CAJ | 학술논문

在含风电场的经济调度中,风电的不确定性将引起运行成本的不确定,给经济调度决策过程带来风险,即运行成本风险。为考虑风电的不确定性,并进行运行成本风险管理,文中通过一组风电出力场景及其发生概率来描述风电出力,结合投资组合管理中的均值—半绝对离差（mean lowersemi-absolute deviation,MLSAD）模型,提出一种利用半绝对离差计量运行成本风险的经济调度模型,以同时考虑运行成本的期望和风险。此外,抽水蓄能机组以其快速响应的特点成为平衡风电的有力手段,文中考虑风电、火电、抽水蓄能电站的联合经济调度。算例表明,提出的模型能够反映联合经济调度的本质特征,能够转化为简单形式和快速求解,能够考虑电力运行者的风险偏好,并较好地权衡运行成本的期望和风险。
재함풍전장적경제조도중,풍전적불학정성장인기운행성본적불학정,급경제조도결책과정대래풍험,즉운행성본풍험。위고필풍전적불학정성,병진행운행성본풍험관리,문중통과일조풍전출력장경급기발생개솔래묘술풍전출력,결합투자조합관리중적균치—반절대리차（mean lowersemi-absolute deviation,MLSAD）모형,제출일충이용반절대리차계량운행성본풍험적경제조도모형,이동시고필운행성본적기망화풍험。차외,추수축능궤조이기쾌속향응적특점성위평형풍전적유력수단,문중고필풍전、화전、추수축능전참적연합경제조도。산례표명,제출적모형능구반영연합경제조도적본질특정,능구전화위간단형식화쾌속구해,능구고필전력운행자적풍험편호,병교호지권형운행성본적기망화풍험。
The uncertainty of wind power generation leads to the uncertainty of operation cost,resulting in risks in the economic dispatch,i.e.operation cost risk.In order to take into account of the uncertainty of wind power and achieve a better management of operation cost risk,a set of scenarios and corresponding probabilities are adopted to approximate wind power output.By use of mean lower semi-absolute deviation(MLASD) model,the proposed economic dispatch model can balance the expectation and risk of operation cost.As pumped storage power station is good at balancing wind power uncertainty,it is included in the proposed economic dispatch model.Case studies show that the proposed model can effectively reflect the essential characteristics of economic dispatch with wind power and pumped storage,and operators' downside aversion for operation cost risk.It can also be transformed into a simple format and be solved fast.