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arXiv · 1907.06189

Emergency DC Power Support Strategy Based on Coordinated Droop Control in Multi-Infeed HVDC System

Ye Liu·Chen Shen·Yankan Song·Jun Yan
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Abstract

With the complex hybrid AC-DC power system in China coming into being, the HVDC faults, such as DC block faults, have an enormous effect on the frequency stability of the AC side. In multi-infeed HVDC (MIDC) system, to improve the frequency stability of the receiving-end system, this paper proposes an emergency DC power support (EDCPS) strategy, which is based on a designed droop characteristic between the active power of LCC-HVDC lines and the receiving-end system frequency. Then, a coordinated optimization method is proposed to determine the droop coefficients of the MIDC lines. To test the proposed EDCPS method, the electromagnetic transient (EMT) model of a MIDC system is built on the CloudPSS platform, and the test results verify the effectiveness of the proposed EDCPS strategy.

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Ye Liu, Chen Shen, Yankan Song, Jun Yan. 2019-07-14. Emergency DC Power Support Strategy Based on Coordinated Droop Control in Multi-Infeed HVDC System. https://arxiv.org/abs/1907.06189

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