TY - JOUR
T1 - Pumping phase modulation analysis for operational quality of a pumped-storage generating system
AU - Li, Huanhuan
AU - Xu, Beibei
AU - Mahmud, Md Apel
AU - Chen, Diyi
AU - Zhang, Jingjing
N1 - Funding Information:
This work was supported by the scientific research foundation of National Natural Science Foundation of China Outstanding Youth Foundation (51622906), China and National Natural Science Foundation of China (51479173), China.
PY - 2019/11/1
Y1 - 2019/11/1
N2 - The integration of pumped-storage power with multi-energy sources pushes the electricity generation to concern about the voltage stability and reactive power balance. This study focuses on the effect of pumping phase modulation on the operational quality of the pumped-storage generating system. A precise mathematical model of the pumped-storage generating system with multiple units is presented, aiming at the analysis of dynamic performance and stability under the operating mode of the pumping phase modulation at timescale of seconds. The result reveals that the favorable capacity of leading phase modulation for unit 1 significantly decreases the release of reactive power of unit 2 owing to the effect of reactive power flow in different units. It is also obtained that the different amplitudes of external step disturbances cause the operation transition between the late phase and leading phase, while the random disturbances result in a fuzzy phase domain that refers to the obscure boundary of the leading & late phase modulation conditions in time domain (6.88 s, 10 s). The large disturbance decreases the leading phase depth of unit 1, which indirectly reduces the surplus reactive power absorbing of unit 2. The implemented method and results obtained from this method are beneficial to the risk mitigation and vibration diminishment of pumped-storage generating systems, which contributes to maximize the asset efficiency of pumped-storage power stations for generating electricity in multi-energy integration setups.
AB - The integration of pumped-storage power with multi-energy sources pushes the electricity generation to concern about the voltage stability and reactive power balance. This study focuses on the effect of pumping phase modulation on the operational quality of the pumped-storage generating system. A precise mathematical model of the pumped-storage generating system with multiple units is presented, aiming at the analysis of dynamic performance and stability under the operating mode of the pumping phase modulation at timescale of seconds. The result reveals that the favorable capacity of leading phase modulation for unit 1 significantly decreases the release of reactive power of unit 2 owing to the effect of reactive power flow in different units. It is also obtained that the different amplitudes of external step disturbances cause the operation transition between the late phase and leading phase, while the random disturbances result in a fuzzy phase domain that refers to the obscure boundary of the leading & late phase modulation conditions in time domain (6.88 s, 10 s). The large disturbance decreases the leading phase depth of unit 1, which indirectly reduces the surplus reactive power absorbing of unit 2. The implemented method and results obtained from this method are beneficial to the risk mitigation and vibration diminishment of pumped-storage generating systems, which contributes to maximize the asset efficiency of pumped-storage power stations for generating electricity in multi-energy integration setups.
KW - Dynamic performance
KW - Hydroelectric efficient utilization
KW - Late & leading phase modulations
KW - Pumped-storage power generation
KW - Pumping phase modulation
UR - http://www.scopus.com/inward/record.url?scp=85071548130&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2019.111989
DO - 10.1016/j.enconman.2019.111989
M3 - Article
AN - SCOPUS:85071548130
VL - 199
JO - Energy Conversion and Management
JF - Energy Conversion and Management
SN - 0196-8904
M1 - 111989
ER -
