带脉冲负载的独立电力系统源载耦合关系及功率分配
|
摘要
带有脉冲负载的独立电力系统(PL-IPS)是一个源载耦合度很高、极不稳定的非线性动态系统。本文建立了带典型结构的整流类脉冲负载独立电力系统的数学模型,对源载耦合数学关系进行推导,基于源载"解耦合"模型,从理论上对PL-IPS系统运行机理进行分析,指出源载双端通过电源内阻抗相互耦合,交流侧频率、电压和功率的脉动特性与脉冲负载的脉冲频率和固有频率直接相关;并结合脱、联网试验指出,脉冲频率越小,PL-IPS源载双端耦合程度越高,系统稳定性越低;并进一步指出传统平均功率分配方法无法保证PL-IPS的稳定性,以国标为依据,针对60 kW的IPS给出可实施的脉冲负载功率分配表。所述模型及相关结论对脉冲负载在IPS中的应用、设计、功率分配具有参考价值和指导意义。
The isolated power system with pulsed load(PL-IPS) is a source-load highly coupled, unstable and nonlinear dynamic system. We established an isolated power system with a typical structure of rectifier class pulsed load, and deduced a source-load mathematical relationship. Based on the source-load uncoupled model, the operation mechanism of PL-IPS was theoretically analyzed. It is pointed out that the source and the load are coupled to each other through the power source inner impendence, and the fluctuation characteristics of the frequency, the voltage and the instantaneous power are directly related to the pulse frequency and inherent frequency of the pulsed load. Combined with the on-and off-line test, it is revealed that the lower the pulse frequency is, the higher the coupling degree of the PL-IPS source-load and the lower the system stability will be. It is further pointed out that the traditional average power assignment cannot guarantee the stability of PL-IPS, and according to the national standard, an appliable power distribution table can be worked out for pulsed load in IPS of 60 kW. The proposed model and related conclusions have reference values and guiding significance for application, design and power distribution of IPS with pulsed load.
The isolated power system with pulsed load(PL-IPS) is a source-load highly coupled, unstable and nonlinear dynamic system. We established an isolated power system with a typical structure of rectifier class pulsed load, and deduced a source-load mathematical relationship. Based on the source-load uncoupled model, the operation mechanism of PL-IPS was theoretically analyzed. It is pointed out that the source and the load are coupled to each other through the power source inner impendence, and the fluctuation characteristics of the frequency, the voltage and the instantaneous power are directly related to the pulse frequency and inherent frequency of the pulsed load. Combined with the on-and off-line test, it is revealed that the lower the pulse frequency is, the higher the coupling degree of the PL-IPS source-load and the lower the system stability will be. It is further pointed out that the traditional average power assignment cannot guarantee the stability of PL-IPS, and according to the national standard, an appliable power distribution table can be worked out for pulsed load in IPS of 60 kW. The proposed model and related conclusions have reference values and guiding significance for application, design and power distribution of IPS with pulsed load.
引文
[1]SAURABH K,SURYA S.Impact of pulsed loads on electric ship power system:with and without flywheel energy storage system[J].IEEE Transactions on Magnetics,2009,21(10):23-30.
[2]JONATHAN M C,SCOTT D S.Reducing impact of pulsed power loads on microgrid power systems[J].IEEE Transactions on Smart Grid,2010,1(3):270-277.
[3]刘正春,朱长青,王勇,等.脉冲负载下电力系统暂稳态功率特性研究[J].电网技术,2017,41(9):3018-3026.LIU Zhengchun,ZHU Changqing WANG Yong,et al.Transient and steady-state power characteristics of power system with pulsed load[J].Power System Technology,2017,41(9):3018-3026.
[4]韩航星,严豪杰,徐晔,等.脉冲负载作用下衡量电压畸变率的方法研究[J].现代雷达,2016,38(2):70-76.HAN Hangxing,YAN Haojie,XU Ye.A study on the method measuring the distortion rate of voltage under the action of pulse load[J].Morden Radar,2016,38(2):70-76.
[5]刘正春,王勇,尹志勇,等.有限容量系统脉冲性负荷建模与仿真[J].华北电力大学学报,2014,41(1):33-37.LIU Zhengchun,WANG Yong,YIN Zhiyong,et al.Modeling and simulation of pulsed power load inlimited capacity system[J].Journal of North China Electric Power University,2014,41(1):33-37.
[6]陈宇航,王刚.含脉冲负载的综合电力系统运行特性分析[J].船电技术,2016,36(6):1-5.CHEN Yuhang,WANG Gang.Operation characteristics of integrated power system with pulse load[J].Marine Electric and Electronic Engineering,2016,36(6):1-5.
[7]侯朋飞,王金全,季少卫,等.柴油发电机组带雷达脉冲负载暂态特性研究[J].现代雷达,2017,39(5):89-94.HOU Pengfei,WANG Jinquan,JI Shaowei,et al.A study on transient characteristics of diesel generating sets with radar pulsed load[J].Morden Radar,2017,39(5):89-94.
