scholarly journals Research on Control Method of Microgrid Based on Multi Distributed Generation

2021 ◽  
Vol 2083 (2) ◽  
pp. 022099
Author(s):  
Chengyi Yue ◽  
Binbin Bei
Keyword(s):  
Distributed Generation ◽  
Control Strategy ◽  
Power Supply ◽  
Control Method ◽  
Peer To Peer ◽  
Strategy Method ◽  
Distributed Power ◽  
Simulink Simulation ◽  
Efficient Control ◽  
Peer Control

Abstract Reducing the dependence of microgrid upon the communication system and realizing the efficient control of multiple distributed generation of the microgrid are problems that need to be solved urgently. Through the research, based on multiple microgrid operation modes, the peer-to-peer control strategy in microgrid is investigated, and the peer-to-peer control strategy method of microgrid is given for a variety of complex control problems of distributed power According to the peer-to-peer control strategy method, distributed power supply adopts droop control in adjusting distributed power supply in output voltage and frequency; the droop controller has P-f and Q-U droop characteristics. This paper establishes a peer-to-peer control microgrid simulation model, adopts the droop controller designed in this paper to island mode and grid-connected mode, and investigates how the microgrid switches between the two modes. In accordance with Matlab/Simulink simulation outcomes, the research examines frequency, voltage and power changes in distributed generation in the microgrid, and verifies the validity and feasibility of microgrid peer-to-peer control strategy.

scholarly journals Research on Peer-to-Peer Control Strategy for Microgrid Distributed Generation

2019 ◽  
Vol 677 ◽  
pp. 042039
Author(s):  
Haojie Ruan ◽  
Cheng Qian ◽  
Changjiang Wang ◽  
Yichi Lin ◽  
Xiaobo Zhang
Keyword(s):  
Distributed Generation ◽  
Control Strategy ◽  
Peer To Peer ◽  
Peer Control

scholarly journals Research on Improved Droop Control Strategy of Microsource Inverter Based on Internet of Things

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Di Bai ◽  
Tieyan Zhang ◽  
Zheng Yang
Keyword(s):  
Control Strategy ◽  
Power Supply ◽  
Power Distribution ◽  
Reactive Power ◽  
Control Method ◽  
Electronic Devices ◽  
Stable Operation ◽  
Power Electronic ◽  
Distributed Power ◽  
Virtual Impedance

Microgrid connects the distributed power supply with the assistance of power electronic devices. Power electronic devices, especially in the inversion link, play a crucial role in the access of distributed power to microgrid. Whether in grid-connected mode or island mode, the control method of inverters is related to the stable operation of distributed power supply and plays an important role in the control strategy of microgrid. In this paper, by adding the drop control of controllable virtual impedance, the power coupling problem caused by resistive line impedance is reduced, and virtual impedance key points such as voltage feedback and frequency compensation are added. By optimizing the power reference value, the parallel operation stability of the control strategy is improved. The experimental results show that the proposed method improves not only the stability of the system and the power quality but also the accuracy of reactive power distribution.

Control Strategy of Wind Photovoltaic and Energy Storage System Stability Running

2013 ◽  
Vol 336-338 ◽  
pp. 547-550
Author(s):  
Ji Hong Zhang ◽  
Zhen Kui Wu ◽  
Hua Li ◽  
Han Shan Li
Keyword(s):  
Energy Storage ◽  
Distributed Generation ◽  
Control Strategy ◽  
Control Method ◽  
Storage System ◽  
Energy Storage System ◽  
System Stability ◽  
Mathematics Model ◽  
Generation Efficiency ◽  
Micro Grid

Micro grid may exert adequately distributed generation efficiency, and that wind Photovoltaic and Energy Storage is a key equipment in the micro grid. Aiming at the distributed generation existing intermittence and randomicity characteristic, the paper discussed the micro grid P/Q control method under the connection grid state and the micro grid U/F control method under the disconnection grid state. It also studied the distributed generation parameters variational law under the micro grid different run mode, and built the correlative mathematics model and tested by simulation. The results show: the control strategy ensured the mice grid running stably, and achieved the system anticipative design request, and offered theory foundation for the distributed generation extend application.

scholarly journals Optimal multi-objective distributed generation location and capacity by elite strategy genetic algorithm considering timing characteristics

2020 ◽  
Vol 185 ◽  
pp. 01018
Author(s):  
Xinquan Wei ◽  
Xiangjun Duan ◽  
Lei Chen ◽  
Weiyan Zheng
Keyword(s):  
Genetic Algorithm ◽  
Distributed Generation ◽  
Power Supply ◽  
Retention Mechanism ◽  
Improved Genetic Algorithm ◽  
Distributed Power ◽  
Elite Strategy ◽  
Voltage Quality ◽  
Voltage Deviation ◽  
Node Voltage

In this paper, a distributed generation location and capacity optimization model considering the probability of scenario occurrence is established. The optimization objective is to minimize the total cost of investment, annual power loss of distribution network and node voltage deviation. The improved genetic algorithm with elitist retention mechanism is used to solve the model. The IEEE33 system is used to show the location and constant capacity of the distributed power supply under different conditions. It shows that the reasonable and optimized configuration of the distributed power supply can obtain better voltage quality and minimize the cost function, which verifies the effectiveness of the proposed model.

