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中文摘要：
随着风电渗透率的提高,风电场的特性对电力系统的安全运行带来了显著的影响。研究如何在提高环保效益的同时降低连锁故障的风险变得非常迫切。本文提出了一种含风电场的连锁故障模型,该模型计及了风电场结构、风电出力随机性、风电机组虚拟惯量控制和短路故障后的风电机组脱网响应等风电特性,并设置了频率稳定控制、线路过流保护、低压减载,可从有功-频率与无功-电压两方面分析风电接入后对停电风险的影响。该研究将为风电场接入系统的规划和运行提供量化停电风险、预防控制效果的基础分析工具。仿真分析了风电场接入IEEE30节点系统的停电风险并讨论了风机虚拟惯量控制、无功补偿和线路建设对于降低停电风险的效用。
英文摘要：
With the increase of wind power penetration,it is urgent to study how to reduce the risk of cascading failures while improving the environmental benefits.In this paper,a cascading failure model with wind farm is proposed,which considered the structure of wind farm,the randomness of wind power,the virtual inertia control of wind turbine,and the trip-off response of wind turbine after short circuit.The model also set up the frequency stability control,the over current protection of transmission line and the low voltage load shedding,so it can analyze the influence of wind power from two respects,i.e.the blackout risk from active power-frequency and reactive power-voltage.The research will be the basic tool of quantifying the effect of blackout risk preventing and control for the planning and operation of power system integrated with wind farm.With the simulation,the blackout risk of IEEE 30 test system integrated with wind farm is analyzed,and the effect for reducing the blackout risk of the virtual inertial control of wind turbine,reactive power compensation and line construction is discussed.
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