电测与仪表2026，Vol.63Issue(4)：11-23,13.DOI:10.19753/j.issn1001-1390.2026.04.002
考虑电压越限风险的新型电力系统分布式光伏发电出力调控方法研究
Research on the control method of distributed photovoltaic power generation output in novel power system considering the voltage over-limit risk
摘要
Abstract
After the distributed photovoltaic power source is connected to the distribution network,its output is af-fected by environmental factors such as sudden changes in irradiance and cloud cover,showing significant asymmet-ric fluctuations and thick tailed distribution characteristics,resulting in a multi-modal probability distribution of node voltage(i.e.multiple peaks in the probability distribution),which makes it difficult to accurately calculate the risk index of voltage over-limit of the distribution network nodes and increases the risk of voltage over-limit.On this basis,a new method for regulating the output of distributed photovoltaic power generation in novel power system considering the risk of voltage over-limit is proposed.The multi-head attention neural network-factorization machine(MANN-FM)model is utilized to predict future photovoltaic output,capturing the randomness and intermittency characteristics of photovoltaic output more accurately.Based on these prediction results,the Cornish-Fisher method is used to calculate the risk index of voltage over-limit at distribution network nodes connected to distributed photo-voltaic power,and to evaluate the risk of voltage over-limit.When it is predicted that the output of photovoltaic power generation will exceed the risk value of grid voltage over-limit,the output of distributed photovoltaic power generation is dynamically adjusted by implementing a comprehensive control strategy of active power and reactive power.When the risk of voltage over-limit is relatively small,only reactive power regulation is implemented.If the risk indicators continue to rise and exceed the preset threshold,the active and reactive power cooperative control mode will be activated.Through the linked control of limiting the maximum output power and enhancing reactive power compensation,the voltage of the distribution network is ensured to remain stable within the safe operation range.The experimental results show that in the typical scenario based on the 10 kV medium-voltage distribution network,the proposed method has been verified for effectiveness in the IEEE 33-node system.The voltage limit is exceeded only once,and the power fluctuation is controlled around 10 kW.It can ensure that the distribution net-work voltage operates within a safe range and is suitable for practical applications.关键词
光伏发电出力/电压越限风险/Cornish-Fisher方法/有功-无功综合控制策略/MANN-FM模型Key words
photovoltaic power generation output/risk of voltage over-limit/Cornish Fisher method/integrated ac-tive reactive power control strategy/MANN-FM model分类
信息技术与安全科学引用本文复制引用
张佳祺,余姗姗,徐凌寒..考虑电压越限风险的新型电力系统分布式光伏发电出力调控方法研究[J].电测与仪表,2026,63(4):11-23,13.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20231158(030100KC23110053) （GDKJXM20231158(030100KC23110053）
