基于能量块分配机制的温控负荷主动平衡控制方法

Active Balancing Control Method for Thermostatically Controlled Loads Based on Energy Block Allocation Mechanism

温控负荷是配电网供需平衡调控的重要资源,高效可行的负荷控制策略,能够使配电网达到理想的供需平衡目标。分布式光伏出力的不确定性,负荷启停的无序随机性,易造成配电网电压与负荷的波动。为此,该文提出一种基于能量块分配机制的温控负荷主动供需平衡控制方法,以平稳负荷曲线。采用吝啬算法调节设备使用能量块的顺序,使负荷调节量逐次逼近调节目标,避免多台设备同时启/停造成峰谷波动;考虑用户舒适度和用电公平,为设备分配能量块数量,避免设备长期占用电能资源;结合电压差分和时间槽延时,针对电压波动设计快速感知的分布式主动调节策略。仿真表明,该文方法能够实现负荷的有序控制、平稳负荷曲线,降低峰谷差。

Thermostatically controlled loads are important resource for regulating supply and demand balance in distribution networks.Efficient and feasible load control strategies enable distribution networks to achieve ideal supply and demand balance.The uncertainty of distributed photovoltaic output and the randomness of load starting and stopping behaviors can easily cause fluctuations in distribution network voltage and load.Therefore,this paper proposes an active supply and demand balance control method for thermostatically controlled loads based on energy block allocation mechanism to stabilize the load curve.A parsimonious algorithm is employed to optimize the sequence in which equipment utilizes energy blocks,ensuring that the load adjustment progressively converges towards the target while mitigating peak and valley fluctuations arising from simultaneous start-and-stop actions of multiple equipment.To guarantee the users’comfort and power fairness,the number of energy blocks for each device is allocated to avoid long-term consumption of power resources by the device.Combining voltage difference and time slot delay,a fast sensing distributed active control strategy is designed for voltage fluctuations.Simulation results show that this method can achieve orderly load control,smooth load curves,and reduce the peak-to-valley difference.