CAJ | 학술논문

微网的运行控制是维持微网安全稳定运行的关键技术,可分为局部的分布式电源控制和系统级的综合运行控制2部分.文中将微网内分布式电源分为主控型和功率源型2类,分析并阐述了2类分布式电源的控制方法,提出了适用于即插即用的分布式电源并网接口.在系统级的综合运行控制方面,选择集中式的运行控制体系,提出了联网运行控制和无缝切换控制策略;同时针对运行控制关键技术测试的需求,设计、开发了微网运行控制平台,并通过该平台对电源控制和无缝切换控制等技术进行了实验,表明该平台能够很好地完成微网运行控制相关技术的研究和测试工作.
미망적운행공제시유지미망안전은정운행적관건기술,가분위국부적분포식전원공제화계통급적종합운행공제2부분.문중장미망내분포식전원분위주공형화공솔원형2류,분석병천술료2류분포식전원적공제방법,제출료괄용우즉삽즉용적분포식전원병망접구.재계통급적종합운행공제방면,선택집중식적운행공제체계,제출료련망운행공제화무봉절환공제책략;동시침대운행공제관건기술측시적수구,설계、개발료미망운행공제평태,병통과해평태대전원공제화무봉절환공제등기술진행료실험,표명해평태능구흔호지완성미망운행공제상관기술적연구화측시공작.
Mierogrid operation control is the critical technology for microgrid security and stability. It can be divided into two parts: local-level distributed generation (DG) control and system-level operation control. For the local-level DG control, the paper divides all kinds of DGs into two clusters: master type and power source type. The different control schemes for two DG clusters are proposed. The master type DGs use droop control scheme in the island mode and use PV control scheme in the grid-connected mode, while the power source type DGs use PQ control scheme in both modes. The DG and microgrid interface for plug and play is presented. For the system-level operation control, the paper adopts supervisory operation control system, and presents microgrid grid-connected operation control strategy and seamless control strategy. The testbed for microgrid operation control is designed and developed. The testbed comprises one distributed PV generator, one wind turbine, one Capstone C30 microturbine, a battery energy storage and controllable loads. Currently, the testbed is used to test the DG control schemes and seamless control scheme, and experiment results show that the proposed strategy for microgrid operation control is effective and promising. And these tests also proved that the testbed can perfectly undertake the research and test work of microgrid operation control technology.