Energy delivery capacity and generation scheduling in the deregulated electric power market

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-16 DOI:10.1109/PICA.1999.779381

X. Guan, F. Gao, A. Svoboda

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引用次数: 45

Abstract

The generation schedules obtained in traditional hydrothermal scheduling or unit commitment programs are in hourly generation levels. In the new deregulated power market, the power transactions are processed in terms of hourly energy delivery. Failing to fulfil scheduled energy delivery may result in a penalty to power producers. This paper shows that although ramp-rate constraints are satisfied in hydrothermal scheduling, taking a generation level schedule as an energy delivery schedule may not be realizable. Based on the maximum principle in optimal control theory, the energy delivery capacity across the scheduling horizon is established as a set of recursive equations with given ramp-rate constraints. A sufficient and necessary condition is obtained to check if an energy delivery schedule is realizable. Based on this condition, two cases, where ramp-rate constraints are both satisfied, are analyzed and an unrealizable energy delivery schedule is observed.

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解除管制的电力市场中的能源输送能力和发电计划

传统的热液调度或机组承诺方案所得到的发电计划都是以小时发电水平为单位的。在解除管制的新电力市场，电力交易以每小时供电量计算。未能完成预定的能源交付可能导致对电力生产商的处罚。研究表明，热液调度虽然满足斜坡率约束，但以发电水平调度作为能量输送调度可能无法实现。基于最优控制理论中的最大值原理，在给定斜坡率约束下，建立了跨调度水平的能量输送能力递归方程。得到了检验能源输送计划能否实现的充分必要条件。在此基础上，分析了两种同时满足斜坡率约束的情况，并观察到一种无法实现的能源输送计划。

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Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)

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