基于戴维南等效的同步发电机励磁控制静态分析

doi:10.16180/j.cnki.issn1007-7820.2019.06.001

Abstract

Abstract:

The power angle of synchronous generator plays an important role in maintaining the safety and stable operation of power system. The static effect of generator excitation control and the difference between the theoretical power angle of generator and the measured power angle of engineering were analyzed in the proposed paper. Firstly, the Thevenin equivalent circuit is used to study the influence of the active power and excitation adjustment circuit on the single-infinity system at constant frequency. Then the steady-state data is used to verify the mathematical relationship. The results showed that the greater the active power of the generator output, the greater the difference between the measured power angle and the theoretical power angle, which affected the judgment of the operating state of the unit and the system. The automatic excitation regulator changed the phase of the terminal voltage while maintaining the constant voltage.

Key words: synchronous generator, angle, measurement, theoretical, excitation, the Thevenin equivalent circuit

CLC Number:

TP272

DENG Yapeng,DUAN Jundong,ZHANG Xiaofang,ZHANG Bin. Based on Thevenin Equivalence Static Analysis of Excitation Control for Synchronous Generator[J].Electronic Science and Technology, 2019, 32(6): 1-6.

Figures/Tables 9

Figure 1.

Figure 2.

Table 1

Table 2

Table 3

Table 4

Figure 3.

Figure 4.

Figure 5.

References 16

[1]	严登俊, 鞠平, 吴峰 , 等. 基于GPS时钟信号的发电机功角实时测量方法[J]. 电力系统自动化, 2002,26(8):38-40.
	Yan Dengjun, Ju Ping, Wu Feng , et al. Real-time measurement method of generator power angle based on GPS clock signal[J]. Autonmation of Electric Power Systems, 2002,26(8):38-40.
[2]	梁振光 . 发电机功角的实时计算方法[J]. 电力系统保护与控制, 2004,32(1):12-15.
	Liang Zhenguang . Real-time calculation metho-d of generator power angle[J]. Power System Protection and Control, 2004,32(1):12-15.
[3]	辛鹏, 戈宝军, 陶大军 , 等. 控-场-路-网耦合的单机-无穷大系统联合仿真建模[J]. 电机与控制学报, 2018,22(6):40-48.
	Xin Peng, Ge Baojun, Tao Dajun , et al. Modeling of one machine infinite bus system of control-field-circuit-network combined simulation[J]. Motor and control journal, 2018,22(6):40-48.
[4]	潘翀, 袁霞, 唐伦 . 大型城市高压配电网可靠性分析[J]. 电力系统保护与控制, 2017,45(3):131-138.
	Pan Chong, Yuan Xia, Tang Lun . Reliability analysis for high voltage distribution network in big cities[J]. Power System Protection and Control, 2017,45(3):131-138.
[5]	谢小荣, 肖晋宇, 李建 , 等. 一种估计同步发电机功角的新方法[J]. 中国电机工程学报, 2003,23(11):106-110.
	Xie Xiaorong, Xiao Jinyu, Li Jian , et al. A new approach to estimtng power angle of synchronous generators[J]. Proceeding of the CSEE, 2003,23(11):106-110.
[6]	董清, 单波, 郝玉山 , 等. 一种发电机稳定监控的实现方法[J]. 电力系统自动化, 1999,23(10):14-19.
	Dong Qing, Shan Bo, Hao Yushan , et al. A method of generator stability monitoring[J]. Autonmation of Electric Power Systems, 1999,23(10):14-19.
[7]	刘素英, 梁军, 李欣唐 , 等. 发电机功角微机测量及其应用[J].电力系统自动化, 1993(10):42-46.
	Liu Suying, Liang Jun, Li Xintang , et al. Microcomputer measurement of generator power angle and its application[J].Autonmation of Electric Power Systems, 1993(10):42-46.
[8]	Kosterev D N, Esztergalyos J, Stigers C A . Feasibility study of using synchronized phasor measurements for generator dropping controls in the Colstrip System[J]. IEEE Transactions on Power Systems, 1998,13(3):755-761. doi: 10.1109/59.708579
[9]	金基圣, 南德哲, 姜佰峰 , 等. 电网动态稳定实时监测系统[J].电力系统自动化, 1999(10):17-19.
	Jin Jisheng, Nan Dezhe, Jiang Baifeng , et al. Real time monitoring system for power network dynamic stability[J].Autonmation of Electric Power Systems, 1999(10):17-19.
[10]	Morioka Y, Tomiyama K, Arima H , et al. System separation equipment to minimize power system instability using generator’s angular-velocity measuremnts[J]. IEEE Transactions on Power Delivery, 1993,8(3):941-947. doi: 10.1109/61.252621
[11]	王荣杰, 詹宜巨, 周海峰 , 等. 基于差分进化机理优化的PID控制的AVR系统[J].电力系统保护与控制, 2015(24):108-114.
	Wang Rongjie, Zhan Yiju, Zhou Haifeng , et al. Pid control AVR system based on differential evolutionary mechanism optimization[J].Power System Protection and Control, 2015(24):108-114.
[12]	窦艳艳, 钱蕾, 冯金龙 . 基于MATLAB的模糊PID控制系统设计及仿真[J]. 电子科技, 2015,28(2):119-122.
	Dou Yanyan, Qian Lei, Feng Jinlong , et al. Design and simulation of fuzzy PID control system based on MATLAB[J]. Electronic Science and Technology, 2015,28(2):119-122.
[13]	肖健梅, 张科, 王锡淮 . 基于预测函数与线性多变量反馈控制的同步发电机励磁控制[J]. 电力自动化设备, 2015,35(7):153-159.
	Xiao Jianmei, Zhang Ke, Wang Xihuai . Excitation control of synchronous generator based on predictive function and linear multivariable feedback control[J]. Power Automation Equipment, 2015,35(7):153-159.
[14]	李宗泽, 史成军 . 基于二维云模型同步发电机PID励磁系统仿真[J]. 电力系统保护与控制, 2016,44(7):19-24.
	Li Zongze, Shi Chengjun . Simulation research on PID excitation system of synchronous generator based on two-dimensional cloud model[J]. Power System Protection and Control, 2016,44(7):19-24.
[15]	Zhao H, Lan X . Excitation prediction control of multi-machine power systems using balance-dreduced-mode[J]. IET Generation,Transmission,Distribution, 2013,8(6):1-5.
[16]	Hou Z, Jin S T . A novel data-driven control approach for a class of discrete time nonlin-ear systems[J]. IEEE Transaction on Control Systems Teachnology, 2011,19(6):1549-1558. doi: 10.1109/TCST.2010.2093136

