Abstract:
The synchronism characteristics of impulse voltage generator are analyzed and three measures are put forward to improve the synchronism characteristics of impulse voltage generator in the paper. For a 24-stage impulse voltage generator, the synchronism range improves by 40% under the 3500kV lightning impulse voltage while it improves by 25% under the 1300kV (250/2500us) operating impulse voltage.
Key words: Impulse voltage generator, synchronism characteristic, improvement
1. Introduction
Transient overvoltages (impulse) fall into three categories: slow-wave front (operation) overvoltage, fast-wave front (lightning) overvoltage and steep wave front overvoltage according to wave front time in the regulation GB311.1. The synchronism characteristics of sphere gap discharging are a key factor, which affects the performance of impulse voltage generator. The synchronism characteristics of above MV stage generators are especially important. Synchronism characteristics of a 24-stage impulse voltage generator (4800kV) are analyzed and three measures are taken to improve the range of generator in this paper.
HIMALAYAL provides innovative products that comprise high voltage test equipment, full-set high voltage test instruments, on-site test systems and on-line monitoring systems, and services regarding tests, diagnostics and asset monitoring for clients in power industry. We help to ensure safety and reliability in the power generation, transmission and distribution.
Himalayal Corporation Limited
Tel：+86 21 5059 9069
Email: info@himalayal.com
http://www.himalayal.com
http://www.himalayal.com.cn