Real time loss sensitivity calculation in power systems operation

Network losses are being considered in the standard market design. The calculation of loss sensitivity that is based on the distributed generator slack is commonly used for economic dispatch in energy control center. In order to obtain the accurate location-based marginal prices, an efficient and robust method to calculate loss sensitivity for an arbitrary slack bus within the real-time period (1-10 min) is needed in the real-time energy markets. This paper presents a fast and useful approach to calculate loss sensitivity for any slack bus. This method is based on the results taken from the distributed slack buses without repeating a traditional power flow analysis. The proposed approach is tested and verified.