CAJ | 학술논문

针对“三北”地区热电机组比重大、冬季供暖期间弃风现象严重的问题，提出了在二级热网增设调峰电锅炉的消纳弃风方案。根据二级热网电锅炉的供热系统结构，建立了调峰电锅炉的启停控制模型和一级热网、二级热网的热平衡方程。并以煤耗量为目标函数，构建了一种电负荷由全网机组平衡、热负荷由各热电厂与调峰电锅炉就地平衡、计及热电机组电功率上下限与抽汽量之间的函数关系的电热联合调度模型。研究了电锅炉容量、不同热负荷调峰方案对全系统煤耗量、弃风量的影响。算例分析结果表明，该方案能够改变热电机组的供热、供电曲线，在降低热电机组热负荷峰值的同时增加了电网负荷谷值，从而为风电提供更大上网空间，提升了风电消纳能力。
침대“삼북”지구열전궤조비중대、동계공난기간기풍현상엄중적문제，제출료재이급열망증설조봉전과로적소납기풍방안。근거이급열망전과로적공열계통결구，건립료조봉전과로적계정공제모형화일급열망、이급열망적열평형방정。병이매모량위목표함수，구건료일충전부하유전망궤조평형、열부하유각열전엄여조봉전과로취지평형、계급열전궤조전공솔상하한여추기량지간적함수관계적전열연합조도모형。연구료전과로용량、불동열부하조봉방안대전계통매모량、기풍량적영향。산례분석결과표명，해방안능구개변열전궤조적공열、공전곡선，재강저열전궤조열부하봉치적동시증가료전망부하곡치，종이위풍전제공경대상망공간，제승료풍전소납능력。
Aiming atproblem ofbig proportion of cogenerationunits inthree Northern areas,leadingto serious windcurtailment, the paper presents a schemeofadding peak-shaving electric boiler in secondary heat supply network (heat exchange station). Based on heat system with boilersin secondary heat supply network, start/stop control model of peaking electric boilersand heating balance equation of primary and secondary networksare established.Taking coal consumption as objective function, the paper builds joint scheduling model of electricity and heat,whereelectrical load is balancedwithallnetwork units while thermalload with cogeneration units and peak-shaving electric boilers, and relationship between lower and upper power limitsof cogeneration units is also considered. At the same time, influence ofdifferent peak shaving schemeoncoal consumption and windcurtailmentis taken into consideration. The results show that this scheme, reducingpeak heat load of thermal power units andincreasingvalley electric load of power system, can optimize thermal and electric load curveof operatingunits, offeringmore space for wind power accommodation.