四川电力技术
四川電力技術
사천전력기술
Sichuan Electric Power Technology
2015年
5期
17-20
,共4页
周专%赵志强%王新刚%张增强%宋新甫%关洪浩
週專%趙誌彊%王新剛%張增彊%宋新甫%關洪浩
주전%조지강%왕신강%장증강%송신보%관홍호
风电场%风电机组%次暂态电抗%短路电流
風電場%風電機組%次暫態電抗%短路電流
풍전장%풍전궤조%차잠태전항%단로전류
wind farm%wind turbine%subtransient reactance%short-circuit current
随着国家政策对环保型、可再生能源利用及能源开发方面的倾斜,以及风电并网技术的不断提高,风电装机规模迅猛增长,对风电开发由分散式开发转化为集中式开发. 但规模化风电接入给电网运行带来许多问题,如电压控制、短路电流、设备选型等问题. 规模化风电集中接入,将对系统提供一定的短路电流,影响设备选型、升压站中低压侧的运行方式等,从而制约风电的集中开发建设. 因此通过对不同风电机组型号(双馈式和直驱式)及不同容量的单个风电机组对系统提供的短路电流分析,根据风电机组短路PMU录波曲线和风电机组模型短路仿真曲线,提出了一种工程计算方法,计算出不同型号和不用容量的风电机组次暂态电抗,进而建立风电场短路电流计算模型,分析一个风电场对系统提供的短路电流. 为风电场及风电汇集站的规划设计和设备选型提供了重要的参考依据.
隨著國傢政策對環保型、可再生能源利用及能源開髮方麵的傾斜,以及風電併網技術的不斷提高,風電裝機規模迅猛增長,對風電開髮由分散式開髮轉化為集中式開髮. 但規模化風電接入給電網運行帶來許多問題,如電壓控製、短路電流、設備選型等問題. 規模化風電集中接入,將對繫統提供一定的短路電流,影響設備選型、升壓站中低壓側的運行方式等,從而製約風電的集中開髮建設. 因此通過對不同風電機組型號(雙饋式和直驅式)及不同容量的單箇風電機組對繫統提供的短路電流分析,根據風電機組短路PMU錄波麯線和風電機組模型短路倣真麯線,提齣瞭一種工程計算方法,計算齣不同型號和不用容量的風電機組次暫態電抗,進而建立風電場短路電流計算模型,分析一箇風電場對繫統提供的短路電流. 為風電場及風電彙集站的規劃設計和設備選型提供瞭重要的參攷依據.
수착국가정책대배보형、가재생능원이용급능원개발방면적경사,이급풍전병망기술적불단제고,풍전장궤규모신맹증장,대풍전개발유분산식개발전화위집중식개발. 단규모화풍전접입급전망운행대래허다문제,여전압공제、단로전류、설비선형등문제. 규모화풍전집중접입,장대계통제공일정적단로전류,영향설비선형、승압참중저압측적운행방식등,종이제약풍전적집중개발건설. 인차통과대불동풍전궤조형호(쌍궤식화직구식)급불동용량적단개풍전궤조대계통제공적단로전류분석,근거풍전궤조단로PMU록파곡선화풍전궤조모형단로방진곡선,제출료일충공정계산방법,계산출불동형호화불용용량적풍전궤조차잠태전항,진이건립풍전장단로전류계산모형,분석일개풍전장대계통제공적단로전류. 위풍전장급풍전회집참적규화설계화설비선형제공료중요적삼고의거.
With the inclination of national policy on environmental protection , renewable energy utilization and energy develop-ment, and the constant improvement of wind power technology , the installed capacity of wind power grows rapidly , and the de-velopment of wind power is changed from the distributed development to the centralized development .But large-scale wind power integration brings many problems to the operation of power grid , such as voltage control , short-circuit current , equip-ment selection etc .The centralized integration of large -scale wind power will provide a certain short -circuit current , influ-ence the equipment selection and operating mode in mid -voltage side and low -voltage side of booster station , thereby it con-strains the concentrated development and construction of wind power .Therefore, through the short -circuit current analysis supplied by a single wind turbine with different wind turbine models ( double-fed and direct-drive) and different capacity , an engineering calculation method is proposed based on short -circuit PMU recorded wave curve of wind turbine and short -circuit simulation curve of wind turbine model .It can calculate the subtransient reactance of wind turbines with different mod-els and capacity , thereby the calculation model of short -circuit current for wind farms is established to analyze the short -cir-cuit current supplied by a wind farm to the system .It provides an important reference for the planning , design and equipment selection of wind farms and wind power collecting stations .