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                                                                               Case study of jy-bqfk cooling control cabinet in Shanghai Huxi 1000kV substation
 
 

Project Profile:

The 1000kV Huxi substation is an important part of Anhui power transmission project, which is listed in the national "12th Five Year Plan" development plan, and is a key implementation project to implement the strategy of "strengthening communication and strengthening direct link" of national power grid.

"Anhui east power transmission project" is the world's first double circuit UHV AC transmission project on the same tower. The project starts from Huainan in Anhui Province, passes through southern Anhui and Northern Zhejiang Province, and finally arrives at Shanghai Huxi substation. The long-term transmission capacity will reach 9 million kW to 10 million KW, and the annual power transmission capacity is about 50 billion kw. This is of far-reaching significance for ensuring the safe and reliable power supply of Shanghai City, and is conducive to further improving the ability of the Yangtze River delta power grid to accept power from outside the region, and to resist the severe fault of large capacity DC transmission project. Anhui east power transmission project is completely designed, manufactured and constructed by China, which represents the highest level of international high voltage AC transmission technology development, equipment manufacturing and engineering application.

The project is an important part of the planned UHV loop network in the Yangtze River Delta, which is conducive to solving the problem of short-circuit current exceeding the standard in East China 500kV power grid, improving the flexibility and adaptability of power grid operation, significantly enhancing the ability of power grid to withstand serious faults, ensuring the safe operation of large capacity and multi infeed DC system, further expanding the proportion of external power and meeting the power demand of Yangtze River Delta It is of great significance to the implementation of the national air pollution prevention and control action plan.

 

Product introduction:

With advanced technology and perfect service, the transformer cooling control cabinet of our company, installed in Shanghai Huxi substation, has successfully passed the acceptance and officially put into operation. In order to put the project into operation smoothly, the company has specially organized a project research team to overcome one technical difficulty after another from the analysis of the technical indicators in the early stage of the project to the optimization of the production process in the later stage, such as the reliable operation of the system under the high electromagnetic radiation environment, and the temperature and humidity control of the outdoor long-term operation cabinet in the Yangtze River Delta area. After many project argumentation and many experimental tests, finally, the rigorous and responsible Jinyuan people handed in a qualified answer paper and achieved excellent results again.

The features of 1000kV transformer cooling control cabinet are as follows:

1. ABB brand components are used in the cabinet, and strict inspection is carried out, and the margin of components is correspondingly increased in the high current circuit.

2. The structure and size of the cabinet are optimized and stainless steel is selected. Based on the regional problems, the problems of corrosion resistance, typhoon prevention, high temperature protection and condensation prevention are considered.

3. The wiring process adopts the method of separating the primary circuit from the secondary circuit, separating the AC and DC circuits, and separating the strong current from the weak current.

4. The components in the cabinet are arranged longitudinally according to the control object, the gap between the components is appropriately enlarged, and the large current and hot spot distribution are considered as a whole.

5. Enhanced electromagnetic shielding in high environment.

6. The control logic shall be implemented in strict accordance with DL / T 572-2010 power transformer operation regulations.

 

 

           

Diagram of 1000kV transformer in Huxi substation    

 

 

    

      1000kV transformer cooling control cabinet

 

 

 

 

 

 

 

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