Operation Modeling of Power Systems Integrated with Large-Scale New Energy Power Sources

Abstract

Abstract:In the most current methods of probabilistic power system production simulation, the output characteristics of new energy power generation (NEPG) has not been comprehensively considered. In this paper, the power output characteristics of wind power generation and photovoltaic power generation are firstly analyzed based on statistical methods according to their historical operating data. Then the characteristic indexes and the filtering principle of the NEPG historical output scenarios are introduced with the confidence level, and the calculation model of NEPG's credible capacity is proposed. Based on this, taking the minimum production costs or the best energy-saving and emission-reduction effect as the optimization objective, the power system operation model with large-scale integration of new energy power generation (NEPG) is established considering the power balance, the electricity balance and the peak balance. Besides, the constraints of the operating characteristics of different power generation types, the maintenance schedule, the load reservation, the emergency reservation, the water abandonment and the transmitting capacity between different areas are also considered. With the proposed power system operation model, the operation simulations are carried out based on the actual Northwest power grid of China, which resolves the new energy power accommodations considering different system operating conditions. The simulation results well verify the validity of the proposed power system operation model in the accommodation analysis for the power system which is penetrated with large scale NEPG.

Research on large-scale wind power utilization technology based on energy storage

“…When the wind power output is large and the electric load is low, the battery is charged，and when the electric load is high, the battery is discharged. At the same time, the configuration of large-capacity heat storage equipment in the thermoelectric system can break the rigid constraint of "electricity power based on heat", effectively improve the regulation capacity of the cogeneration unit, and increase the utilization of wind power [6][7][8]. In this paper, the characteristics of cogeneration, electricity storage and heat storage equipment are analyzed, then the wind power utilization model of thermoelectric system operation is constructed.…”

Chinese Electric Power Development Coordination Analysis on Resource, Production and Consumption: A Provincial Case Study

“…The electric power coupling degree between resource side and production side C (R,P) and the one between production side and consumption side C (P,C) can be calculated via Equation (12). The calculation results of coupling degrees are shown in Equation (16).…”

“…Taking the coupling degree between electric power resource and electric power production as an example, the coupling degree model can de constructed via Equation (12).…”

“…This paper adopts a new perspective to explore China's power industry development level based on the power industrial supply and demand situations from resource, production and consumption sides [11][12][13][14]. To evaluate the development level of electric power industry in China, typical factors are selected to present the features in each industrial chain link.…”

How Can China Achieve Its Nationally Determined Contribution Targets Combining Emissions Trading Scheme and Renewable Energy Policies?

“…Figure 8 shows that with the increase of the RES subsidy rate, the GDP change in central regions experiences a significant loss of 0.05% under Sa5, from an increase of 0.01% under scenario Sa0. For example, the GDP in Shanxi, a central region rich in coal with high potential for wind power [49,50], increases 0.078%, 0.058%, and 0.029% under scenarios Sa0, Sa1, and Sa2 respectively. GDP in Shanxi decreases by 0.006 to 0.094% under scenarios Sa3 to Sa5.…”