NDLI: Optimal inverter based distributed generation units control strategy to improve voltage profiles in unbalanced distribution networks

Content Provider	IET Digital Library
Author	Wang, Tianjian Meskin, Matin Su, Xiangjing Grinberg, Ilya Wang, Zhijun
Abstract	Recently, the penetration of distributed generation (DG) at distribution level has grown significantly. Unfortunately, this has brought some unexpected power quality problems such as voltage unbalance. To reduce the voltage quality problems deteriorated by unbalanced features, a transformed multi-objective optimal power flow (OPF) model is built to optimise the active and reactive power outputs of three-phase micro-turbine generator units. A stricter measurement of voltage unbalance definition is employed which can replace the traditional voltage unbalance definition since it is able to hugely increase the computing efficiency. Another constraint model is also proposed considering the zero sequence effects for three phases and four wire parts of the whole system. The performance of the presented OPF models with different constraints has been evaluated by the IEEE 13-node and 123-node test cases. These simulation results demonstrate that by the proposed OPF objective function, the new combination of constraints could be exploited to achieve better network performance.
Starting Page	4910
Ending Page	4921
Page Count	12
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 21, Nov (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/21
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0103
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-08-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	123-node Test Cases Active Power Outputs Constraint Model Control of Electric Power System Distributed Generation Units Distributed Power Generation Distribution Level Distribution Network Invertors Load Flow Multiobjective Optimal Power Flow Model Network Performance OPF Objective Function Optimal Inverter Optimisation Optimisation Technique Power Supply Quality Power System Control Power System Economics Power System Managemen Power System Operation Power System Security Power System Stability Presented OPF Model Reactive Power Output Three-phase Microturbine Generator Units Traditional Voltage Unbalanced Distribution Network Unbalanced Feature Unexpected Power Quality Problem Voltage Profile Voltage Quality Problem Voltage Unbalance Zero Sequence Effect
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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