Long-Term Voltage Stability Bifurcation Analysis and Control Considering OLTC Adjustment and Photovoltaic Power Station

被引:4
作者
Li, Sheng [1 ]
Zhang, Can [1 ]
Zuo, Jili [1 ]
机构
[1] Nanjing Inst Technol, Sch Elect Power Engn, Nanjing 211167, Peoples R China
关键词
photovoltaic (PV); long-term voltage stability; voltage collapse; OLTC; supercritical Hopf bifurcation (SHB); SYSTEM; GENERATION; DESIGN;
D O I
10.3390/en16176383
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The influence of photovoltaic (PV) output with stochasticity and uncertainty on the grid-connected system's voltage stability is worth further exploration. The long-term voltage stability of a 3-bus system with a large-scale PV power station considering the adjustment of an on-load tap changer (OLTC) was studied. In this typical system, two supercritical Hopf bifurcation (SHB) points are found using the bifurcation calculation. At the SHB point that appears first, a small sudden increase in reactive load power or a sudden increase in PV active power Ppv can eventually cause a voltage collapse after a long increasing oscillation. The long-term collapse phenomenon shows that SHB cannot be ignored in the PV grid-connected system. Meanwhile, the time constant of OLTC can affect the progress of long-term voltage collapse, but it has different effects under different disturbances. When Ppv drops suddenly at the SHB point, due to the adjustment of OLTC, the load bus voltage can recover to near the target value of OLTC after a long period of time. Similarly, the time constant of OLTC can affect the progress of long-term voltage recovery. To prevent the long-term voltage collapse when Ppv increases suddenly at the SHB point, a new locking-OLTC index Ilock, depending on the value of Ppv corresponding to the SHB point, and a locking OLTC method are proposed, and the voltage can be recovered to an acceptable stable value quickly. Compared with the system without OLTC, OLTC adjustment can effectively prevent long-term voltage oscillation instability and collapse, so that PV power can play a bigger role in power systems.
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页数:17
相关论文
共 33 条
[1]  
Bao Lixin, 2000, Journal of Huazhong University of Science and Technology, V28, P61
[2]   A Data-Based Learning and Control Method for Long-Term Voltage Stability [J].
Cai, Huaxiang ;
Ma, Haomin ;
Hill, David J. .
IEEE TRANSACTIONS ON POWER SYSTEMS, 2020, 35 (04) :3203-3212
[3]   Linear performance indices to predict oscillatory stability problems in power systems [J].
Cañizares, CA ;
Mithulananthan, N ;
Milano, F ;
Reeve, J .
IEEE TRANSACTIONS ON POWER SYSTEMS, 2004, 19 (02) :1104-1114
[4]  
Cutsem T.V., 1998, Voltage Stability of Electric Power Systems, P153
[5]   Machine Learning Based Real-Time Monitoring of Long-Term Voltage Stability Using Voltage Stability Indices [J].
Dharmapala, Kalana Dulanjith ;
Rajapakse, Athula ;
Narendra, Krish ;
Zhang, Yi .
IEEE ACCESS, 2020, 8 :222544-222555
[6]  
Duan Xianzhong, 1995, Automation of Electric Power Systems, V19, P14
[7]   Power Flow and Stability Analyses of a Multifunctional Distributed Generation System Integrating a Photovoltaic System With Unified Power Quality Conditioner [J].
Garcia Campanhol, Leonardo Bruno ;
Oliveira da Silva, Sergio Augusto ;
de Oliveira, Azauri Albano ;
Bacon, Vinicius Dario .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2019, 34 (07) :6241-6256
[8]  
General Administration of Quality Supervision Inspection and Quarantine of the Peoples Republic of China Standardization Administration of the Peoples Republic of China, 2019, Code on Security and Stability for Power System (GB 387552019), P13
[9]   Challenges of developing a power system with a high renewable energy proportion under China's carbon targets [J].
Guo, Jianbo ;
Ma, Shicong ;
Wang, Tiezhu ;
Jing, Yiran ;
Hou, Weilin ;
Xu, Haotian .
IENERGY, 2022, 1 (01) :12-18
[10]   Coordinated Decentralized Emergency Voltage and Reactive Power Control to Prevent Long-Term Voltage Instability in a Power System [J].
Islam, Sk Razibul ;
Sutanto, D. ;
Muttaqi, K. M. .
IEEE TRANSACTIONS ON POWER SYSTEMS, 2015, 30 (05) :2591-2603