Platinum Intellectual Property LLP
Differential protection method for bridge circuit in current converter control system
The present invention relates to a differential protection method for bridge circuit in current converter control system, including the steps of: 1). obtaining sample values of the three-phase current for the current converter control system at AC side thereof, and calculating the absolute value of each sampling value respectively; 2). calculating a value of current at the AC side of the current converter control system; and 3). determining whether to perform a relay protection for the current converter control system according to the value current at the AC side of the current converter control system. The method of the present invention provided, is fast, convenient, and with a small amount of calculation. The current converter control system determines whether to perform a relay protection in a short time. Also it reduces the possibility that the equipment burned because of cannot break the circuit in time.
XJ GROUP CORPORATION XI'AN JIAOTONG UNIVERSITY STATE GRID CORPORATION OF CHINA XUCHANG XJ SOFTWARE TECHNOLOGIES LTD XJ ELECTRIC CO., LTD
H H H H H H H
H02M H02M H02H H02M H02M H02M H02M
inventional additional inventional additional additional additional inventional
Yuanhang Guobin Peiyao Xing Ruizhi Xu Guobing
Yang Li Liu Liu Jiang Zhu Song