1.Research Center for Renewable Energy Generation Engineering, Ministry of Education, Hohai University, Nanjing 210098, China;2.State Grid Anhui Electric Power Co., Ltd, Hefei 230061, China
This work is supported by State Grid Corporation of China (Research on the Whole Process Decision Support Technology for Frequency and Voltage Dynamic Stability of Receiving-end Power Grid, No. XT-71-17-008).
In order to deal with the transient voltage and transient frequency stability problems of the multi-infeed high-voltage direct current (HVDC) receiving-end power grid when HVDC lines are blocked, an emergency coordination control strategy considering HVDC power emergency lifting, synchronous condenser emergency control and load shedding is proposed. Firstly, the transient voltage and frequency stability margin index based on multiple two-element notations is adopted. The impact of HVDC power emergency lifting and synchronous condenser emergency control on transient voltage stability of the receiving-end power grid is analyzed, and an emergency coordination control scheme with multiple control means is proposed. Secondly, based on the proposed scheme, an optimization model is established for the emergency coordination control of receiving-end power grid with multiple control means, which considers both transient voltage and transient frequency stability constraints and aims at minimizing the control cost. Then, the sensitivity is used to linearize the model, where the negative impact of HVDC power emergency lifting on transient voltage stability is considered. Moreover, the model is solved by the successive linear programming method. Finally, results of a real example in East China power grid show that the proposed control strategy is effective.
ZHAO Jinquan,TANG Jianjun,WU Di,et al.Emergency Coordination Control Strategy for Transient Voltage and Transient Frequency Stability in HVDC Infeed Receiving-end Power Grid[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20191019002.Copy