Informatics Publishing Limited

Mounica Andukury ¹, K. Sarada ²

Affiliations
1 K L University, Guntur - 522502, Andhra Pradesh, IN
2 Department of Electrical and Electronics Engineering, K L University, Guntur - 522502, Andhra Pradesh, IN

Abstract

Objective:Many methods have been proposed to evaluate the cost of transmission lines. The MW mile method is a kind embedded pricing method to find transmission cost. The proposed method considers the active power flow in the network and it is the first pricing strategy to consider the real network conditions and power flow in the network. MW mile method is also useful to cover the total transmission system fixed cost among all network users. The primary objective of this paper is to provide charges economically to the customers by considering not only the active power flow but also the power factor.Findings: The power flow values are calculated by using DC power flow and generalized load distribution factors are used to determine load contribution to line flows. Application/Improvements: This method is tested on IEEE 14 bus test system with considering all network parameters to fairly allocate cost to the end users.

Keywords

Cost Allocation, MW Mile Method, Power Factor, Transmission Pricing.

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S. K. B. Karishma ¹, J. Sreedevi ², P. Noor Cheshma ², K. Sarada ¹

Affiliations
1 Koneru Lakshmaiah University, Vaddeswaram, Guntur -522502, Andhra Pradesh, IN
2 Central Power Research Institute, Bangalore - 560 080, Karnataka, IN

Abstract

The use of voltage source converter (VSC) based HVDC transmission for the interconnection of various power networks is increasing day by day. However, VSCs susceptibility to DC faults, particularly the potential damage caused to the converter switches due to overcurrent, is an issue. The fault clearing must be done very rapidly, to limit the effect of the fault on neighboring networks. This paper analyses the two terminal behavior of a VSC- based HVDC system under DC fault condition. In this work, HVDC link is connected between the systems of two different frequencies. Simulations are carried out in RSCAD/RTDS^TM software and the performance of the system is analyzed for DC faults and the results are presented.

Keywords

Voltage source converter, VSC-HVDC, DC fault, DC voltage controller, AC voltage controller, (Neutral Point diode Clamped) NPC converter.

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