Static Voltage Stability Analysis of Multi-infeed Systems with Renewable Energy and Multiple Static Var Generators
Basic Research|更新时间:2026-10-16
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Static Voltage Stability Analysis of Multi-infeed Systems with Renewable Energy and Multiple Static Var Generators
Automation of Electric Power SystemsVol. 50, Issue 20, Pages: 90-98(2026)
作者机构:
1.浙江大学工程师学院,浙江省杭州市 310027
2.广西大学电气工程学院,广西壮族自治区南宁市 530004
3.浙江大学电气工程学院,浙江省杭州市 310027
4.全省可再生能源电气技术与系统重点实验室,浙江省杭州市 310027
作者简介:
基金信息:
National Key R&D Program of China(2023YFB2405900);National Natural Science Foundation of China(52207140);Zhejiang Provincial Natural Science Foundation of China(LY23E070003)
HU Maolin,YUAN Hui,LOU Yuntian,et al.Static Voltage Stability Analysis of Multi-infeed Systems with Renewable Energy and Multiple Static Var Generators[J].Automation of Electric Power Systems,2026,50(20):90-98.
HU Maolin,YUAN Hui,LOU Yuntian,et al.Static Voltage Stability Analysis of Multi-infeed Systems with Renewable Energy and Multiple Static Var Generators[J].Automation of Electric Power Systems,2026,50(20):90-98.DOI: 10.7500/AEPS20250830005.
Static Voltage Stability Analysis of Multi-infeed Systems with Renewable Energy and Multiple Static Var Generators
To enhance the voltage support capability of renewable energy bases
grid codes require that a certain proportion of static var generators (SVGs) should be installed in these bases. However
how SVGs affect the static voltage stability of renewable energy bases remains unclear. To address this issue
a static voltage stability analysis method for multi-infeed systems with renewable energy and multiple SVGs is proposed. Firstly
the power flow Jacobian matrix and characteristic equation of the multi-infeed system with multiple SVGs are derived
suitable for static voltage stability analysis. Secondly
under certain assumptions
it is proved that the static voltage stability analysis of the original multi-infeed system can be simplified to analyzing the static voltage stability of the weakest characteristic subsystem
and it is demonstrated that the generalized short-circuit ratio (gSCR) is applicable to the static voltage stability analysis of multi-infeed systems with multiple SVGs. On this basis
two sufficient conditions for static voltage stability of the system in the constant reactive power control mode of multiple SVGs are provided. Finally
it is shown that when SVGs adopt the constant AC voltage control mode
the improvement in system static voltage stability is superior to that in the constant reactive power control mode. Simulation results verify the theoretical analysis and the correctness of the proposed static voltage stability analysis method.
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