共查询到19条相似文献,搜索用时 203 毫秒
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运用微观经济学理论研究了Power Pool模式中发电公司的竞价问题。首先,通过对寡头市场的均衡分析指出,Power Pool模式中发电公司采取策略性报价是寡头企业长期均衡的必然结果。其次.运用供给函数均衡分析指出,发电公司的优化报价策略是报价高于边际成本,发电公司的优化报价曲线经过发电公司面对其自身剩余需求曲线单独决策时的最优化点,市场的统一清除价必定等于发电公司面对其自身剩余需求曲线单独决策时的最优化点的价格,市场均衡解存在且惟一。最后,探讨了均衡解与市场力之间的关系,并通过分析差价合约对均衡解的影响发现差价合约可降低电力公司的市场力。 相似文献
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运用微观经济学理论研究了Power Pool模式中发电公司的竞价问题。首先,通过对寡头市场的均衡分析指出,Power Pool模式中发电公司采取策略性报价是寡头企业长期均衡的必然结果。其次,运用供给函数均衡分析指出,发电公司的优化报价策略是报价高于边际成本,发电公司的优化报价曲线经过发电公司面对其自身剩余需求曲线单独决策时的最优化点,市场的统一清除价必定等于发电公司面对其自身剩余需求曲线单独决策时的最优化点的价格,市场均衡解存在且惟一。最后,探讨了均衡解与市场力之间的关系,并通过分析差价合约对均衡解的影响发现差价合约可降低电力公司的市场力。 相似文献
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电力市场是一个不完全竞争的寡头垄断市场,研究竞价策略对发电商非常重要.市场中的独立发电商往往会采用合理的竞价策略来获得最大收益.该文根据联营模式下电力市场的特点,利用供给函数模型来模拟发电商的策略行为,给出了市场均衡解.此外,还分析了分段报价、需求弹性等因素对发电商均衡策略的影响.仿真算例说明了该方法的合理性和可操作性. 相似文献
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电力市场是一个不完全竞争的寡头垄断市场,研究竞价策略对发电商非常重要。市场中的独立发电商往往会采用合理的竞价策略来获得最大收益。该文根据联营模式下电力市场的特点,利用供给函数模型来模拟发电商的策略行为,给出了市场均衡解。此外,还分析了分段报价、需求弹性等因素对发电商均衡策略的影响。仿真算例说明了该方法的合理性和可操作性。 相似文献
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在电力市场环境下,市场竞争带来的潮流运行方式的随机性、多变性和不可预测性与输电网的潮流约束、安全约束相互矛盾而又同时存在,从需求侧角度考虑,针对Pool模式电力市场中需求侧各购电成员之间利润分配的非合作博弈均衡问题,提出了多个需求侧购电成员如何优化自己的购电竞价策略而使所有购电者均达到收益最大化的2层优化模型,考虑了电力网络约束对购电成员收益的影响,针对此均衡约束数学规划问题提出了一种求解多个需求侧购电成员处于纳什均衡点的最优策略解析方法,同时还提供了从备选策略集合中找到纯纳什均衡解的方法,在此基础上,以IEEE 30节点系统为例说明需求侧采用购电策略报价对发电商收益、需求侧各自收益及对电力市场运行的影响. 相似文献
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利用机制设计和边际成本定价理论,首次将发电商报价曲线的斜率和截距分别作为策略变量设计了一种具有激励相容特性的发电市场竞价机制并推导了相关公式.模型中发电成本考虑了更为通用的二次函数形式,发电报价按线性函数考虑.仿真结果表明,在所考虑的条件及相应设计的竞价机制下,各发电商均有动力按照真实成本报价,所设计的竞价机制是有效的. 相似文献
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In a competitive electricity market, generation companies design bidding strategies to maximize their individual profits subject to the constraints imposed by bidding rules. For a generation company, obviously, the optimal bidding strategy and hence the potential of exercising market power may be different if different bidding rules are employed. Hence, a well-designed bidding protocol is vital to the effective and efficient operation of an electricity market. Based on the widely used stepwise bidding rules, the impacts of different numbers of bidding segments on the bidding strategies of generation companies are investigated. This study is focused on a price-taker generation company in an electricity market. A probabilisic model is used to simulate electricity price in the competitive market environment. With a given number of bidding segments, the optimal bidding strategy for a price-taker generation company is then developed. The effects of risk preferences as well as information asymmetry on the optimal bidding strategy are also examined. With particular references to the impacts of different numbers of bidding segments on the optimal bidding strategy, a numerical example is employed to demonstrate the validity of the proposed model and methodology. 相似文献
