Abstract
Smart grid puts forward new requirements in the planning, operation and management of power systems. Conventional analysis and control methods with rigid constraints can hardly meet the requirements of flexibility in smart grids. This paper introduces the main existing flexible analysis and control methods in power systems, including flexible alternating current transmission system (FACTS), flexible power network planning, power system operation flexibility evaluation, and demand side management (DSM). Finally, some conclusions are made and further possible applications of flexible analysis and control methods in smart grids are prospected. DOI: http://dx.doi.org/10.5755/j01.eee.19.10.5892
Highlights
With the continuous increasing of power demands and deepening reform of electricity markets, power grids throughout the world are faced with unprecedented challenges
flexible AC transmission system (FACTS) is the earliest application of flexible control technology in power systems, where the flexibility mainly refers to the controllability of node voltage and transmission line current
Blind power flow can be calculated based on blind model (BM) of uncertain factors
Summary
With the continuous increasing of power demands and deepening reform of electricity markets, power grids throughout the world are faced with unprecedented challenges. The generation power grids should meet the requirements on improving resource utilization efficiency, grid operation safety, grid-consumer interaction, etc. Under such circumstances, smart grids are vividly portrayed [1], [2]. In terms of hardware solutions, there mainly exist flexible AC transmission system (FACTS), dynamic thermal line rating technology, etc. In terms of software solutions, there mainly exist flexible power network planning methods, power system operation flexibility evaluation method, demand side management (DSM), etc. The above mentioned hardware and software flexible analysis and control methods in power system are introduced, from which an overall framework of the existing power system flexible technologies can be given.
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