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Active Distribution Network Coordinated Control Based On Multi-Agent System

Posted on:2019-11-26Degree:MasterType:Thesis
Country:ChinaCandidate:C J ZhaoFull Text:PDF
GTID:2392330578972803Subject:Electrical engineering
Abstract/Summary:PDF Full Text Request
With the rapid development of renewable energy such as wind power and photovoltaic power generation,there has been a great impact on the original distribution network management system,such as voltage instability,power quality degradation,and energy imbalance.Some renewable energy sources such as wind energy and solar energy are intermittent.The internal data exchange in the system has increased,and traditional centralized management methods are prone to information congestion.The energy coordination of distributed generation is not timely,resulting in the loss of some wind and solar energy,and reducing the level of renewable energy utilizationThe Active Distribution Network is an intelligent distribution network with distributed power,energy storage device and energy management system.Active distribution networks can coordinate distributed energy sources and reduce their negative impact on distribution network systems.This thesis makes use of the charge and discharge function of energy storage system,combined with time-of-use price strategy,optimizes controllable load,and cooperates with distributed energy generation.This thesis proposes a distributed architecture and coordination control strategy for distribution networks based on Multi-agent system.Firstly,the models of photovoltaic,wind power,energy storage and other systems are established,and their control methods are formulated.Then,the agent model responsible for each system is designed.The process of coordination and optimization of each distributed power supply and load in the region is analyzed,and the impact of the energy storage system is used to reduce the impact of the photovoltaic and wind power generation.The corresponding flexible load and energy storage parts cooperate with the output of distributed generation system,and carry out regional internal autonomy management.The global agent is responsible for coordinating the energy balance of various regions and checking the range of voltage and power constraints in each region.At the same time,the overall goal of the system is established and a global optimization scheduling strategy is formulated.Finally,through the analysis of the optimization scheduling process among the wind,photovoltaic,energy storage and load in the concrete simulation,it is proved that the Multi-Agent technology manage all the systems in the distribution network orderly,improve the utilization efficiency of renewable energy,and achieve the internal energy balance of the whole distribution network.
Keywords/Search Tags:Multi-agent system, distributed energy, Active Distribution Network, coordinated control strategy, controllable load
PDF Full Text Request
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