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This paper describes the objectives of the Working Group (WG) on Test Systems for Economic Analysis of Power Systems, and presents the current activities of the WG as well as the future plan.
This paper presents an efficient security assessment system for validating power system operation planning, which has been used in Henan provincial power grid in China. Daily operation planning is to schedule unit commitment and to dispatch generator output economically considering next day generators and transmission components' maintenance planning. The security assessment for validating the daily...
Security constrained optimal VAR despatch using 3500 bus Great Britain transmission planning models is investigated in this paper. The investigation demonstrates the value of applying practical reactive branch flow constraints to generator transformers in order to limit the pre-fault reactive utilization. This research also demonstrates that a multi-staged optimization approach can be used to remove...
The electricity generation sector is currently under strong pressure to curb emissions of greenhouse gases. To achieve this, targets on the amount of energy that needs to come from “green” power sources are being imposed around the world. In response to these targets, large amounts of wind power generation are being integrated and are likely to represent soon a significant share of the overall generation...
In real-time operations, online DSA applications can be used not only to perform security assessment for the current operating point but also to search boundaries of security region for operations staff to prepare for the next step generation dispatch and calculate transfer limits for market operations. This paper analyses the issues that were encountered when dealing with future re-configurations...
Security and economy are long standing underpinnings for power system operation. The evolution from regulated utility operation to competitive markets operation led to more formalized treatment of economy and security concerns through the deployment of market clearing applications that are based mathematical programming methods. Among the most common market clearing applications are security-constrained...
Security constrained unit commitment (SCUC) is one of the most important daily tasks that independent system operators (ISOs) or regional transmission organizations (RTOs) must accomplish in daily electric power market. Identifying the feasibility of the unit commitment state with security constraints is crucial for solving SCUC problems. If the feasibility of unit commitment state can be identified...
This paper proposes and efficient solution to the unit commitment (UC) schedule of a power system with wind generation including transmission limits. It does this by characterizing the residual demand feasibility set (loadability set) through a set of explicit linear inequalities. This set contains the residual demands that can be served by the available generation resources while also accounting...
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