Analysis on Operating Characteristics of the Multi-Send HVDC System in Xinjiang Power Grid

doi:10.11930/j.issn.1004-9649.2014.4.102.5

Abstract

Abstract: This paper applies MIIF(Multi-Infeed Interaction Factor) and MOSCR(Multi-send Operating Short Circuit Ratio) and other index parameters to analyze the interaction between AC/DC and multiple DC systems of ±1 000 kV and ±800 kV in Xinjiang Power Grid. Analyzing data is the high load mode of Xinjiang Power Grid in the winter of 2015, on this basis, further simulation is implemented by using BPA simulation software to analyze the characteristics of multiple DC systems interactions and the emergency support with DC power, as well as the system stability with DC faults. Analysis results show that in the typical fault conditions such as single-pole block, the interaction between AC/DC and multiple DC systems is reasonable, but double-pole block and other serious conditions will make the system in a risk of angle and voltage instability. Power supply is one of the key factors to support power grid safety. Using emergency support with DC power can improve the stability of the sending system.

Key words: HVDC power transmission, multi-send DC system, MOSCR, multiple DC system interactions, emergency support with DC

CLC Number:

TM72

CHEN Shu-yong, PANG Bo, CHEN De-zhi, NIU Shuan-bao, WANG Ji-li, HUO Chao, SONG Yun-ting. Analysis on Operating Characteristics of the Multi-Send HVDC System in Xinjiang Power Grid[J]. Electric Power, 2014, 47(4): 102-107.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.4.102.5

https://www.electricpower.com.cn/EN/Y2014/V47/I4/102

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