Lambda optimization of constraint violating units in short-term thermal unit commitment using modified dynamic programming

Authors

LOGAVANI KANDASAMY
SENTHIL KUMAR SELVARAJ

DOI

10.3906/elk-1409-16

Abstract

This paper presents a new approach with a three-stage optimization algorithm for the least-cost optimal solution of the unit commitment problem. In the proposed work, the optimal schedule is obtained by optimizing the lambda operator for the states that violate the inequality constraints. The objective of the work is to minimize the fuel cost when subjected to various constraints such as load balance, minimum up/down time, ramp limit, and spinning reserve. This method of committing the units yields the least-cost solution when applied to the IEEE 10-unit systems and 7-unit Indian utility practical systems scheduled for 24 h and the results obtained are compared with the existing methods.

Keywords

Dynamic programming, economic dispatch, lambda optimization, unit commitment

First Page

1311

Last Page

1325

Recommended Citation

KANDASAMY, LOGAVANI and SELVARAJ, SENTHIL KUMAR (2017) "Lambda optimization of constraint violating units in short-term thermal unit commitment using modified dynamic programming," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 25: No. 2, Article 52. https://doi.org/10.3906/elk-1409-16
Available at: https://journals.tubitak.gov.tr/elektrik/vol25/iss2/52