2 represents the second air circuit breaker in the independent load module, K1A, K1B and K1C are the first relay unit in the independent load module respectively Three-phase relays, K2A, K2B and K2C are respectively the three-phase relays of the second relay unit in the independent load module, and so on, K5A, K5B and K5C are respectively the three-phase relays of the fifth relay unit in the independent load module; R means the load. In consideration of energy saving and co...

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Abstract

The invention provides a detection device and method for a three-phase current unbalance adjustment device. The detection device comprises an incoming line, a first air breaker, a current transformer,a busbar, an independent load module and a load adjusting module; the first air breaker is arranged on the incoming line and connected with the busbar through the current transformer, and the independent load module and the load adjusting module are connected with the busbar separately. Two load topologies of the independent load module and the load adjusting module are adopted, the load adjusting module is not adjustable, the independent load module can be adjusted only through a button for rapid inspection, multiple phase change switches in the three-phase current unbalance adjustment device can be detected at the same time, and the detection efficiency is high. The three-phase unbalance complex working conditions of a power distribution network zone area are simulated, the load power of the simulated power distribution network zone area is lowered, the detected current magnitude is enlarged through software, and the adjusting capability of the three-phase current unbalance adjustment device is easily verified.

Description

technical field [0001] The invention relates to the technical field of distribution networks, in particular to a detection device and method for a three-phase current unbalance adjustment device. Background technique [0002] In recent years, the requirements of the power grid system on the distribution network have been increasing year by year, especially in the distribution network area with a voltage level of 380V in the distribution network. It is easy to have three-phase unbalanced power quality problems, and the degree of unbalance seriously exceeds the standard. The three-phase unbalance problem is an important condition for the long-term stable operation of the distribution station area, and it is also a prerequisite for the stable operation of the transformer. The reason for the unbalanced three-phase problem is the unbalanced current of the transformer in the distribution network station area. The current three-phase current unbalance adjustment device includes t...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01R29/16
CPCG01R31/327G01R29/16
Inventor 戴永正顾宇峰贲宝强
Owner JIANGSU NARI TURBOSTAR ELECTRIC
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