Research and improvement of single-phase ground fault compensation in distribution network
- Resource Type
- Conference
- Authors
- Huai, Xiaowei; Wang, Gensheng; Ma, Haihang; Fan, Bishuang
- Source
- 2021 IEEE International Conference on Computer Science, Electronic Information Engineering and Intelligent Control Technology (CEI) Computer Science, Electronic Information Engineering and Intelligent Control Technology (CEI), 2021 IEEE International Conference on. :650-653 Sep, 2021
- Subject
- Computing and Processing
Robotics and Control Systems
Signal Processing and Analysis
Current control
Coils
Voltage measurement
Grounding
Current measurement
Distribution networks
Production
Non-effectively grounded distribution network
Single-line to ground (SLG) faults
Passive arc suppression
Active arc suppression
Injection current
- Language
The power distribution system generally adopts neutral non-effective grounding. Most grid faults are single-line to ground (SLG) faults. As the SLG faults are difficult to monitor online, they severely threaten human health and lives and damage power supply equipment. The Peterson coils are widely used in the SLG fault arc suppression, but it belongs to passive arc suppression method which cannot compensate the active power and harmonic current. The ground residual current is still large. Active arc suppression method makes up for the defect of Peterson Coil. In order to improve the self-healing effect of single-phase grounding fault. This paper summarizes the research status of active full compensation technology, and further studies the traditional arc suppression strategy based on active voltage control. An improvement scheme of injection current control strategy is proposed. The ratio of the zero-sequence current and the zero-sequence voltage is applied to modify the reference value of the injection current instead of measuring the ground parameters. Results of simulation validate the effectiveness of the proposed control strategy.