SBR-based LVRT of synchronous generators in biomass power plants

被引：0
|
作者：
Li S. [1 ]
An R. [1 ]
Sun Q. [1 ]
机构：
[1] School of Electrical Engineering and Automation, Hefei University of Technology, Hefei
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2017年 / 37卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Biomass power plants; Equal area criterion; Low-voltage ride-through; Series braking resistor; Synchronous generators;
D O I：
10.16081/j.issn.1006-6047.2017.02.001
中图分类号：
学科分类号：
摘要：
As the LVRT(Low-Voltage Ride-Through) method for large-scale SG(Synchronous Generator) is not suit for the SG in BPP(Biomass Power Plant), SBR(Series Braking Resistor) is applied to achieve the LVRT of SG in BPP. An analytical method based on the equal area criterion considering the dynamic control of excitation system is proposed to calculate the resistance of SBR. Based on the excitation control system and SG model, the active power of SBR is quantified and introduced to the accelerating area for building the expressions of accelerating area and decelerating area. Combined with the mechanical power and switch-in rotor angle, the equal area criterion is applied to deduce the analytical method for calculating the minimum SBR to meet the requirements of LVRT. The influences of different system parameters on SBR are analyzed for determining the parameters of new BPP. The results of dynamic simulation verify the correctness of the introduced analytical method. It is found that, larger inertia of SG or upper limit of field voltage, smaller qaxis synchronous reactance or d-axis transient reactance or transformer reactance and smaller mechanical power or switch-in rotor angle will require smaller resistance of SBR. Arranged from bigger to smaller according to their impacts on SBR, the influencing system parameters are d-axis transient reactance, SG inertia time constant, q-axis synchronous reactance, transformer reactance and upper field voltage limit. © 2017, Electric Power Automation Equipment Press. All right reserved.
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页码：1 / 6
页数：5
相关论文
共 23 条
  • [1] Yan X., Wu M., Biomass power generation and comprehensive energy utilization, Shanxi Electric Power, 6, pp. 52-55, (2014)
  • [2] Tan H., Li Y., Chen X., Et al., Influence of inverter-interfaced distributed generator with low-voltage ridethrough capability on short circuit current of distribution network, Electric Power Automation Equipment, 35, 8, pp. 31-37, (2015)
  • [3] Zhao Z., Yang P., Cai Z., Et al., Cooperative control of transient voltage stability for islanded medium-voltage microgrid with wind power, Electric Power Automation Equipment, 35, 10, pp. 1-9, (2015)
  • [4] Wang H., Lin G., Qiu J., Et al., Improvement of low voltage ride-through capability of wind farms by use of series dynamic braking resistors, Automation of Electric Power Systems, 32, 18, pp. 81-85, (2008)
  • [5] Tang F., Liu T., Li X., Improving transient stability of wind farm consisting of fixed speed induction generator by series connected dynamic braking resistors, Power System Technology, 34, 4, pp. 163-167, (2010)
  • [6] Muyeen S.M., A combined approach of using an SDBR and a STATCOM to enhance the stability of a wind farm, IEEE System Journal, 9, 3, pp. 922-932, (2015)
  • [7] Li R., Wang Q., Lu Y., Et al., Impact of Crowbar resistance on low voltage ride through of DFIG, Electric Power Automation Equipment, 34, 4, pp. 101-107, (2014)
  • [8] Li S., Xu Z., Range and group strategy of dump resistance for direct-drive permanent magnet synchronous generators, Power System Technology, 37, 7, pp. 1868-1873, (2013)
  • [9] Li S., An R., Xu Z., Et al., Coordinated LVRT of IG and PMSG in hybrid wind farm, Electric Power Automation Equipment, 35, 2, pp. 21-27, (2015)
  • [10] Technical guideline: generating plants connected to the medium-voltage network, (2008)
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