计及无功奖惩收费的微电网日前有功无功协调调度

ACTIVE POWER AND REACTIVE POWER OPTIMAL DISPATCH OF MICROGRID CONSIDERED REACTIVE POWER REWARDS AND PENALTIES CHARGE

为解决因电网用户过度消耗无功功率造成的电网电压过低,不稳定运行的问题,提出计及无功奖惩收费的微电网日前有功无功协调调度的方法。从提高微电网的功率因数角度考虑,设计3种不同方式的无功功率奖惩收费模型,优化调度配电网中可再生能源的有功无功出力分布。同时结合电动汽车(electric vehicle,EV)的V2G(vehicle-to-grid)特性和可中断负荷(interruptible load,IL)的响应特性,在保证微电网安全运行的同时进一步实现微电网运行效益的最大化。通过仿真分析计算证明所提收费方法的可行性和有效性。

In order to solve the low grid voltage and unstable operation problems caused by the excessive consumption of reactive power by grid users,this paper proposes a microgrid daily active and reactive power coordination scheduling method that takes into consideration the rewards and punishments for reactive power.For improving the power factor of microgrid,three models of reactive power rewards and penalties are designed to optimize the distribution of active and reactive power of renewable energy in network.Combining the V2G characteristics of the electric vehicle and the response characteristics of the interruptible load,the scheduling policies can further maximize the operating benefit and ensure the safe operation of the microgrid.The feasibility and effectiveness of the proposed charging method are testified by simulation analysis.