摘要
针对发电机转子接地保护中的乒乓式转子接地保护难以解决励磁回路电压波动对保护的精确度和灵敏度的影响,采用在励磁回路中加入一个直流电压源的方法,对乒乓式转子接地保护进行改进,提出明确的方案原理,并对其灵敏度进行分析。结果表明:该方案准确度高,可靠性好,为发电机转子接地保护的研究与探索中奠定了理论基础。
For ping-pong type rotor grounding protection in generator rotor ground faulted protection is difficult to solve the influence of fluctuated voltage of excitation circuit to protect the accuracy and sensitivity. Using the method of putting a DC voltage source in the excitation circuit, to improve the ping-pong type rotor ground fault protection, which points out the scheme of principle, and the sensitivity was analyzed. The result showed that the proposed scheme with high accuracy, good reliability, and ground faulted protection of generator rotor in the research and exploration has laid a theoretical basis.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2014年第1期126-128,共3页
Journal of Shenyang Agricultural University
关键词
乒乓式转子接地保护
保护精确度
灵敏度
ping-pang rotor grounding protection
protective accuracy
sensitivity
