电力自动化设备
電力自動化設備
전력자동화설비
ELECTRIC POWER AUTOMATION EQUIPMENT
2010年
3期
7-14
,共8页
电力系统%微网%总体模型%电机模型%静态模型%元件模型
電力繫統%微網%總體模型%電機模型%靜態模型%元件模型
전력계통%미망%총체모형%전궤모형%정태모형%원건모형
power system%microgrid%general model%motor model%static model%element model
微网是集分布式电源、负荷和储能设备的小型电网,通过公共耦合点与大电网相连,与大电网之间的功率可双向流动,需对微网进行建模以研究微网接入.从微网基本元件出发,分析了微网负荷、电源元件模型与传统电力系统元件模型之间的联系,借鉴负荷建模理论,提出了微网整体建模的思路,将微网中静态负荷与外部表现为静态特性的电源等效为等效静态模型,推荐采用幂函数模型:将风力发电机、电动机等动态元件等效为等效电机模型,并从理论上推导了等效电机的通用模型.
微網是集分佈式電源、負荷和儲能設備的小型電網,通過公共耦閤點與大電網相連,與大電網之間的功率可雙嚮流動,需對微網進行建模以研究微網接入.從微網基本元件齣髮,分析瞭微網負荷、電源元件模型與傳統電力繫統元件模型之間的聯繫,藉鑒負荷建模理論,提齣瞭微網整體建模的思路,將微網中靜態負荷與外部錶現為靜態特性的電源等效為等效靜態模型,推薦採用冪函數模型:將風力髮電機、電動機等動態元件等效為等效電機模型,併從理論上推導瞭等效電機的通用模型.
미망시집분포식전원、부하화저능설비적소형전망,통과공공우합점여대전망상련,여대전망지간적공솔가쌍향류동,수대미망진행건모이연구미망접입.종미망기본원건출발,분석료미망부하、전원원건모형여전통전력계통원건모형지간적련계,차감부하건모이론,제출료미망정체건모적사로,장미망중정태부하여외부표현위정태특성적전원등효위등효정태모형,추천채용멱함수모형:장풍력발전궤、전동궤등동태원건등효위등효전궤모형,병종이론상추도료등효전궤적통용모형.
Microgrid is a small power system,composed of loads,DG(Distributed Generators) and storage devices, and connected to the power network via common coupling point. Power flows bidirectionally between microgrid and power system. It is necessary to build the microgrid model for studying its connection to power network. The relation between the load and DG models of microgrid and the element models of traditional power system is analyzed and the general microgrid model is developed based on the load modeling theory. The static elements of load and DG with static exterior characteristic are represented as the equivalent static model,for which the exponential function model is recommended,and the dynamic elements of synchronous generator,wind generator and motor load as the equivalent machine model,for which the universal equivalent machine model is theoretically derived.