A Control Method of Inverter used for Distributed Power Supply under Voltage Sag Condition

2008 ◽  
Vol 128 (1) ◽  
pp. 71-82 ◽  
Author(s):  
Nobuhiko Hatano ◽  
Yuji Taniguchi ◽  
Katsuhiko Kouchi
Keyword(s):  
Power Supply ◽  
Control Method ◽  
Voltage Sag ◽  
Distributed Power

Control Strategy of Microgrid Based on Distributed Generation

2012 ◽  
Vol 430-432 ◽  
pp. 1277-1280
Author(s):  
Yao Zhao ◽  
Ru Qi Cheng ◽  
Xin Gong ◽  
Geng Shen Zhao
Keyword(s):  
Distributed Generation ◽  
Control Strategy ◽  
Power Flow ◽  
Control Method ◽  
Operation Mode ◽  
Experimental System ◽  
Control Unit ◽  
Energy Utilization ◽  
Control Mode ◽  
Power Point

Upon the traditional wind-solar hybrid distributed generation system,a single-phase microgrid experimental system platform has been built based on the DC bus,Z topology was used to increase the energy utilization ratio. On the basic of realizing the maximum power point tracker of the new energy, different microgrid controlling strategy has been designed to apply to the island and grid connected operation mode: in the cases of island running, master slave control mode will be utilized in the system and the battery will be used as the main control unit to provide the reference voltage; on the other hand, a control method which can merge the generation into the grid as much as possible will be adopted in the case of grid connected. By the use of system model, the simulation of the two operation mode switch state and power flow has been done and the feasibility and effectiveness of the control strategy can be guaranteed,it also has been verified by the microgrid experimental platform.

scholarly journals Active Synchronous Control Strategy of Distributed Power Grid Connection Based on Mobile Network

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Liu Zhang ◽  
Shaohua Ma ◽  
Yangyang Ge ◽  
Cailian Gu ◽  
Hao Wang
Keyword(s):  
Power System ◽  
Control Strategy ◽  
Control Method ◽  
Power Grid ◽  
Mobile Network ◽  
Large Power ◽  
Distributed Power ◽  
Synchronous Control ◽  
Grid Connection ◽  
Distributed Power System

This paper presents an active synchronous control scheme for distributed power grid connection based on the mobile network. This scheme avoids the disadvantages of the traditional control method, such as long waiting time and low reliability, and can meet the requirements of “the hotplug online” distributed power grid connection. The scheme uses the mobile network to collect and detect voltage slip information between the distributed power system and large power grid before operation. When the voltage slip cannot meet the requirements of grid connection, the side voltage information of the distributed power system is actively regulated. The amplitude difference and phase difference signals are, respectively, adjusted by PI, and the generated adjustment signals are, respectively, sent to the corresponding controllers through the mobile network with different weight coefficients. After the receiver receives the regulated signal, it changes the amplitude and frequency of its output voltage by shifting the pendent characteristic curve, so as to realize the distributed power system side voltage and the large power grid side voltage eventually. Finally, simulation analysis and experiments are used to verify the effectiveness and practicability of the active synchronous control strategy.

Research on Control Strategy of Microgrid Inverter Based on Virtual Synchronous Generator

2014 ◽  
Vol 529 ◽  
pp. 496-500 ◽  
Author(s):  
Xiang Chu Xu ◽  
Ling Zhu ◽  
Ben Feng Guo
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Synchronous Generator ◽  
Rotational Inertia ◽  
Simulink Simulation ◽  
Power Frequency ◽  
Output Characteristics ◽  
Frequency Controller ◽  
Virtual Synchronous Generator

In view of the conventional droop control method of inverter cannot fully meet the requirements of the microgrid operation,a new control strategy which is based on the traditional control method and combine with synchronous generator model is put forward, also known as VSG control strategy.AVSG model is establish, focusing on the design of the power frequency controller and excitation controller. The role of the rotational inertia and the power allocation problem of two VSGs in parallel networking system are verified through Matlab / Simulink simulation. The results show that, microgrid inverter based onVSG control strategy can simulate output characteristics of synchronous generator well and is conductive to microgrid operation

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