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首页> 外文期刊>European transactions on electrical power engineering >The investigation of the optimization based on market mechanism to the operation of a thermal-wind-photovoltaic hybrid generation system
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The investigation of the optimization based on market mechanism to the operation of a thermal-wind-photovoltaic hybrid generation system

机译：基于市场机制对热风 - 光伏混合生成系统运行的优化研究

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摘要

The renewable energy hybrid generation system in the area with renewable energy and land source plays a key role in improving the application of the renewable energy in China, with the rapid development of the extra high voltage (EHV) and ultra-high voltage (UHV) grids to transmit the electricity. The suitable plan and decision-making mechanism has a significant influence on the utilization of the renewable energy. The output of thermal power, wind power and photovoltaic are respectively simulated in the plan period of a hybrid generation system, and then all the output are comprehensively studied with the consideration of some constrains. However, the experience of the applications of the renewable energy hybrid generation system with thermal power revealed an obvious disadvantage that to maintain the competitiveness of the power output without the guidance of the price signals in the electricity market is difficult. The dispersed areal distribution and discontinuous power output of the renewable energy may be responsible for this disadvantage. The investigation to improve the consumption of the renewable energy hybrid generation system is meaningful to solve the renewable energy curtailment problems. In the present study, the investigation to the operation of a thermal-wind-photovoltaic hybrid generation system with market mechanism was conducted to optimize the consumption of the renewable energy. The raise of the predicted error leads to the rapid increase of the peaking regulation and the decrease of the full load time, the improvement of the predicted error also leads to the suppression of the renewable energy curtailment, while the increase of the smoothness of the declared power curve leads to the decrease of the peaking regulation and the full load time. The renewable energy curtailment was significantly suppressed with the decrease of the power of the EHV grid and the number of the thermal unit, while the regional gird should be sometimes applied to meet the demand of the grid capacity when the number of the thermal unit reduced. These results are beneficial to the operations of the similar hybrid generation systems.
机译：该地区的可再生能源混合生成系统具有可再生能源和土地来源在提高中国可再生能源的应用方面发挥着关键作用，随着超高电压（EHV）和超高压（UHV）的快速发展网格传递电力。合适的计划和决策机制对利用可再生能源有重大影响。在混合生成系统的平面期间分别模拟了热功率，风力和光伏的输出，然后通过考虑一些约束来综合研究所有输出。然而，具有热力的可再生能量混合生成系统的应用的经验揭示了一种明显的缺点，即在没有电力市场中的价格信号的指导的情况下保持电力输出的竞争力。可再生能源的分散的面积分布和不连续的功率输出可能负责这种缺点。改善可再生能源混合生成系统消费的调查有意义，可以解决可再生能源缩减问题。在本研究中，对具有市场机制的热风光杂交发电系统进行调查，以优化可再生能源的消耗。预测误差的提高导致峰值调节的快速增加和满载时间的减少，预测误差的改进也导致抑制可再生能源缩减，而宣称的平滑度的增加功率曲线导致峰值调节的减少和满载时间。随着EHV电网的功率和热单元的数量的降低，可再生能源缩减显着抑制了，而区域曲线有时应适用于当热量单位的数量减少时满足网格容量的需求。这些结果有利于类似混合生成系统的操作。

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