Abstract
The high penetration of distributed energy resources (DERs) will significantly challenge the power system operation and control due to their stochastic, intermittent, and fluctuation characteristics. This enhances the difficulty of congestion management of power systems in cross-border electricity market among different regions. For handling this, the Real-Time Market is proposed for balancing capacity trading against congestions. Several strategies for Real-Time Market dealing with congestions are proposed. The strategy of two-stage crossborder markets in Day-ahead, Intra-day and Real Time Market are introduced with the congestion constraints complied. Pre-Contingency strategy is proposed as the advance preparation for the future congestion, and In-Day redispatch is used for regulation. Accordingly, the requirements on facilities considering telemetry and remote control in a fast manner are discussed at last.
Highlights
Heavy use of the electricity grid produces congestion, a situation in which the lowest-priced electricity can’t flow freely to a specific area
Two-Stage Crossborder Markets Strategy In order to manage the congestion and pricing at the crossborder of the areas, two major strategies are adopted, one is minimum of Net Transfer Capacity (NTC), another is maximum of Available Transfer Capacity (ATC)
This paper focuses on the strategies for congestion management of Real-Time Electricity Market
Summary
Heavy use of the electricity grid produces congestion, a situation in which the lowest-priced electricity can’t flow freely to a specific area. Locational Marginal Prices (LMPs) are higher on the receiving end of the congestion and lower on the sending end. Operating conditions such as fluctuating generations, intermittent great energy consumptions and transmission outages can cause congestion and result in electricity price changes [1,2]. By the end of 2012, wind power accounted for roughly 3.4% of installed capacity supply, which provided 12,634 GWh of annual energy in American [9]. The U.S runs a Real-Time Electricity Market where electricity price cleared in 5 minute intervals [11]. Firstly analyzes the successful experience for congestion management in Nord Pool and PJM in U.S several strategies for Real-Time Market dealing with congestions are proposed, including market strategies, constraints and operating strategies
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