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电网技术  2013 

考虑输电线路负载率约束和全规划周期柔性成本评估的电网规划方法

, PP. 2985-2990

Keywords: 不确定因素,负载率约束,全规划周期柔性成本,综合优化

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Abstract:

针对现有电网规划方法对未来不确定因素适应性较差的缺点,从加强系统自身鲁棒性的角度出发,通过对线路负载率约束进行柔性化表示,控制系统中最重载线路的负载率,从而在规划过程中保留部分系统潮流输送能力,为系统预留一定的运行安全裕度和对不确定因素的适应能力。同时,通过对电网投资成本、运行成本和可靠性收益在电网全规划周期内的成本评估,提出兼顾系统经济性、安全性和可靠性的电网规划模型,并用蚁群算法求解。Garver6节点测试系统的算例表明,提出的电网规划方法有效可行,有利于提高线路负载率分布的均匀程度,降低系统进入自组织临界状态和发生大规模连锁故障的风险,同时也是对整个电网规划周期内系统资源的综合优化。

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