序号	有功功率 P/MW	无功功率 Q/MVar	定子电压 U_G/kV	定子电流 I/kA	母线电压 E_S/kV	功率因数 cosα	功角实测值 Θ_G/(°)	励磁电压 E_G/V	励磁电流 I_f/A
1	90.6	-3.3	14.96	3.46	231.51	1.00	45.6	142.7	938
2	91.3	1.5	15.02	3.47	231.67	1.00	44.1	145.2	970
3	90.8	7.5	15.10	3.44	231.79	1.00	41.9	152.8	1 000
4	91.4	16.2	15.26	3.47	232.74	0.98	39.2	159.0	1 050
5	120.3	7.8	15.06	4.59	231.43	1.00	49.9	176.4	1 150
6	91.0	32.6	15.46	3.58	232.94	0.94	34.8	174.9	1 155
7	120.4	22.9	15.32	4.58	232.88	0.98	45.2	183.7	1 223
8	91.3	44.2	15.61	3.71	233.16	0.90	32.3	188.9	1 226
9	120.8	47.9	15.68	4.74	234.14	0.93	39.0	208.4	1 368
10	150.6	43.2	15.54	5.78	233.33	0.96	46.6	226.7	1 480
11	150.9	48.1	15.59	5.82	233.27	0.95	45.5	230.5	1 510

有功功率/MW	定子电压/kV	母线电压/kV	ΔU_G/%	ΔE_S/%
90	15.61	233.16	3.78	0.64
90	15.02	231.67	3.78	0.64
120	15.68	234.14	3.95	1.16
120	15.06	231.43	3.95	1.16
150	15.59	233.27	0.32	0.026
150	15.54	233.33	0.32	0.026

序号	有功功率 P/MW	无功功率 Q/MVar	定子电压 U_G/kV	母线电压 E_S/kV	功率因数 cosα	功角实测值 Θ_G/(°)	相角差 Θ_E/(°)	功角理论值 Θ/(°)
1	90.6	-3.3	14.96	231.51	1.00	45.6	6.01	51.61
2	91.3	1.5	15.02	231.67	1.00	44.1	6.29	50.39
3	90.8	7.5	15.10	231.79	1.00	41.9	6.24	48.14
4	91.4	16.2	15.26	232.74	0.98	39.2	6.21	45.41
5	120.3	7.8	15.06	231.43	1.00	49.9	8.28	58.18
6	91.0	32.6	15.46	232.94	0.94	34.8	6.14	40.94
7	120.4	22.9	15.32	232.88	0.98	45.2	8.03	53.23
8	91.3	44.2	15.61	233.16	0.90	32.3	6.12	38.42
9	120.8	47.9	15.68	234.14	0.93	39.0	8.02	47.02
10	150.6	43.2	15.54	233.33	0.96	46.6	10.1	56.7
11	150.9	48.1	15.59	233.27	0.95	45.5	10.12	55.62

