NDLI: Control of virtual power plant in microgrids: a coordinated approach based on photovoltaic systems and controllable loads

Content Provider	IET Digital Library
Author	Liu, Yun Xin, Huanhai Wang, Zhen Gan, Deqiang
Abstract	Renewable energy sources (RESs) such as solar energy are cost-effective to meet part of the energy needs. However, the inherent fluctuation and intermittence of RESs may deteriorate the stability and security of power grids. Energy storage systems can mitigate the problem, but they are very expensive. For this reason, a coordinated control method of virtual power plant (VPP), which includes photovoltaic systems (PVs) and controllable loads, is proposed in this study so that the aggregated power output of the VPP can be flexibly adjusted in a wide range. To achieve this, power output of the PVs and operational modes of controllable loads are coordinated by solving a mixed integer programming (MIP) problem. Meanwhile, with a quadratic interpolation based active power control strategy, each PV can operate in a power dispatch mode and simultaneously estimate its maximum available power, which is an input to the MIP problem. Externally, the VPP can quickly adjust the aggregated power and achieve functions important to power systems with high penetration of distributed energy resources, such as primary frequency regulation. Simulation results validate the effectiveness of VPP in providing frequency support to an island microgrid.
Starting Page	921
Ending Page	928
Page Count	8
ISSN	17518687
Volume Number	9
e-ISSN	17518695
Issue Number	Issue 10, Jul (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/9/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.0392
Journal	IET Generation, Transmission & Distribution
Publisher Date	2015-06-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Controllable Loads Coordinated Control Method Distributed Energy Resources Distributed Power Generation Energy Storage System Integer Programming Interpolation Island Microgrid MIP Problem Mixed Integer Programming Problem Optimisation Technique Photovoltaic Power System Photovoltaic System Power And Energy Control Power Control Power Dispatch Mode Power Generation Control Power Generation Dispatch Power Grid Power Grid Security Power Grid Stability Power System Power System Control Power System Economics Power System Managemen Power System Operation Power System Security Power System Stability Primary Frequency Regulation Quadratic Interpolation Based Active Power Control Strategy Renewable Energy Source RESs Solar Energy Solar Power Stations Virtual Power Plant Control VPP
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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