市场环境下考虑省内和省间交易的省级电网输电断面价值评估方法

Value evaluation method of provincial grid transmission section considering intraprovincial and inter-provincial transactions under the market environment

中文关键词: 电力现货交易  输电断面  市场价值评估  扩容建设  博弈行为

英文关键词: electricity spot transactions  transmission section  market value evaluation  expansion construction  gaming behavior

中文摘要:

      随着电力市场化改革的推进，省内与省间电力交易的快速发展对输电断面规划提出了更高要求，传统模式忽略了市场博弈行为的复杂性，难以准确反映输电投资的经济价值。基于此，提出了一种考虑省内和省间电力现货交易的输电断面价值评估方法。通过构建省间均衡约束模型和省内集中出清模型，综合考虑市场出清规则和价格信号，评估断面扩容的市场价值。基于江苏电网拓扑结构的算例分析表明，省间断面容量不足容易导致价格波动加剧和市场失灵，通过扩容建设可以有效缓解市场问题并促进合理竞价，同时省内断面价值评估显示市场价值指标能显著提高资源配置效率，合理调整扩容收益分配系数和投资比例可以优化电网公司在不同能源结构下的投资决策。

英文摘要:

      With the advancement of electricity market reforms, the rapid development of intra-provincial and inter-provincial electricity transactions has placed higher demands on transmission section planning. Traditional models often overlook the complexity of market gaming behavior, making it difficult to accurately reflect the economic value of transmission investments. In response, a method for evaluating the value of transmission sections is proposed, considering both intra-provincial and inter-provincial electricity spot market transactions.By constructing an inter-provincial equilibrium constraint model and an intra-provincial centralized clearing model, the method comprehensively accounts for market clearing rules and price signals to assess the market value of transmission expansion. A case study based on the Jiangsu power grid topology shows that insufficient inter-provincial transmission capacity can lead to increased price volatility and market failures. Transmission expansion effectively mitigates these issues and promotes rational bidding, while the evaluation of intra-provincial sections demonstrates that market value indicators can significantly enhance resource allocation efficiency. Adjusting the expansion revenue distribution coefficient and investment ratio can further optimize grid companies’investment decisions across different energy structures.