CAJ | 학술논문

温控负荷是电力系统最为重要的负荷类型之一，它对电力系统的小干扰稳定具有重要的影响。针对这类以恒温控制器控制的负荷（温控负荷）展开研究，通过对恒温控制器动态加热方程的分析，建立用于小干扰稳定分析的温控负荷的数学模型。以3机9节点系统为算例在 MATLAB 的电力系统分析工具箱（PSAT）中对温控负荷接入电力系统后对系统小干扰稳定影响进行仿真分析。最后以简单的单机无穷大系统为例，进一步分析其负荷参数变化对系统小干扰稳定的影响。仿真分析结果表明：相对于传统的静态负荷温控负荷不利于系统小干扰电压稳定；温控负荷比例控制增益，环境温度，参考温度，对系统的小干扰稳定影响较大；积分控制器增益，积分控制器时间常数，负荷时间常数对系统小干扰稳定性影响较小。
온공부하시전력계통최위중요적부하류형지일，타대전력계통적소간우은정구유중요적영향。침대저류이항온공제기공제적부하（온공부하）전개연구，통과대항온공제기동태가열방정적분석，건립용우소간우은정분석적온공부하적수학모형。이3궤9절점계통위산례재 MATLAB 적전력계통분석공구상（PSAT）중대온공부하접입전력계통후대계통소간우은정영향진행방진분석。최후이간단적단궤무궁대계통위례，진일보분석기부하삼수변화대계통소간우은정적영향。방진분석결과표명：상대우전통적정태부하온공부하불리우계통소간우전압은정；온공부하비례공제증익，배경온도，삼고온도，대계통적소간우은정영향교대；적분공제기증익，적분공제기시간상수，부하시간상수대계통소간우은정성영향교소。
Thermostatically controlled load is one of the most important types of electrical power load,which has a significant influence on the small disturbance stability of power systems.A math-ematic model of thermostatically controlled load for analysing the small disturbance stability of the power system was constructed based on the dynamic heating equation of thermostat.Using the power system analysis toolbox(PSAT)in MATLAB,a 3-generator 9-bus power system was applied to as-sess the effect of thermostatically controlled load on the small disturbance stability of the power sys-tems.The influences of the parameters of the thermostatically controlled load on the small disturb-ance stability was analysed via single-machine infinite-bus system.Simulation results show that com-pared to the static load model,the thermostatically controlled load has negative influence on power system small disturbance stability.The gain of proportional controller,ambient temperature,refer-ence temperature,time constant of integral controller have considerable influences on the small dis-turbance stability.The gain of proportional controller,the gain of integral controller and time con-stant of integral controller have little influence on the small disturbance stability.