引用本文:张芳,毕大强,曾祥君,等.船舶环形配电网无通道保护方法研究[J].电力系统保护与控制,2015,43(2):84-89.
ZHANG Fang,BI Daqiang,ZENG Xiangjun,et al.Research on methods of non-communication protection for shipboard loop power distribution systems[J].Power System Protection and Control,2015,43(2):84-89
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船舶环形配电网无通道保护方法研究
张芳1, 毕大强2, 曾祥君1, 曾宪敏1, 倪凤燕3
1.智能电网运行与控制湖南省重点实验室，长沙理工大学，湖南 长沙 410076;2.电力系统国家重点实验室， 清华大学电机系，北京100084;3.中国船舶重工集团公司第七〇四研究所，上海200031
摘要:
环形配电网结构具有较高船舶生命力和供电可靠性，在大型船舶电力系统中逐渐得到应用。然而在环网中，传统的保护方法很难在短时间内切除电站附近的故障。针对船舶环形电网的特点，提出了两种无通道保护方法。两种方法都利用了短路故障和线路一侧保护跳闸引起另一侧支路的电流变化，方法一和方法二分别通过加速保护的动作时限特性和电流比值判据来判断故障区间，最终实现相继速动。通过Matlab/Simulink仿真验证了两种方法的可靠性和速动性。
关键词:  环形配电网  大型船舶  无通道保护方法  加速过流保护  继电保护
DOI：10.7667/j.issn.1674-3415.2015.02.013
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基金项目:
Research on methods of non-communication protection for shipboard loop power distribution systems
ZHANG Fang1, BI Daqiang2, ZENG Xiangjun1, ZENG Xianmin1, NI Fengyan3
1.School of Electrical & Information Engineering, Changsha University of Science and Technology, Changsha 410076, China;2.State Key Lab of Power System, Dept of Electrical Engineering, Tsinghua University, Beijing 100084, China;3.704th Research Institute, CSIC, Shanghai 200031, China
Abstract:
Owing to the high shipboard’s survivability and power supply reliability, the loop power distribution systems has been increasingly used in the large shipboard power systems. However, the conventional protection has a longer tripping time for the relay near to source, so that it can not clear the fault. This paper presents two methods of non-communication protection according to the characteristics of shipboard loop power distribution systems. In the methods, the changing of current through the local relay is adopted when the fault occurs and the remote breaker of the line is tripped. The two methods respectively use the time coordinations and the current ratio criterion of the accelerated overcurrent protections to determine the fault zone, and then accelerated trip of the local break. The simulation results of the Matlab/Simulink verify the reliability and the speed.
Key words:  loop power distribution systems  large shipboard power systems  non-communication protection  accelerated overcurrent protection  relay protection
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