FAULT LOCATION OF ACTIVE DISTRIBUTION NETWORK WITH LIMITED PMU

Tao Weiqing; Xiao Songqing; Qin Minghui; Li Lin; Cao Jun

doi:10.19912/j.0254-0096.tynxb.2020-0745

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (4) : 112-120. DOI: 10.19912/j.0254-0096.tynxb.2020-0745

Topics on Key Technologies for Safety of Electrochemical Energy Storage Systems and Echelon Utilization of Decommissioned Power Batteries

FAULT LOCATION OF ACTIVE DISTRIBUTION NETWORK WITH LIMITED PMU

Tao Weiqing¹, Xiao Songqing¹, Qin Minghui², Li Lin², Cao Jun²

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Abstract

As for active electric power distribution with distributed generation, the fault location method based on the monitoring information of phasor measurement unit（PMU） is proposed to analyze the fault process and achieve the goal of location. First, the configuration of PMU is optimized based on the topology optimization method, with the electric power distribution divided into different areas meantime. Then according to the real-time measured voltage and current phasors of PMU, by the principle of power increment direction the fault area can be located. Secondly, calculating the current value of each PMU of corresponding node under different types of faults in each segment of the candidate fault area, after compared with the actual short-circuit current measurement value, the fault segment can be selected based on the calculated error of the locating optimization model. For the fault segment, the double-end phasor information is finally utilized to detect the specific fault location. The simulations of different types of short-circuit at different location and different power output control are conducted under the improved IEEE 33 nodes power distribution system. The results show that the locating error under different short circuit conditions is less than 1%.

Key words

electric power network / distributed generation / phasor measurement unit / fault location / topology optimization / locating optimization model

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Tao Weiqing, Xiao Songqing, Qin Minghui, Li Lin, Cao Jun. FAULT LOCATION OF ACTIVE DISTRIBUTION NETWORK WITH LIMITED PMU[J]. Acta Energiae Solaris Sinica. 2022, 43(4): 112-120 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0745

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