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新能源电力系统国家重点实验室(华北电力大学),北京市 102206
Received:20 October 2022,
Revised:2023-04-09,
Published Online:23 October 2023,
Published:25 November 2023
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杨彬,贾科,李俊涛等.基于电压上升限时检测的含新能源配电网自适应重合闸[J].电力系统自动化,2023,47(22):66-74.
YANG Bin,JIA Ke,LI Juntao,et al.Adaptive Reclosing of Distribution Network with Renewable Energy Based on Voltage Rise Time Limit Detection[J].Automation of Electric Power Systems,2023,47(22):66-74.
杨彬,贾科,李俊涛等.基于电压上升限时检测的含新能源配电网自适应重合闸[J].电力系统自动化,2023,47(22):66-74. DOI: 10.7500/AEPS20221020003.
YANG Bin,JIA Ke,LI Juntao,et al.Adaptive Reclosing of Distribution Network with Renewable Energy Based on Voltage Rise Time Limit Detection[J].Automation of Electric Power Systems,2023,47(22):66-74. DOI: 10.7500/AEPS20221020003.
断路器跳闸后下游分布式新能源可能持续带故障运行,配电网传统无检重合闸盲目投切将导致系统遭受二次冲击。文中面向含高比例分布式新能源配电网提出一种基于电压上升限时检测的自适应重合闸方法。首先,基于对跳闸后计及新能源故障穿越控制的配电网故障特性分析,探明了跳闸后系统电压与新能源-负荷功率比值间的分段映射关系;利用伴随故障清除的电压上升特性,提出了基于电压差积分的故障状态检测判据;进而,融合保护动作信息与新能源故障穿越时间极限对故障检测时间进行规限,提出重合闸延时自适应整定方案。仿真结果表明
所提方法能够可靠检测不同位置、类型的瞬时性故障清除,并根据故障状态自适应调节重合闸延时,加快系统供电恢复。
After the circuit breaker trips
downstream distributed renewable energy sources (RESs) may continue to operate with faults
and blind switching of traditional non-inspection reclosing in the distribution network will cause the system to suffer from secondary impacts. This paper proposes an adaptive reclosing method based on voltage rise time limit detection for distribution networks with high proportion of distributed RES. First
based on the analysis of distribution network fault characteristics taking into account RES fault ride-through control after tripping
the segmented mapping relationship between system voltage and RES-load power ratio after tripping is explored. A fault state detection criterion based on voltage difference integration is proposed by utilizing the voltage rise characteristic accompanying fault clearing. Furthermore
the fusion of protection action information and the time limit of RES fault crossing is used to limit the fault detection time
and an adaptive reclosing delay setting scheme is proposed. The simulation results show that the proposed method can reliably detect instantaneous fault clearing with different positions and types
and adaptively adjust the reclosing delay based on the fault status to accelerate the recovery of system power supply.
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