دانلود رایگان مقاله انگلیسی, کنترل هماهنگ توان راکتیو بین شبکه های قدرت استانی و منطقه ای

Reactive Power Coordinated Control at the Gateway between Provincial and Regional Power Grids

سال انتشار : 2013

نوع مقاله : IEEE CONFERENCE PUBLICATION

تعداد صفحات : 6

Abstract—It is the key problem in automatic voltage control of

large-scale power grids to quantitatively assess the reactive

power regulation capability of provincial power grid to

determine the control range of reactive power between

provincial and regional power grids. Based on the concept of

layered decoupling, firstly the definition of average coordination

power factor limits (ACPFL) is given to evaluate the reactive

power limit of provincial power grid, and the optimized

mathematical model of ACPFL is solved to obtain the

correlation curve between ACPFL and load level transmitted

from provincial power grid to subordinate power networks;

then according to the differences among loads of 500kV

substations, the approximate linearization calculation of limit

value of the upstream gateway coordinated power factor is

performed, and taking it as the constraint a calculation model

and fast estimation method for the limit value of downstream

gateway coordinated power factor are established to implement

dynamic setting of parameters of AVC system; finally a method

to implement the AVC system based reactive power coordinated

control at the gateway between provincial and regional power

grids is given. Simulation results of applying the proposed

method to a certain regional power grid in Guangdong power

grid show that the proposed method is favorable for energysaving

and loss-reduction, improving voltage quality, enhancing

security margin of voltage and reactive power in provincial

power grid and bringing the potential of area substation

capacity into play.

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