A Transmission Pricing Mechanism Based on Power Tracing for Central Transmission Utility in India

In India, apart from state owned generators, a central sector power pool has been created consisting of central sector power stations. The Central Transmission Utility (CTU) has built an EHV network to transfer this power to the constituents of the regional network. To recover the costs incurred, the CTU levies the Transmission Service Charges (TSC) over the constituents. The constituents are billed for network usage charges which are proportional to their allocated share in the central sector power generation. An ideal pricing mechanism would have been to find out the usage of the network by the constituents and charge accordingly. In this paper, a real power tracing based method for recovery of Transmission Service Charge (TSC) from the constituents of Western regional grid in India is proposed. The method uses proportionality based real power tracing to find out the network usage by various constituents. Loss allocation on EHV network to the various constituents is also done. Actual data of power flows over the EHV network of Western regional grid for one day is considered.

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A Transmission Pricing Mechanism Based on Power Tracing for Central Transmission Utility in India

ENERGYO ◽

10.1515/energyo.0034.00188 ◽

2018 ◽

Author(s):

A. R. Abhyankar ◽

S. A. Khaparde ◽

S. A. Soman ◽

P. Pentayya

Keyword(s):

Transmission Pricing ◽

Pricing Mechanism ◽

Power Tracing

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Real Power Tracing: An Optimization Approach

International Journal of Emerging Electric Power Systems ◽

10.2202/1553-779x.1088 ◽

2005 ◽

Vol 3 (2) ◽

Cited By ~ 2

Author(s):

A. R Abhyankar ◽

S. A Soman ◽

S. A Khaparde

Keyword(s):

Network Flow ◽

Optimization Approach ◽

Real Power ◽

Loss Allocation ◽

Optimization Formulation ◽

Tracing Algorithm ◽

Constraint Modeling ◽

Network Flow Optimization ◽

Audit Information ◽

Power Tracing

Most tracing algorithms have used variants of proportionality based tracing algorithm. However, proportional sharing is not an inherent characteristic of the system. It is a rule enforced to arrive at a solution in a simple and fair manner. We propose a multi-commodity network flow optimization approach for optimal tracing of power flows. The resulting optimization formulation is shown to be sparse linear programming (LP) problem. The paper is devoted to the constraint modeling of this optimization approach. A unified formulation that models lossy MW flow network and provides consistent results for generation and load tracing is presented. Optimal tracing provides complete power audit information like share of loads in generation, generators' contribution in loads, loss allocation to generators and loads, and decomposition of branch flows into generation and load components. Illustrative examples and results on IEEE 30 bus system show the workability of the proposed approach.

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Effect of Real Power Loss Allocation on the Transfer Bus with Zero Injection Power

International Journal of Science and Engineering Invention ◽

10.23958/ijsei/vol02-i09/04 ◽

2016 ◽

Vol 2 (09) ◽

Author(s):

Ganiyu Adedayo Ajenikoko ◽

Olayinka Titilola T

Keyword(s):

Electricity Market ◽

Power Loss ◽

Power Flow ◽

Power Transmission ◽

Electrical Power ◽

The Other ◽

Allocation Model ◽

Real Power ◽

Loss Allocation ◽

Injection Power

Loss allocation in electrical power transmission system has a significant role to play in the restructuring of electricity market since generator and demands are connected to the same network. There is the need for an efficient loss allocation scheme that could fit all market structures in different locations. This paper presents the effect of real power loss allocation on the transfer bus with zero injection power. Three approaches- the postage stamp method (PS), proportional sharing principle (PSP) or flow tracing method and the Bus-wise loss allocation (BWLA) method were compared using appropriate mathematical notations for the development of a Hybridized real power loss allocation model. The average values of the losses with the three methods â€“PS, PSP and BWLA were computed to obtain the hybridized real power loss allocation model. The effect of real power loss allocation on the transfer bus with zero injection power is then established. The results of the work show that in PSB method, a loss of 3.0751MW was allocated to bus 1 as it contributes 142.608MW to other loads with the allocation of 1.8523MW to bus 2 with the contribution of 55MW to the other loads. In BWLA method a loss of 3.1412MW was allocated to bus 1 with its contribution of power flow to the other loads as 146.908MW while allocating a loss of 1.2381MW to bus 2 with its contribution of power flow to other loads as 58MW. In the PS method, the participants with more contributions get more benefits compared to participants with lesser contributions. Though, network is taken into consideration in PSB, customers have no reasonable benefits as compared to the BWLA method compared to the other two approaches. The total real power loss of 25.18MW for the 30 bus system was obtained by using PS. PSP and BWLA method. All the three methods, PS, PSB and BWLA allot zero loss to the transfer bus which has zero injection power. In PSB method, negative losses ( counter-flows) occur when number of buses increases and in BWLA method, negative losses (counter flows) never occur even though there is an increase in the number of buses.

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