论文部分内容阅读
针对高渗透微电网接入配电系统后,给主网调度稳定运行和可靠性带来困难这一问题,基于Multi-agent提出一种新的微网控制模型,该模型将微网及内部单元作为a-gent节点行为,构建了微网的两层控制体系:对底层单元agent采用恒功率和恒频恒压控制方法;对上层微网agent,提出恒交换功率控制策略,使微电网在并网运行时表现为单一的可控负荷,微网与主网的交换功率维持恒定,减少主网的调度难度。通过建立微网两层控制体系相应的具体模型,并对两层控制体系之间的协同策略作具体分析,保证了微电网在不同运行模式下的稳定运行。在PSCAD中进行建模仿真,结果表明,该控制模型使微电网并网和孤网时均能可靠运行,且保证了对主网调度的友好性。
Aiming at the problem that the high-penetration microgrid is connected to the power distribution system, which brings difficulties to the stable operation and reliability of the main-network dispatch, a new microgrid control model based on Multi-agent is proposed. The model combines the microgrid and the internal unit As a-gent node behavior, a two-layer control system of microgrid is constructed: constant power and constant-frequency constant-voltage control are applied to the underlying unit agent; and constant exchange power control strategy is proposed for the upper microgrid agent, When the network is running, it shows a single controllable load, and the switching power of the microgrid and the main network remains constant, reducing the difficulty of dispatching the main network. Through the establishment of the corresponding model of the two-tier control system of microgrid and the concrete analysis of the coordination strategy between the two control systems, the microgrid can be guaranteed to operate stably in different operating modes. The results of simulation and simulation in PSCAD show that the control model can operate reliably and reliably in both grid-connected and isolated grids and ensure the scheduling of the main network.