Method and device for governing three-phase imbalance of transformer area, equipment and medium

A three-phase, balanced technology, applied in the direction of circuit devices, multi-phase network asymmetry reduction, multi-phase network elimination/reduction of asymmetry, etc., can solve the problem that the load adjustment cannot be ideal, consumes a lot of manpower and time, etc.

Active Publication Date: 2021-09-28
ZHANJIANG POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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Problems solved by technology

[0003] The first type of method requires that the load can be adjusted, and the adjustment of the load cannot achieve an ideal average combination. It needs to be adjusted according to the degree of imbalance, which requires a lot of manpower and time to complete; the second type is load compensation. The problem is cost and capacity

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  • Method and device for governing three-phase imbalance of transformer area, equipment and medium
  • Method and device for governing three-phase imbalance of transformer area, equipment and medium
  • Method and device for governing three-phase imbalance of transformer area, equipment and medium

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[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0050] figure 1 It is a method flowchart of an embodiment of a method for controlling the three-phase unbalance in the station area of ​​the present application, such as figure 1 as shown, figure 1 Including:

[0051] Step 101, regularly collect the voltage and current data of the user electric meters in the station area, and the total load of the public distrib...

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Abstract

The invention discloses a method and device for governing three-phase imbalance of a transformer area, equipment and a medium. The method comprises the following steps: acquiring voltage and current data of user ammeters in the transformer area and the total load of a public distribution transformer load terminal at regular time; determining the voltage and current data of the user on each phase at each moment and the total load of the public distribution transformer load terminal; dividing the total load of the public distribution transformer load terminal by 3 to obtain an ideal load value of each phase at each moment, and calculating an ideal current value of each phase; calculating a difference value between the total current value of each phase and the ideal current value of each phase; determining a calling-in and calling-out mode of the user on each phase according to the difference value; counting calling-in and calling-out modes of each phase of users at each moment to obtain the users needing to be adjusted most frequently; calculating the adjusted three-phase current, and if the adjusted three-phase current does not accord with a preset three-phase balance degree standard, performing corresponding adjustment on each phase user. The three-phase load condition can be quickly adjusted, the load adjusting efficiency is improved, and waste of manpower and material resources is avoided.

Description

technical field [0001] This application relates to the technical field of power grid three-phase adjustment and balance, and in particular to a method, device, equipment and medium for controlling three-phase unbalance in a power grid. Background technique [0002] At present, due to the uneven distribution of power load supplied by public distribution transformers and the random change of power load, the phenomenon of three-phase imbalance in the station area is becoming more and more common. As a result, many problems are unfavorable to the healthy operation of the power grid. For the distribution network side, the three-phase imbalance reduces the transformer output and overload capacity, while increasing line loss and transformer loss. For the user side, the voltage of a certain phase is high or low due to imbalance, which affects the quality of the user voltage. There are mainly two types of existing three-phase unbalance control methods, one is to adjust the load acco...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26H02J3/14
CPCH02J3/26H02J3/144Y04S20/222Y02E40/50Y02B70/3225
Inventor 韩佳锐梁英廉
Owner ZHANJIANG POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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