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Mountain box-type transformer control system

A box-type transformer and control system technology, applied in circuit devices, electrical components, etc., can solve problems such as time-consuming and inability to restore the operation of the entire field equipment in time, to reduce workload, avoid protection malfunction, and avoid large currents Effect

Pending Publication Date: 2022-04-15
华能(福建连城)新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment divisions of mountain wind farms are relatively scattered. In this way, it takes a long time to complete the power transmission operation of the box-type transformers in the whole field. If there is a power outage in the whole field caused by a fault on the grid side, the operation of the entire field equipment cannot be resumed in time.

Method used

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  • Mountain box-type transformer control system
  • Mountain box-type transformer control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , a mountain box-type transformer control system, including: a control module and n transformers;

[0029] The control module communicates with the first transformer through the first optical fiber, and the i-th transformer communicates with the i+1-th transformer through the i+1th optical fiber (i=1,...,n-1);

[0030] There is a time t in the control module, which is used to obtain the status information of the transformer, and control the opening or closing of the switches on the high-voltage side and low-voltage side of the n transformers at intervals of time t in order, specifically:

[0031] The status information of the transformer includes the real-time value of the multi-channel switch of the transformer, such as heavy gas, light gas, ultra-high temperature, high temperature, low oil level, abnormal pressure, differential protection action, high-voltage over-current protection action, non-electricity 1-4 , high-voltage side circuit breaker, high-vo...

Embodiment 2

[0034] The control module is newly connected with a 24-core optical fiber, and communicates with the nth transformer through the n+1th optical fiber, and the optical fiber communication forms a ring network layout to ensure that all box-type transformers will not be interrupted due to power failure of a single box-type transformer.

Embodiment 3

[0036] In the process of power transmission of transformers in the whole station, the existing control interval time mostly depends on human experience judgment, the time interval fluctuates greatly, and there is no scientific and accurate interval time control. In this embodiment, the influence of the box-type transformer excitation inrush current is fully considered, and an appropriate interval time is selected to ensure scientific and safe start-up and shutdown of the box-type transformer.

[0037] Taking the Taikai box-type transformer S11-2700 / 35 three-phase transformer as an example, the excitation inrush current simulation is carried out (the excitation inrush current simulation waveform is as follows figure 2 shown). The peak value of the excitation inrush current (phase current) on the high voltage side of the box-type transformer can reach 136A, which is 136 / 24.5=5.55 times of the rated phase current. The excitation inrush current of the transformer can decay to th...

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Abstract

The invention relates to a mountain box-type transformer control system. The mountain box-type transformer control system comprises a control module and n transformers, the control module is in communication connection with the first transformer through a first optical fiber, the ith transformer is in communication connection with the (i + 1) th transformer through the (i + 1) th optical fiber, and the control module is in communication connection with the nth transformer through the (n + 1) th optical fiber (i = 1,..., n-1); and time t is set in the control module, and the control module is used for acquiring state information of the transformers and controlling opening or closing of the switches on the high-voltage sides and the low-voltage sides of the n transformers according to the time t in sequence.

Description

technical field [0001] The invention relates to a mountainous box-type transformer control system, which belongs to the field of transformer control. Background technique [0002] At present, when the staff conducts power-off and power-off operations for all transformers in the field, they need to stop power-off and power-off operations for each transformer individually in turn, and sometimes it is necessary to arrange special personnel to check the status of the equipment on site. However, the equipment divisions of mountain wind farms are relatively scattered. In this way, it takes a long time to complete the power outage operation of the box-type transformers in the whole field. If there is a power outage in the whole field caused by a fault on the grid side, the operation of the entire field equipment cannot be restored in time. [0003] Therefore, a control system that can automatically control the start and stop of the transformer is needed. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 陈瑜翁文张平王鸿刘子煌
Owner 华能(福建连城)新能源有限公司
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