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Defining and evaluating operational equilibriums in real-time market, constrained by operation risks and economical biddings, is in the center of market operation and its enhancement. For example, in the two-settlement market design, reliability unit commitment is an important stage to bridge day-ahead market with Real-time system operation, which commits additional units to cover forecasted load...
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.
The paper focuses on reliability assessment of power systems with wind power generation. A Monte Carlo based production cost simulation model is introduced in the paper. The model closely simulates actual system operation processes and takes system random behaviors into account. A simplified unit commitment method is created to fit the simulation for reliability evaluation purpose. The effects of...
High penetration of wind power has posed great challenges to power system operators. Extensive research has been done aiming to improve the power system operations. Various mechanisms such as stochastic unit commitment and reserve calculation methods have been proposed. However, the power system operators may have different views on the research results due to practical constraints. This paper looks...
The inherent variability of wind generation may 1) increase the operating costs of the conventional generators used to follow the net load not supplied by wind capacity (i.e. due to additional ramping costs), and 2) increase the amount of reserve conventional generating capacity needed to maintain Operating Reliability. For customers, the higher operating costs for conventional generators caused by...
Both deterministic and probabilistic approaches can be used to establish spinning reserve requirements. It has been proved that determining reserve requirements based on probabilistic approaches results in more economical efficiency. So, a probabilistic security constraint unit commitment problem (SCUC) is used to clear energy and spinning reserve simultaneously and to determine system spinning reserve...
This paper attempts to address the issues of integrating wind generations with bulk power system while maintaining the efficiency and reliability of system operation. The stochastic output of wind generations increases the difficulty of balance total supply and load in a timely manner, and violates the system reliability indices such as EENS and LOLP. An efficient mean is to increase the operating...
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