考虑配电网络重构和楼宇群主动需求响应的集成楼宇群配电网优化控制

Optimal Control of Buildings-to-distribution-network Integration System Considering Reconfiguration of Distribution Network and Active Demand Response of Buildings

为分析并抑制电力变压器热稳定安全约束对集成楼宇群配电网中灵活性资源调度的不利影响,该文构建了考虑油浸式变压器热稳定安全约束的集成楼宇群配电网新框架。该框架首先通过配电网络顺序重构和配电网络随机重构优化楼宇群主动需求响应、光伏发电和电池储能系统的调度控制,然后校验油浸式变压器的油温和相对寿命损失是否满足其热稳定安全约束,并根据校验结果调整油浸式变压器的最大允许负载率。对改进的IEEE 69节点系统的仿真结果表明,构建的框架能够通过充分利用光伏发电、电池储能系统的充放电和楼宇群的主动需求响应,有效兼顾维护变压器的热稳定、满足楼宇用户的热舒适需求、稳定配电网的节点电压和提高配电网节能水平。

A novel buildings-to-distribution-network integration framework,considering power transformers’safe constraints of thermal stability is developed in this paper.The developed framework is applied to decrease the negative effects of oil-immersed transformers’safe constraints of thermal stability on the flexible resource scheduling of distribution network.A sequential reconfiguration and a stochastic reconfiguration of distribution network is sequentially utilized to optimize the scheduling control of photovoltaic generations,battery energy storage systems and the active demand response of buildings.Then,the framework verifies whether the oil temperature and the relative life loss of each oil-immersed transformer meet its safety constraints of thermal stability.The maximum allowable load ratio of each oil-immersed transformer is adjusted according to its oil temperature and relative life loss.Simulation results on a modified IEEE 69-bus system demonstrate that the developed framework can take full advantage of photovoltaic power generations,battery energy storage systems and the active demand response of buildings to coordinate the insulation performance maintenance of oil-immersed transformers,the thermal comfort requirements of building occupants,the voltage stability and energy saving of distribution network.