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Much of the research on bidding strategies in an electricity market has focused on idealized situations where participants have limited market power and the transmission system is not constrained. Yet, congestion may act to effectively give a bidder market power, and consequently the ability to influence the market clearing price. In such a noncompetitive situation, the bidding strategies of market participants will change. In this paper, the electrical power market is modeled as an oligopoly market and the Cournot quantity model is applied to the bidding strategy problem. The bidding process with congestion management is modeled as a three level optimization problem. A statistical methodology is then proposed as a solution for large systems. 相似文献
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一种可操作的新型发电侧电力市场竞价交易模式 总被引:2,自引:0,他引:2
在对现有发电侧竞价交易模式进行比较分析的基础上,提出一种可操作的发电侧电力市场竞价交易模式——基于由固定成本和变动成本之和确定容量合同电价的“容量合同 效率置换 适时市场”模式。经系统仿真和实际试运营,这种模式是切实可行的。该模式有利于实现资源的优化配置、降低发电总成本。 相似文献
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演化博弈论在发电侧电力市场竞价中的应用 总被引:4,自引:0,他引:4
介绍发电侧电力市场的现状,传统博弈论脱离现实的困境,继而引出演化思想在经济学界受到关注,并形成演化博弈这一新的理论.然后描述研究的基本思想和方法(演化稳定策略,ESS),并将其引入到发电侧电力市场竞价中,对发电厂商行使市场力降低产量、抬高电价的行为进行分析,以及针对发电厂商的这种行为提出解决办法(差价和约).针对这种行为,分析了在三维及N维情况下的演化稳定策略(ESS),并在证明了在N维情况下传统判据仅是一个充分非必要条件之后,提出了一个满足充要条件的新判据.最后,给出仿真算例,验证了差价合约在抑制发电厂商行使市场力方面的作用. 相似文献
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Restructured electricity markets may provide opportunities for producers to exercise market power, maintaining prices in excess of competitive levels. In this paper a Cournot equilibrium model is proposed to obtain generation companies’ (GenCos’) optimal bidding strategies in a day ahead oligopoly market, considering elasticity of demand, market power and transmission security constraints. In order to consider network constraints, a multiperiod auction framework is addressed to simulate market clearing mechanism by means of social welfare maximization, in which the behaviors of market participants are modeled through piecewise block curves. Impact of transmission security constraints on participants’ market power is presented. A mixed integer linear programming is employed to solve the problem, resulting supply-demand satisfaction as well as market clearing prices at each hour. A novel methodology is presented for security constrained optimal bidding strategy of GenCos through introducing heuristic effective-supply curves. Subsequently, impact of GenCos’ power exertion on market characteristics and corresponding payoffs is studied. A 9-bus IEEE test system is used to implement the proposed methodology while simulation results demonstrate the effectiveness of the framework. 相似文献
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对一种基于博弈论的发电厂商参与市场竞价的数学模型进行了研究。该模型以发电厂商的期望收益最大为目标,采用零和二人混合对策描述竞价问题,并假设市场电价符合正态分布。由于实际市场环境有很多不确定因素,模拟运行是评估和修正竞价策略的有效方法。采用实际机组和电力市场的数据,对几种报价方案进行了模拟,对收益和风险进行了统计分析,并对最优报价方案进行了调整。 相似文献