先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)能够提高新能源消纳率,是新型电力系统的关键技术.由于AA-CAES系统的压缩机采用离心式压缩机,在运行过程中存在喘振与阻塞现象,严重影响系统的安全运行.为此,该文研究AA-CAES系统压缩侧安全控制策略.首先,提出基于压缩机质量流率斜率的喘振和阻塞现象的简易判断方法,确定压缩机在给定转速下允许流过的空气质量流率的范围;然后,设计压缩子系统的防喘振和阻塞控制策略,利用可变流量法通过控制压缩机的进口导叶角度来限制压缩机空气质量流率的范围;最后,分别在启停工况和并网运行工况下进行仿真,验证了该控制策略的有效性.
Safety Control Strategy of Compressed Air Energy Storage Based on Variable Flow Control
Advanced adiabatic compressed air energy storage(AA-CAES)can improve the rate of new energy consumption,and it is a key technology for new power systems.Since the compressor of the AA-CAES system adopts a centrifugal compressor,there is a phenomenon of surge and blockage during the operation,which seriously affects the safe operation of the system.In this paper,the safety control strategy of the compression side of the AA-CAES system is investigated.Firstly,a simple judgement method of the surge and blockage phenomena based on the slope of the compressor mass flow rate is proposed,and the range of the compressor·s allowable mass flow rate of air flowing through the compressor at a given rotational speed is determined.Then,the anti-surge and blockage control strategy of the compression subsystem is designed to limit the range of compressor air mass flow rate by controlling the angle of the inlet guide vane of the compressor using the variable flow method.Finally,simulations are carried out under the start-stop condition and grid-connected operation condition to verify the effectiveness of the control strategy.
advanced adiabatic compressed air energy storage(AA-CAES)variable flow controlsurgeblockage
万方数据
维普
