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Method for controlling operation of automatic switching type transformer

A technology of automatic switching and operation control, which is applied in the direction of single-net parallel feeding arrangement, etc., can solve the problems of large power load and loss of electric energy, etc., and achieve the effects of prolonging service life, saving manpower and material resources, and increasing reliability

Inactive Publication Date: 2012-02-08
QINGDAO TGOOD ELECTRIC
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  • Application Information

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Problems solved by technology

The power load in actual operation fluctuates greatly according to the season and time. The power load is relatively large in the morning, middle and evening periods of the day, and most of the transformers are in light-load operation during the rest of the ten hours, which results in a large loss. electrical energy

Method used

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  • Method for controlling operation of automatic switching type transformer
  • Method for controlling operation of automatic switching type transformer

Examples

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Embodiment

[0017] In this embodiment, the existing power transmission system is selected first, that is, the control system including hardware and software, and the device and function of automatic switching transformer are added. In the power transmission system, four groups of open circuits are connected according to the principle of electricity. The first, second, third and fourth circuit breakers 3, 4, 5 and 6; then the two transformers in the power transmission system are connected to the system according to the electrical principle and are in a standby state. The specific connection methods are as follows Attached figure 2 As shown, the steps to realize automatic switching transformer protection control are:

[0018] ①Connect the circuit of the power transmission system and put the two transformers into operation;

[0019] ②Sampling the voltage and current values ​​in the transformer circuit respectively;

[0020] ③According to the voltage and current values ​​of the sampled values, ju...

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Abstract

The invention belongs to the technical field of transformer protection in an electric power transport system, and relates to a back-up protection and control technology of an automatic switching type transformer, in particular to a method for controlling operation of the automatic switching type transformer, which comprises the following steps of: first, selecting an existing electric power transport system comprising hardware and software, adding a device provided with the automatic switching type transformer and functions, and connecting four groups of circuit breaker into the electric power transport system according to principles of electricity; and then connecting two transformers in the electric power transport system into the electric power transport system according to the principles of electricity, sampling a voltage value and a current value of each transformer, judging whether switching is carried out or not, respectively controlling the operation of each circuit breaker according to software control logic relation, and controlling the switching of the transformers. The method provided by the invention has simple control principles, and is safe and reliable, the automatic switching performance is good, the manpower and material resources are saved, the energy consumption is reduced, and the service life of the transformer is prolonged.

Description

Technical field: [0001] The invention belongs to the technical field of transformer protection in power transmission systems, and relates to an automatic switching transformer backup protection control technology, in particular to an automatic switching transformer operation control method. Background technique: [0002] At present, the commonly used transformer backup protection measurement and control devices and technical methods, the main functions of its protection are: three-stage time-limited reset voltage lockout (direction) overcurrent protection; three-stage (direction) zero sequence current protection; gap zero sequence protection ; Zero sequence voltage protection; overload protection (on-load voltage regulation, ventilation start); composite voltage; PT disconnection alarm; with LCD display function, so that normal information and operations can be completed through the keyboard and LCD display; Realize remote communication with the automation control system through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
Inventor 刘志珍黎昊屈东明由恒远孙福鹏耿晓玲穆晓鹏李广智
Owner QINGDAO TGOOD ELECTRIC
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