[8]胡亚超,徐晔,李建科,等.柴油发电机组-脉冲负载系统运行行为仿真[J].现代雷达,2015,36(7):74-78.HU Yachao,XU Ye,LI Jianke,et al.Simulation on operation action for system consisted of diesel generator sets and pulse load[J].Morden Radar,2015,36(7):74-78.
[9]高雪平,付立军,马凡.含高能脉冲负载的综合电力系统运行性能分析[J].舰船科学技术,2016,38(10):116-121.GAO Xueping,FU Lijun,MA Fan.Performance analysis of integrated power system with pulse load[J].Ship Science and Technology,2016,38(10):116-121.
[10]刘正春,朱长青,王勇,等.负荷冲击性对独立电力系统暂态特性的影响[J].高电压技术,2017,43(10):3443-3453.LIU Zhengchun,ZHU Changqing,WANG Yong,et al.Influence of impact load on transient characteristics of isolated power system[J].High Voltage Engineering,2017,43(10):3443-3453.
[11]刘正春,朱长青,赵锦成,等.独立电力系统非线性负荷暂态特性仿真[J].高电压技术,2017,43(1):329-336.LIU Zhengchun,ZHU Changqing,ZHAO Jincheng,et al.Simulations on transient characteristics of non-linear load in isolated power system[J].High Voltage Engineering,2017,43(1):329-336.
[12]FENG X Y,PURRY B,ZOURNTOS T.A multi-agent system framework for real-time electric load management on MVAC all-electric ship power systems[J].IEEE Transactions on Power Systems,2015,30(3):1327-1335.
[13]姚建国,杨胜春,王珂,等.智能电网“源-网-荷”互动运行控制概念及研究框架[J],电力系统自动化,2012,36(21):1-12.YAO Jianguo,YANG Shengchun,WANG Ke,et al.Concept and research framework of smart grid“source-grid-load”interactive operation and control[J].Automation of Electric Power Systems,2012,36(21):1-12.
[14]NING Z,YUHUI Z,MINGTAO Y,et al.A fuzzy bi-objective unit commitment model considering source-grid-load interactions[C]∥2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference.Xi’an,China:IEEE,2013:1-7.
[15]马伟明,胡安,刘德志,等.同步发电机-整流器-反电动势负载系统的稳定性分析[J].电工技术学报,2000,15(1):1-6.MA Weiming,HU An,LIU Dezhi,et al.Stability analysis of synchronous machine with diode-bridge rectifier and back-EMF load[J].Transactions of China Electrotechnical Society,2000,15(1):1-6.
[16]苗福丰,唐西胜,齐智平.风储联合调频下的电力系统频率特性分析[J].高电压技术,2015,41(7):2209-2217.MIAO Fufeng,TANG Xisheng,QI Zhiping.Analysis of frequency characteristics of power system based on wind farm-energy storage combined frequency regulation[J].High Voltage Engineering,2015,41(7):2209-2217.
[17]唐飞,杨健,刘涤尘,等.基于电压频率特性的大区联网失步振荡中心研究[J].高电压技术,2015,41(3):754-761.TANG Fei,YANG Jian,LIU Dichen,et al.Study on the oscillation center of interconnected area power grids based on voltage frequency characteristic[J].High Voltage Engineering,2015,41(3):754-761.
[18]徐少华,李建林,惠东.多储能逆变器并联系统在微网孤岛条件下的稳定性分析及其控制策略[J].高电压技术,2015,41(10):3266-3273.XU Shaohua,LI Jianlin,HUI Dong.Stability analysis and control strategy of parallel storage inverter system working under the micro-grid’s island condition[J].High Voltage Engineering,2015,41(10):3266-3273.
[19]电能质量-电力系统频率偏差:GB/T 15945-2008[S],2008.Power quality-frequency deviation for power system:GB/T15945-2008[S],2008.
[20]电能质量-供电电压允许偏差:GB/T 12325-2008[S],2008.Power quality-deviation of supply voltage:GB/T 12325-2008[S],2008.
[2]JONATHAN M C,SCOTT D S.Reducing impact of pulsed power loads on microgrid power systems[J].IEEE Transactions on Smart Grid,2010,1(3):270-277.
[3]刘正春,朱长青,王勇,等.脉冲负载下电力系统暂稳态功率特性研究[J].电网技术,2017,41(9):3018-3026.LIU Zhengchun,ZHU Changqing WANG Yong,et al.Transient and steady-state power characteristics of power system with pulsed load[J].Power System Technology,2017,41(9):3018-3026.
[4]韩航星,严豪杰,徐晔,等.脉冲负载作用下衡量电压畸变率的方法研究[J].现代雷达,2016,38(2):70-76.HAN Hangxing,YAN Haojie,XU Ye.A study on the method measuring the distortion rate of voltage under the action of pulse load[J].Morden Radar,2016,38(2):70-76.
