Shulou(Shulou.com)06/02 Report--

This article mainly introduces "what are the conditions for the operation of the closed ring". In the daily operation, I believe that many people have doubts about the conditions for the operation of the closed ring. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what are the conditions for the operation of the closed ring?" Next, please follow the editor to study!

The conditions are as follows: (1) the phase of the closing loop should be consistent, and the voltage difference and phase angle should conform to the regulations; (2) for the operation of a more complex loop network, calculation or verification should be carried out first, and contact with relevant parties before and after operation; (3) the change of power flow in the closed loop network should not exceed the restrictions of power grid stability, equipment capacity and so on.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

The main results are as follows: 1. The phase of the closing point should be consistent. If the phase change may be caused by the first ring closure or maintenance, it must be proved by measurement that the phases on both sides of the ring closing point are consistent.

2. In the case of an electromagnetic ring network, the difference between the transformer wiring groups in the ring network is zero; under special circumstances, it is calculated and verified that the relay protection will not misoperate and the relevant loop equipment will not be overloaded, and the closed loop operation is allowed when the transformer wiring difference is 30 °.

3. After closing the ring, it will not cause the overload of the components in the ring network.

4. the voltage of each bus should not exceed the specified value.

5. The relay protection and safety automatic device should adapt to the operation mode of the ring network.

6. The stability of the power grid meets the prescribed requirements.

It should also be noted that in the operation of the closed loop, it is necessary to ensure that the phases on both sides of the closing point are the same, the voltage difference and phase angle should be in line with the regulations, and that the change of power flow in the closed loop network does not exceed the limits of power grid stability and equipment capacity. for the operation of more complex ring networks, calculation or verification should be carried out first, and contact with relevant parties before and after operation.

The long-term closed-loop operation of the two lines does not have many advantages. In many cases, the closed-loop operation of the two lines is to smoothly "reverse the circuit", that is, power supply from one line to another.

At this point, the study of "what are the conditions for the operation of the closed ring" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.