Reactive power coordinated optimisation method with renewable distributed generation based on improved harmony search

The reactive power coordinated optimisation problem for distribution network (DN) with the integration of renewable distributed generation (DG) is investigated in this study. By actively participating in reactive power control together with an under-load tap changer and shunt capacitors, DG can oper...

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Bibliographic Details
Published in:IET generation, transmission & distribution Vol. 10; no. 13; pp. 3152 - 3162
Main Authors: Sheng, Wanxing, Liu, Ke-yan, Liu, Yongmei, Ye, Xueshun, He, Kaiyuan
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 06.10.2016
Subjects:
active power loss minimisation
continuous variable
Devices
Distributed generation
distributed power generation
distribution network
Electric potential
grid voltage
harmony search
heuristic searching method
integer programming
integer variable
Mathematical models
MINLP problem
mixed integer nonlinear programming problem
nondispatchable DG
nonlinear programming
Optimization
power capacitors
power distribution control
power generation control
power grids
Reactive power
reactive power adjustment
reactive power control
reactive power coordinated optimisation method
renewable distributed generation
renewable energy sources
search problems
Searching
shunt capacitor
Shunt capacitors
switching device number decrement
under‐load tap changer
variable combination
voltage 10 kV
power distribution control
reactive power adjustment
integer programming
nonlinear programming
voltage 10 kV
grid voltage
power generation control
heuristic searching method
DN
distributed power generation
mixed integer nonlinear programming problem
MINLP problem
integer variable
renewable distributed generation
power grids
search problems
power capacitors
nondispatchable DG
renewable energy sources
active power loss minimisation
harmony search
continuous variable
under-load tap changer
reactive power coordinated optimisation method
shunt capacitor
switching device number decrement
distribution network
reactive power control
variable combination
ISSN:1751-8687, 1751-8695
Online Access:Get full text
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Summary:The reactive power coordinated optimisation problem for distribution network (DN) with the integration of renewable distributed generation (DG) is investigated in this study. By actively participating in reactive power control together with an under-load tap changer and shunt capacitors, DG can operate more effectively in the DN. Non-dispatchable DG is considered in the coordinated optimisation method. The objective of the proposed reactive power coordinated optimisation method is to minimise active power loss and to decrease the number of switching device operations while maintaining the grid voltage within the allowable range. The optimisation problem is to solve a variable combination including integers and continuous variables, which will formulate a mixed integer non-linear programming (MINLP) problem. The control variable includes operations of traditional reactive power control devices and the reactive power adjustments of DGs. To solve the MINLP problem, a heuristic searching method, an improved harmony search algorithm is proposed with adaptive parameters process. Numerical tests on a standard 10-kV distribution system and a real distribution system demonstrate the applicability of the proposed reactive power coordinated optimisation method.
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ISSN:1751-8687
1751-8695
DOI:10.1049/iet-gtd.2015.1051