1.The College of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
2.China Construction Second Engineering Bureau Limited, Beijing 101149, China
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文章历史+
Received
Published
2024-11-18
2026-01-20
Issue Date
2026-05-13
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摘要
抽水蓄能作为电力系统中最为成熟的新能源储能技术,凭借其能调节电网负荷、平衡电力波动及提升系统稳定性的独特优势,已成为实现中国“双碳”目标的重要路径之一。因此,对抽水蓄能电站综合效益进行科学评估,是项目决策及政策制定中至关重要的一环。为此,本文提出一种基于博弈论组合赋权‒云模型的综合效益评价模型。首先,运用社会网络分析法(SNA)筛选关键评价指标,构建包含财务评价、国民经济评价、技术效益、动态效益、静态效益、电网效益、综合可持续性效益和社会效益8个1级指标及其下属30个2级指标的评价指标体系。其次,采用序关系分析(G1)法和CRITIC(criteria importance through intercriteria correlation)法相结合的方式,对各评价指标进行主观与客观权重赋值。通过引入博弈论组合赋权方法,进一步优化各指标的权重分配。最终,基于云模型构建综合效益评价模型。利用博弈论组合赋权‒云模型对紫云山抽水蓄能电站进行实例分析,结果表明,该电站的综合效益评估等级为“好”,与实际情况相符,充分验证了所构建模型的有效性与准确性。该研究不仅为抽水蓄能电站的综合效益评估提供了科学的评估框架,并为类似项目的决策和实施提供了理论支持和实践依据。
Abstract
Objective The comprehensive evaluation of pumped storage power plants is of critical importance for ensuring that these systems, which play a pivotal role in grid regulation, renewable energy integration, and the achievement of national carbon reduction targets, are operating optimally. In practice, however, evaluation processes often suffer from incomplete indicator systems, imbalanced subjective and objective weight assignments, and a lack of robust methodologies capable of adequately reflecting uncertainties and fuzziness in complex systems. Therefore, the present study proposes a novel comprehensive benefit evaluation method for pumped storage power plants, which integrates game theory-based combined weighting with cloud model theory. The objective is to develop a systematic, objective, and adaptable evaluation framework that provides scientific support for decision-making and operational optimization in pumped storage power plants. Methods Firstly, based on an extensive literature review, this study employed social network analysis (SNA) to screen the key indicators required for the comprehensive benefit evaluation of pumped storage power plants. Through centrality analysis, it removed redundant indicators. It merged overlapping concepts, which ultimately formed an evaluation indicator system comprising eight primary categories (financial evaluation, national economic evaluation, technical benefits, dynamic benefits, static benefits, grid benefits, comprehensive sustainability, and social benefits) and 30 corresponding secondary indicators. Secondly, it used a nine-level linguistic operator to quantify the relative importance of adjacent indicators, and it applied a recursive formula to compute subjective weights. The CRITIC method quantified indicator variability and conflict by calculating the standard deviation and correlation coefficient, generating objective weights. Then, game theory integrated and optimized the two sets of weights by constructing an objective function that minimized the deviation between subjective and objective weights. The optimal combination coefficient was then determined to achieve a dynamic balance in weight allocation. Finally, a comprehensive benefit evaluation model was developed based on cloud model theory. Expert rating data for each indicator were first normalized, and an inverse cloud generator computed the cloud numerical characteristics (expectation Ex, entropy En, and hyper-entropy He) to capture the inherent uncertainty of the data. Then, using the predetermined combination weights of secondary indicators, the cloud numerical characteristics of primary indicators, and the overall evaluation were synthesized step by step. A forward cloud generator in Matlab generated a comprehensive benefit cloud map, and the effectiveness level was determined through spatial matching and the maximum closeness criterion. In addition, a case study on the Ziyunshan pumped storage power plant was conducted to validate the practical applicability of the proposed model. Results and Discussions The evaluation results of the comprehensive benefits of the Ziyunshan pumped storage power plant showed that its overall evaluation cloud diagram (Ex=7.026 0, En=0.749 4, He=0.271 6) closely aligned with the standard cloud diagram for “good overall benefits” (Ex=7.000 0, En=0.670 0, He=0.300 0), verifying the effectiveness of the constructed model. The analysis of key indicators revealed that the peak shaving and valley filling coal-saving benefit (Ex = 8.400 0) fell within the good range, with an estimated annual reduction of 411 000 tons of coal consumption for thermal power generation, which verified the pumped storage power plants' pivotal role in load balancing and carbon reduction. The black start capability (Ex = 7.600 0) fell within the good benefit range, with an actual response time 75% shorter than that of conventional thermal power plants, which highlighted its technical advantage in enhancing grid resilience. However, the annual start-up frequency (Ex = 5.600 0) reached only 68% of its designed value, reflecting the inadequate adaptability of dispatch strategies to load fluctuations. In terms of financial and economic evaluation, the loan repayment period (Ex = 5.600 0) and asset-liability ratio (Ex = 5.000 0) corresponded to a repayment term of 15 years and a high debt ratio of 65%, revealing long-term debt repayment pressure and capital structure risks. Regarding comprehensive sustainability benefits, the expectation values of environmental indicators, such as impacts on water quality, noise, and air, were all below 6.0, classifying them in the average benefit range. Although the construction wastewater reuse rate reached 85%, the suspended sediment concentration in the reservoir area remained as high as 0.318 kg/m³, and noise levels in sensitive areas exceeded the standard by 10 dB, indicating the need for further optimization of environmental management measures. These results indicated that although pumped storage power plants demonstrated significant operational benefits, continuous improvements in environmental management measures were still required to comply with stricter environmental regulations. Conclusions The study concludes that the proposed evaluation method, which integrates game theory-based combined weighting with cloud model analysis, provides a scientifically rigorous and robust framework for assessing the comprehensive benefits of pumped storage power plants. Its successful application to the Ziyunshan pumped storage power plant case study confirmed that the evaluation results closely align with actual operational performance, validating the effectiveness and reliability of the approach. Accordingly, the integration of advanced weighting techniques with fuzzy quantitative modeling enhances the objectivity of the evaluation and provides meaningful insights for identifying key areas for improvement. These findings indicate that the method has significant potential for broader application in evaluating energy storage systems and other complex engineering projects, ultimately contributing to more informed decision-making and improved operational efficiency.
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