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发明公开
CN103715721A 交直流混合电网联合实时调峰方法 有权

交直流混合电网联合实时调峰方法
摘要：
本发明公开了一种交直流混合电网联合实时调峰方法，属于电力系统运行与控制技术领域。本发明提出解除非安全稳定约束的联络线计划和直流系统输电计划的约束，将交直流混合电网作为一个整体，建立综合考虑新能源电站综合评价指标及其功率限制量、可中断负荷限制量、AGC机组经济性和环保性，以及网损的目标函数，以AGC机组有功调节速率、直流系统功率、电网稳态频率、有功备用和安全稳定输电通道的在线输电能力为约束，计及母线负荷预测、新能源电站功率预测和非AGC机组发电计划，进行新能源电站功率、AGC机组有功、直流系统功率和可中断负荷控制的优化计算。本发明可充分利用交直流混合电网的综合输电能力，提高新能源发电的接纳水平。
摘要（英）：

The invention discloses an alternating current and direct current hybrid power grid joint real time peak shaving method which belongs to the technical field of power system operation and control. According to the invention, the constraints of a contact line plan of a non safe and reliable constraint and a direct current system power transmission plan are relieved; alternating current and direct current hybrid power grids are used as a whole body; an objective function which comprehensively considers the comprehensive evaluation index, the power limit, the interruptible load limit, the AGC unit economy and environmental friendliness, and the power loss of a new energy power station is established; by using AGC unit active regulation rate, direct current system power, power grid steady frequency, active reserve and the online power transmission capacity of a safe and reliable power transmission channel as the constraints, and by considering bus load prediction, new energy power station power prediction and a non AGC unit power generation plan, optimization calculation is carried out on the new energy power station power, an active AGC unit, the direct current system power and interruptible load control; the comprehensive power transmission capacity of alternating current and direct current hybrid power grids is fully used; and the acceptance level of new energy power generation is improved.

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