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首页> 外文会议>Conseil International des Grands Reseaux Electriques;International Council on Large Electric Systems;CIGRE session >Integrating Variable Energy Resources into the California Energy Market
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Integrating Variable Energy Resources into the California Energy Market

机译：将可变能源整合到加利福尼亚能源市场

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Under California’s Renewables Portfolio Standard (RPS), utilities must supply 20 percent of all retailelectricity sales from eligible renewable resources by 2010 or shortly thereafter, and 33 percent by theyear 2020 and beyond. It is expected that much of the additional renewable generation to meet theRPS goals will come from variable energy resources (VERs) such as wind and solar technologies. TheCalifornia Independent System Operator Corporation (CAISO) is responsible for ensuring that thebulk electric system is able to operate reliably with the additional VERs. This paper discusses themajor findings of two studies that assessed the operational and market impacts of 20 percent RPS and33 percent RPS, as well as possible changes to wholesale market and operational procedures to ensurethat the system can perform as needed under these conditions.The studies demonstrated the shortage of the load-following capability in the downward directionwhen resources are self-scheduled. Hence, a recommendation is that CAISO pursue incentives toreduce the level of self-scheduled resources and/or increase the operating flexibility of dispatchableresources. Another recommendation is for CAISO to explore incentives intended to encourage greaterparticipation by wind and solar resources in the economic dispatch. The studies showed that frequencyregulation requirements vary substantially from hour to hour depending on the expected productionfrom wind and solar resources. The studies recommended that the CAISO forecast operational rampsand load-following requirements and explore the possibility of modifying unit commitment algorithmsto reflect the forecasted ramp requirements. Finally, the studies recommended the investigation of thesufficiency of the existing market in meeting the revenue requirements of conventional generators.Based on these recommendations, the CAISO has developed a market vision to identify marketenhancements necessary to integrate large amounts of VERs. The short-term roadmap is focused onmarket and operational enhancements include changes such as, providing incentives and opportunitiesfor resources to be more responsive and flexible, adjusting existing market rules to incent greaterresource flexibility, and enhancing ISO operators’ ability to better manage and commit resources.Some of the mid-term market enhancements include the creation of a flexi-ramp product andimprovements to the pricing and settlement of intertie bids and schedules. The long-term roadmapincludes a much more comprehensive set of enhancements to the ISO markets, such as, implementinga 15-minute real-time market and creating a new real-time imbalance service product.
机译：根据加利福尼亚州的可再生能源投资组合标准（RPS），公用事业必须提供全部零售的20％ 到2010年或此后不久，来自符合条件的可再生资源的电力销售，到2010年达到33％ 2020年及以后。预计许多额外的可再生能源发电将满足 RPS目标将来自可变能源（VERs），例如风能和太阳能技术。这 加利福尼亚独立系统运营商公司（CAISO）负责确保 大容量电气系统能够与其他VER一起可靠运行。本文讨论了 两项研究的主要发现，评估了20％RPS的运营和市场影响，以及 RPS为33％，并可能对批发市场和运营程序进行更改，以确保 系统可以在这些条件下根据需要执行。 研究表明，向下的负荷跟踪能力不足 资源是自调度的。因此，建议CAISO寻求激励措施以 减少自调度资源的级别和/或增加可调度资源的操作灵活性 资源。 CAISO的另一项建议是探索旨在鼓励更大范围的激励措施。 风能和太阳能资源参与经济调度。研究表明 监管要求在每小时之间会有很大的不同，具体取决于预期的产量 来自风能和太阳能资源。研究建议CAISO预测运营坡度 和负载跟踪要求，并探索修改单元承诺算法的可能性 以反映预测的坡道需求。最后，研究建议对 现有市场足够满足常规发电机的收入要求。 基于这些建议，CAISO已制定了市场愿景以识别市场 集成大量VER所需的增强功能。短期路线图的重点是 市场和运营方面的改进包括变化，例如提供激励和机会 使资源更灵敏，更灵活，调整现有市场规则以激发更大的利益 资源灵活性，并增强ISO运营商更好地管理和分配资源的能力。 中期市场的一些改进包括创建弹性坡道产品和 改善相互竞标和进度表的定价和结算。长期路线图 包括对ISO市场的更为全面的增强，例如实施 15分钟的实时市场，并创建新的实时失衡服务产品。

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