Multi-source Coordinated Scheduling of Receiving Power System Considering Voltage Stability Based on Information Gap Decision Theory

doi:10.11930/j.issn.1004-9649.202407094

Abstract

Abstract:

To improve renewable energy consumption under the background of dual carbon, and solve problem of multi-source coordinated scheduling with DC transmission, a multi-source coordinated scheduling of receiving power system considering voltage stability based on information gap decision theory (IGDT) is proposed. Firstly, the voltage stability indicator is constructed, which indicates distance between the system voltage state and the voltage stability limit state. Then, aim at minimizing the system operation cost and wind curtailment penalty, a multi-source power receiving ability promotion model considering thermal/ cascade hydro/wind power generation, energy storage and DC transmission coordination is proposed. The models of multi-sources in the system are established, and the AC power flow and hydropower conversion constraints are linearized by Taylor series expansion and triangle approximation. On this basis, voltage stability constraints are generated through voltage stability margin threshold, and voltage stability constraints are added to multi-source coordinated optimization problem for the receiving power system through each iteration to achieve the improvement of voltage stability indicator. To consider uncertainty of wind power output and load demand, a multi-source coordinated scheduling of receiving power system considering voltage stability based on IGDT is proposed. Finally, the effectiveness of the proposed model is verified by case studies.

Key words: cascade hydro power, renewable energy, DC receiving-end, IGDT, voltage stability

YE Xi, HUANG Gechao, WANG Xi, WANG Yanfeng, ZHU Tong, HE Chuan, ZHANG Yuqi. Multi-source Coordinated Scheduling of Receiving Power System Considering Voltage Stability Based on Information Gap Decision Theory[J]. Electric Power, 2025, 58(5): 121-136.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202407094

https://www.electricpower.com.cn/EN/Y2025/V58/I5/121

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References 41

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机组	水电转换系数	初始水头	最大出力/MW
H1	6.197	0.82679	220
H2	7.182	0.71359	190

机组	水电转换系数	初始水头	最大出力/MW
H1	6.197	0.82679	220
H2	7.182	0.71359	190

充放电功率上限/MW		容量上限/MW		充放电效率
30		150		0.9

充放电功率上限/MW		容量上限/MW		充放电效率
30		150		0.9

机组	最小有功出力/ MW	最大有功出力/ MW	最小无功出力/ (MW·A)	最大无功出力/ (MW·A)	爬坡率/ (MW·h^–1)	最小开机时间/ h	最小关机时间/ h
G1	25	100	0	300	50	8	4
G2	25	200	0	100	150	5	4