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Line-Commutated Converter (LCC) based HVDC lines are widely used to transmit electric power and interconnect asynchronous AC systems. Due to the characteristic of LCC-based HVDC, large amount of reactive power consumed by HVDC potentially deteriorates system voltage stability. Reactive power control is crucial to alleviate adverse impacts of HVDC reactive power consumption from AC network and secure...
By analyzing the principles of One-Cycle Control (OCC) and PWM bridge rectifier circuit, OCC is applied to bridge rectifier circuit and a control strategy of bridge rectifier employing OCC is proposed. Taking the unit power factor as the control objective, the relationship between the duty ratio of IGBT and control voltage is deduced. In order to adapt the time-varying of output voltage error and...
In this paper, an approach to determine the value-added benefits of distributed generation (DGs) on the performance of power system is proposed. It utilizes a robust optimization technique to compute marginal price contributions of distributed generation (DGs) in a typical power system network. An approach that is based on optimal power flow has been shown. It also features incorporating DG as constraints...
The locational marginal prices (LMPs) for real and reactive power is calculated with the framework of full AC optimal power flow (OPF). The production cost of reactive power from various generation sources including generators and reactive compensators was integrated in the objective function with operation constraints. Interior point method combined branch and bound was employed to solve the OPF...
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