search
HomeCommon ProblemWhat are the three major conditions for closed loop operation?

The conditions are: 1. The phases of the loop closing points should be consistent, and the voltage difference and phase angle should meet the regulations; 2. For the operation of more complex ring networks, calculation or verification should be performed first, and relevant information should be used before and after the operation. 3. It should be ensured that the power flow changes in the closed loop network do not exceed the limitations of power grid stability, equipment capacity, etc.

What are the three major conditions for closed loop operation?

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

1. The phases of the loop closing points should be consistent. If the phase change may occur after the first loop closing or maintenance, it must be measured to prove that the phases on both sides of the loop closing point are consistent;

2. If it is an electromagnetic ring network, the difference in the wiring groups of the transformers in the ring network is zero; under special circumstances, after calculation and verification, the relay protection will not malfunction and the relevant loop equipment will not be overloaded, and the loop closing operation is allowed when the transformer wiring difference is 30°;

3. It will cause overloading of various components in the ring network;

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

5. Relay protection and safety automatic devices should adapt to the ring network operation mode;

6. The power grid is stable and meets the specified requirements.

Also note that during the loop closing operation, it must be ensured that the phases on both sides of the loop closing point are the same, and the voltage difference and phase angle should comply with regulations; it should be ensured that the power flow changes in the loop closing network do not exceed the stability of the power grid and the equipment capacity. Due to restrictions in other aspects, for the operation of more complex ring networks, calculation or verification should be performed first, and relevant parties should be contacted before and after the operation.

There are not many advantages to running the two lines in a loop for a long time. In many cases, two lines operate in a loop in order to smoothly "reverse", that is, supply power from one line to another line.

For more computer-related knowledge, please visit the FAQ column!

The above is the detailed content of What are the three major conditions for closed loop operation?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft