CAJ | 학술논문

在大电网平台下，如何利用受端电网间负荷差异与多电源发电特性来消纳区外水电及缓解受端电网的调峰压力，是中国大规模跨区直流水电输送的关键问题之一。文中以华东电网为背景，从实际应用需求出发，提出了按需供给、多电源互补的大规模跨区特高压直流水电网省两级协调电力控制和电量控制优化调度模型。华东电网2013年典型日模拟调度结果表明，与目前采用的经验调度方法相比，电力控制与电量控制模型下华东电网各省(市)电网负荷平均调峰率分别提高了21.3%和39.3%，调峰效果非常显著；此外，对华东电网2013年全年采用电力控制模型进行日96点试调度运行，结果表明全年平均调峰率提高了20.5%，充分显示了优化水电输送与分配方式的巨大潜力。
재대전망평태하，여하이용수단전망간부하차이여다전원발전특성래소납구외수전급완해수단전망적조봉압력，시중국대규모과구직류수전수송적관건문제지일。문중이화동전망위배경，종실제응용수구출발，제출료안수공급、다전원호보적대규모과구특고압직류수전망성량급협조전력공제화전량공제우화조도모형。화동전망2013년전형일모의조도결과표명，여목전채용적경험조도방법상비，전력공제여전량공제모형하화동전망각성(시)전망부하평균조봉솔분별제고료21.3%화39.3%，조봉효과비상현저；차외，대화동전망2013년전년채용전력공제모형진행일96점시조도운행，결과표명전년평균조봉솔제고료20.5%，충분현시료우화수전수송여분배방식적거대잠력。
Under the large-scale power grid platform, one of the key issues of large-scale trans-regional hydropower transmission via ultra-high voltage direct current(UHVDC)is how to fully utilize the load differences of receiving power grids and the generation characteristics of multiple power sources to accommodate external hydropower and mitigate pressures on peak shaving load.Against the background of East China power grid (ECPG) and proceeding from demand on practical application,this paper proposes two coordinated and optimized dispatching models (the power-control model and the energy-control model) for large-scale trans-regional hydropower transmission via UHVDC in regional and provincial power grids.In the two dispatching models,power is supplied according to demand with the multiple power sources supplementing each other. The simulation scheduling results from ECPG on a typical day in 2013 show that,compared with the present empirical scheduling,the average peak shaving ratio of various provincial and municipal power grids with the power-control model and the energy-control model is improved by 21.3% and 39.3%,respectively.The effect of peak shaving is very significant. Moreover,the daily 96-point test using the power-control model is carried out in ECPG in the whole year of 2013.The results show that the annual average peak shaving ratio is improved by 20.5%,fully demonstrating the immense potential of optimal hydropower transmission and allocation.