[5]刘正春,王勇,尹志勇,等.有限容量系统脉冲性负荷建模与仿真[J].华北电力大学学报,2014,41(1):33-37.LIU Zhengchun,WANG Yong,YIN Zhiyong,et al.Modeling and simulation of pulsed power load inlimited capacity system[J].Journal of North China Electric Power University,2014,41(1):33-37.
[6]陈宇航,王刚.含脉冲负载的综合电力系统运行特性分析[J].船电技术,2016,36(6):1-5.CHEN Yuhang,WANG Gang.Operation characteristics of integrated power system with pulse load[J].Marine Electric and Electronic Engineering,2016,36(6):1-5.
[7]侯朋飞,王金全,季少卫,等.柴油发电机组带雷达脉冲负载暂态特性研究[J].现代雷达,2017,39(5):89-94.HOU Pengfei,WANG Jinquan,JI Shaowei,et al.A study on transient characteristics of diesel generating sets with radar pulsed load[J].Morden Radar,2017,39(5):89-94.
[8]胡亚超,徐晔,李建科,等.柴油发电机组-脉冲负载系统运行行为仿真[J].现代雷达,2015,36(7):74-78.HU Yachao,XU Ye,LI Jianke,et al.Simulation on operation action for system consisted of diesel generator sets and pulse load[J].Morden Radar,2015,36(7):74-78.
[9]高雪平,付立军,马凡.含高能脉冲负载的综合电力系统运行性能分析[J].舰船科学技术,2016,38(10):116-121.GAO Xueping,FU Lijun,MA Fan.Performance analysis of integrated power system with pulse load[J].Ship Science and Technology,2016,38(10):116-121.
[10]刘正春,朱长青,王勇,等.负荷冲击性对独立电力系统暂态特性的影响[J].高电压技术,2017,43(10):3443-3453.LIU Zhengchun,ZHU Changqing,WANG Yong,et al.Influence of impact load on transient characteristics of isolated power system[J].High Voltage Engineering,2017,43(10):3443-3453.
[11]刘正春,朱长青,赵锦成,等.独立电力系统非线性负荷暂态特性仿真[J].高电压技术,2017,43(1):329-336.LIU Zhengchun,ZHU Changqing,ZHAO Jincheng,et al.Simulations on transient characteristics of non-linear load in isolated power system[J].High Voltage Engineering,2017,43(1):329-336.
[12]FENG X Y,PURRY B,ZOURNTOS T.A multi-agent system framework for real-time electric load management on MVAC all-electric ship power systems[J].IEEE Transactions on Power Systems,2015,30(3):1327-1335.
[13]姚建国,杨胜春,王珂,等.智能电网“源-网-荷”互动运行控制概念及研究框架[J],电力系统自动化,2012,36(21):1-12.YAO Jianguo,YANG Shengchun,WANG Ke,et al.Concept and research framework of smart grid“source-grid-load”interactive operation and control[J].Automation of Electric Power Systems,2012,36(21):1-12.
[14]NING Z,YUHUI Z,MINGTAO Y,et al.A fuzzy bi-objective unit commitment model considering source-grid-load interactions[C]∥2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference.Xi’an,China:IEEE,2013:1-7.
[15]马伟明,胡安,刘德志,等.同步发电机-整流器-反电动势负载系统的稳定性分析[J].电工技术学报,2000,15(1):1-6.MA Weiming,HU An,LIU Dezhi,et al.Stability analysis of synchronous machine with diode-bridge rectifier and back-EMF load[J].Transactions of China Electrotechnical Society,2000,15(1):1-6.
[16]苗福丰,唐西胜,齐智平.风储联合调频下的电力系统频率特性分析[J].高电压技术,2015,41(7):2209-2217.MIAO Fufeng,TANG Xisheng,QI Zhiping.Analysis of frequency characteristics of power system based on wind farm-energy storage combined frequency regulation[J].High Voltage Engineering,2015,41(7):2209-2217.
[17]唐飞,杨健,刘涤尘,等.基于电压频率特性的大区联网失步振荡中心研究[J].高电压技术,2015,41(3):754-761.TANG Fei,YANG Jian,LIU Dichen,et al.Study on the oscillation center of interconnected area power grids based on voltage frequency characteristic[J].High Voltage Engineering,2015,41(3):754-761.
[18]徐少华,李建林,惠东.多储能逆变器并联系统在微网孤岛条件下的稳定性分析及其控制策略[J].高电压技术,2015,41(10):3266-3273.XU Shaohua,LI Jianlin,HUI Dong.Stability analysis and control strategy of parallel storage inverter system working under the micro-grid’s island condition[J].High Voltage Engineering,2015,41(10):3266-3273.
[19]电能质量-电力系统频率偏差:GB/T 15945-2008[S],2008.Power quality-frequency deviation for power system:GB/T15945-2008[S],2008.
[20]电能质量-供电电压允许偏差:GB/T 12325-2008[S],2008.Power quality-deviation of supply voltage:GB/T 12325-2008[S],2008.