Transmission Loss Calculation using A and B Loss Coefficients in Dynamic Economic Dispatch Problem
-
C. H. Ram Jethmalani
,
Poornima Dumpa
Abstract
This paper analyzes the performance of A-loss coefficients while evaluating transmission losses in a Dynamic Economic Dispatch (DED) Problem. The performance analysis is carried out by comparing the losses computed using nominal A loss coefficients and nominal B loss coefficients in reference with load flow solution obtained by standard Newton-Raphson (NR) method. Density based clustering method based on connected regions with sufficiently high density (DBSCAN) is employed in identifying the best regions of A and B loss coefficients. Based on the results obtained through cluster analysis, a novel approach in improving the accuracy of network loss calculation is proposed. Here, based on the change in per unit load values between the load intervals, loss coefficients are updated for calculating the transmission losses. The proposed algorithm is tested and validated on IEEE 6 bus system, IEEE 14 bus, system IEEE 30 bus system and IEEE 118 bus system. All simulations are carried out using SCILAB 5.4 (www.scilab.org) which is an open source software.
Nomenclature
Fuel Price of ith generating unit in tth hour.
Power generated by ith generating unit in tth hour.
Cost coefficients of ith generating unit.
Number of time intervals.
Number of generating units.
Power demand at tth hour.
Power loss at tth hour.
Minimum power that can be generated by ith generating unit.
Maximum power that can be generated by ith generating unit.
Ramp down limit of ith generator.
Ramp down limit of ith generator.
A loss coefficients.
Iteration number.
Transmission loss.
Transmission loss obtained by load flow solution.
Transmission loss obtained by A loss coefficients.
Transmission loss obtained by B loss coefficients.
Transmission loss obtained by loss coefficients.
Power demand at which A loss coefficients are calculated.
Error in transmission loss reported by A loss coefficients.
Error in transmission loss reported by B loss coefficients.
Relative error in transmission loss reported by A and B loss coefficients.
Slack power mismatch.
Slack Bus Power Correction.
Tolerance.
Per unit load at tth hour.
Average percentage error.
Incremental fuel cost (Lambda).
References
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Artikel in diesem Heft
- Frontmatter
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- A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids
- Simulation Test System of Non-Contact D-dot Voltage Transformer
- Development of V2G and G2V Power Profiles and Their Implications on Grid Under Varying Equilibrium of Aggregated Electric Vehicles
- Coordinated Action of Fast and Slow Reserves for Optimal Sequential and Dynamic Emergency Reserve Activation
- DG Planning with Amalgamation of Operational and Reliability Considerations
- The Optimized Operation of Gas Turbine Combined Heat and Power Units Oriented for the Grid-Connected Control
- Improved Differential Evolution for Combined Heat and Power Economic Dispatch
- Mitigation of Power Quality Problems in Grid-Interactive Distributed Generation System
- Optimal Operation and Management for Smart Grid Subsumed High Penetration of Renewable Energy, Electric Vehicle, and Battery Energy Storage System
- Techniques for a Wind Energy System Integration with an Islanded Microgrid
- Transmission Loss Calculation using A and B Loss Coefficients in Dynamic Economic Dispatch Problem
Artikel in diesem Heft
- Frontmatter
- Research Articles
- A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids
- Simulation Test System of Non-Contact D-dot Voltage Transformer
- Development of V2G and G2V Power Profiles and Their Implications on Grid Under Varying Equilibrium of Aggregated Electric Vehicles
- Coordinated Action of Fast and Slow Reserves for Optimal Sequential and Dynamic Emergency Reserve Activation
- DG Planning with Amalgamation of Operational and Reliability Considerations
- The Optimized Operation of Gas Turbine Combined Heat and Power Units Oriented for the Grid-Connected Control
- Improved Differential Evolution for Combined Heat and Power Economic Dispatch
- Mitigation of Power Quality Problems in Grid-Interactive Distributed Generation System
- Optimal Operation and Management for Smart Grid Subsumed High Penetration of Renewable Energy, Electric Vehicle, and Battery Energy Storage System
- Techniques for a Wind Energy System Integration with an Islanded Microgrid
- Transmission Loss Calculation using A and B Loss Coefficients in Dynamic Economic Dispatch Problem
