YANG YI-MIN1, QIN YI2. Determination Method on Allowable Capacitance Deviation Limits Between up and down Segments of the Cabinet Shunt Capacitors. [J]. Power capacitor & reactive power compensation, 2011, 32(4): 5-10.
YANG YI-MIN1, QIN YI2. Determination Method on Allowable Capacitance Deviation Limits Between up and down Segments of the Cabinet Shunt Capacitors. [J]. Power capacitor & reactive power compensation, 2011, 32(4): 5-10. DOI: 10.14044/j.1674-1757.pcrpc.2011.04.003.
箱式并联电容器上下段容差限值的确定方法
摘要
35 kV级箱式并联电容器的内部故障采用电压差动保护
为满足保护整定的要求
这类电容器上下段电容的制造偏差须加以限制
但这种限值应与集合式并联电容器的限值有所区别。文章根据箱式并联电容器的结构特点
讨论了这类产品的保护整定原则
通过对不同规格典型产品的计算分析
归纳出确定这类电容器上下段电容制造偏差限值的方法。
Abstract
The voltage differential protection is usually used for the protection of 35 kV cabinet shunt capacitors for the internal faults.It is necessary to limit the manufacturing deviations of capacitance between up and down segments of these capacitors for satisfying the requirement of protection setting
but such limited deviation values shall be different from that of assembling shunt capacitors.In this paper
the setting principle of the voltage differential protection according to the structures and characteristics of cabinet shunt capacitor is discussed
and the method to determine such deviation of shunt capacitor is summarized throughout calculation and analysis of different types of capacitors.
关键词
箱式并联电容器电压差动保护上下段电容偏差继电保护整定值
Keywords
cabinet shunt capacitorvoltage differential protectioncapacitance deviation between up and down segmentsrelaying protectionsetting value