面向工业生产的多可控负荷峰值需求控制算法研究

Research on Peak Demand Control Algorithm of Multi Controllable Load for Industrial Production

为降低工业生产中的负荷高峰需求和能源消耗,实现可控设备的优化运行,提出了一种峰值负载限制算法。在电力峰值需求超过预设限制时,设置一个或多个电力负荷的最佳开断时间。基于可变负载因子识别给定时间的负载动态变化,搭建了软件在环试验平台,基于CODESYS软件和PLC仿真控制器,测试了不同的可控负载配置模式,分析算法中额定功率和负载断开优先级等变量的影响。仿真结果表明所提配置模式最大需求值在任何时间间隔内都不超过预设的需求限制。通过优先关闭额定功率较大的负载或增加可控负载的预期时间可提高设备运行性能。

In order to reduce the peak load demand and energy consumption in industrial production and realize the optimal operation of controllable equipment,a peak load limiting algorithm is proposed.The optimal breaking time of one or more power loads are set when the peak power demand exceeds the preset limit.The variable load factor is used to identify the dynamic load change at a given time.A software loop test platform was built to simulate multiple electrical loads based on LabVIEW software,which was connected to the PLC simulation controller through CODESYS.The influence of variables such as rated power and load disconnection priority in the algorithm is analyzed by testing different controllable load configuration modes.The simulation results show that the maximum demand value of the proposed configuration mode does not exceed the preset demand limit in any time interval.The operating performance of the equipment can be improved by closing preferentially the load with higher rated power or increasing the expected time of controllable load.