Two-stage uncertain optimal scheduling of active distribution network considering operational risk

2016 ◽  
Author(s):  
Lei Dong ◽  
Can Zhao ◽  
Naishi Chen ◽  
Ye Li ◽  
Tianjiao Pu
Keyword(s):  
Distribution Network ◽  
Operational Risk ◽  
Optimal Scheduling ◽  
Two Stage ◽  
Active Distribution Network

scholarly journals Two-Stage Active and Reactive Power Coordinated Optimal Dispatch for Active Distribution Network Considering Load Flexibility

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5922
Author(s):  
Yu Zhang ◽  
Xiaohui Song ◽  
Yong Li ◽  
Zilong Zeng ◽  
Chenchen Yong ◽  
...  
Keyword(s):  
Real Time ◽  
Prediction Error ◽  
Reactive Power ◽  
Distribution Network ◽  
Constant Current ◽  
Economic Losses ◽  
Time Varying ◽  
Two Stage ◽  
Active Distribution Network ◽  
Active And Reactive Power

A high proportion of renewable energy connected to the power grid has caused power quality problems. Voltage-sensitive loads are extremely susceptible to voltage fluctuations, causing power system safety issues and economic losses. Considering the uncertainty factor and the time-varying characteristic, a linearized random ZIP model (constant impedance (Z), constant current (I), and constant power (P)) with time-varying characteristics was proposed. In order to improve the voltage quality of the voltage-sensitive loads in the day-here stage in an active distribution network (ADN), a linearized two-stage active and reactive power coordinated stochastic optimization model was established. The day-ahead active and reactive power coordination optimization was to smooth the large voltage fluctuation and develop a reserve plan to eliminate the unbalanced power caused by the prediction error in the day-here optimization. In the day-here real-time redispatch, the voltage was further improved by the continuous reactive power compensation device. Finally, the simulation results on the IEEE-33 bus system showed that the control strategy could better eliminate the unbalanced power caused by the prediction error and obviously improve the voltage of sensitive loads in the real-time stage on the premise of maintaining economic optimality.

Three-stage model based operational risk analysis of active distribution network

2016 ◽  
Author(s):  
Lei Dong Lei Dong ◽  
Can Zhao Can Zhao ◽  
Naishi Chen Naishi Chen ◽  
Zhihong Li Zhihong Li ◽  
Tianjiao Pu Tianjiao Pu
Keyword(s):  
Risk Analysis ◽  
Distribution Network ◽  
Operational Risk ◽  
Stage Model ◽  
Active Distribution Network ◽  
Model Based
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