序号	有功功率 P/MW	有功功率 Q/MVar	定子电压 U_G/(pu)	定子电流 I/(pu)	母线电压 E_S/(pu)	功率因数 cosα	功角实测值 Θ_G/(°)	功角理论值 Θ/(°)	励磁电压 E_G/(pu)	励磁电流 I_f/A
1	90.6	-3.3	0.95	0.535	0.96	1.00	45.6	51.61	1.31	938
2	91.3	1.5	0.95	0.536	0.96	1.00	44.1	50.39	1.33	970
3	90.8	7.5	0.96	0.532	0.96	1.00	41.9	48.14	1.4	1 000
4	91.4	16.2	0.97	0.536	0.96	0.98	39.2	45.41	1.46	1 050
5	120.3	7.8	0.96	0.710	0.96	1.00	49.9	58.18	1.62	1 150
6	91.0	32.6	0.98	0.553	0.96	0.94	34.8	40.94	1.61	1 155
7	120.4	22.9	0.97	0.708	0.96	0.98	45.2	53.23	1.69	1 223
8	91.3	44.2	0.99	0.574	0.96	0.90	32.3	38.42	1.73	1 226
9	120.8	47.9	1.00	0.733	0.97	0.93	39.0	47.02	1.91	1 368
10	150.6	43.2	0.99	0.893	0.96	0.96	46.6	56.7	2.08	1 480
11	150.9	48.1	0.99	0.9	0.96	0.95	45.5	55.62	2.11	1 510

Based on Thevenin Equivalence Static Analysis of Excitation Control for Synchronous Generator

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 9

References 16

Related Articles 15

Metrics

Comments

Recommended 10

[1]	LIU Jianlong,HAO Zhenghang. Comparative Study of Wind Power System Simulation Based on Back-to-Back Converters [J]. Electronic Science and Technology, 2022, 35(2): 67-73.
[2]	LIU Xuan,FU Dongxiang. Multi-Angle Virtual Glasses Trial Technology Based on Face Attitude Estimation [J]. Electronic Science and Technology, 2021, 34(9): 58-65.
[3]	JIANG Jie. Angle Disambiguation Algorithm for Distributed Sub-Array Antennas Radar Based on Adaptive Spatial Selection Filter [J]. Electronic Science and Technology, 2021, 34(6): 45-49.
[4]	ZHANG Pengfei,WEI Cunwei,LIU Xiankang,LIU Anran,YANG Ou,LIN Yonglin. Research on Ship Target Recognition Method of Narrowband Radar [J]. Electronic Science and Technology, 2021, 34(6): 50-55.
[5]	CHEN Weiren,ZHANG Wenbin,WANG Lizhe,LI Yincheng,QIAO Yuning. Analysis of VFTO Field Measured Waveform Based on Fast Fourier Transform [J]. Electronic Science and Technology, 2021, 34(3): 65-70.
[6]	YAN Zijie,WANG Jingmei,CHEN Zhuo,LIU Yu. Implementation of Software Programmable FPGA Network Measurement Engine Technology [J]. Electronic Science and Technology, 2021, 34(2): 27-32.
[7]	XIAO Xinzhao,LIU Jianxu,WU Guojing,FU Dongxiang. Multi-Sensor Data Fusion in Measurement of Flow Field of Air Velocity in Three-Dimensional Large Space [J]. Electronic Science and Technology, 2021, 34(12): 81-86.
[8]	SAN Hongjun, LI Pengyu, CHEN Jiupeng, HU Qiongqiong, LI Qi, ZHANG Kaixiang, WANG Chen. A Design and Optimization Analysis of the Centered Positioning Mechanism [J]. Electronic Science and Technology, 2021, 34(1): 10-16.
[9]	CHEN Guizhou. Research on Substation Integrated Automation Control System Based on DSP [J]. Electronic Science and Technology, 2020, 33(9): 75-78.
[10]	HAN Qiang,LI Changhao,CHENG Jianpeng,ZHANG Xiliang,LI Boquan,YIN Jingtian. Research on Double Closed Loop Control of Laser Attitude and Angle Sliding Mode of Crane Orbit Detection Robot [J]. Electronic Science and Technology, 2020, 33(7): 17-21.
[11]	PANG Yuefeng,GU Suolin,LI Lisan,YANG Bingxian,CHU Fuyong. A Prediction Method of Receiving Signal for Ground Station Based on the Real-time Telemetry Data of Rockets [J]. Electronic Science and Technology, 2020, 33(6): 58-62.
[12]	ZHANG Tianhao,LI Haolin. A Method of Laser Center Extraction Based on Gaussian Fitting [J]. Electronic Science and Technology, 2020, 33(5): 72-76.
[13]	CUI Yue,ZHANG Wei. A Two Degreeof Freedom PID Control Algorithm for Aircraft Pitch Angle [J]. Electronic Science and Technology, 2020, 33(3): 44-49.
[14]	LIU Zhenxuan,YI Yingping,SHI Wei. Research on the Power Control of Grid-connected Inverter Based on VSG [J]. Electronic Science and Technology, 2020, 33(10): 6-14.
[15]	PANG Yuefeng,CHEN Jianyou,FAN Quanxin,LI Jian. Improvement of Two-channel Multi-pole Resolver Decoding Algorithm [J]. Electronic Science and Technology, 2019, 32(8): 51-55.