Construction method of optimal dispatch model for variable-speed pumped-storage units in regional power grid
A technology of pumped storage unit and pumped storage power station, which is applied in the field of electric power system
Active Publication Date: 2022-07-22
NR ELECTRIC CO LTD +1
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
There are many studies on variable-speed pumped storage units at home and abroad, but the coordinated control strategy and optimal dispatch of variable-speed pumped-storage units and new energy sources need to be further deepened.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The technical solutions and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.
[0018] The invention provides a method for constructing an optimal dispatch model of a variable-speed pumped-storage unit in a regional power grid, such as image 3 As shown, the variable-speed pumped-storage unit involved is different from the traditional thermal power unit, and can be used as both a power source and a load in the power system; the model construction method provided by the present invention adopts the method of capacity division to establish a variable-speed pumped-storage unit. The multi-application mode optimization configuration model of the power station throughout the day, the model specifically includes two parts: optimization objectives and constraints.
[0019] 1) Objective function
[0020] The optimal dispatch model of the variable speed pumped storage unit in the regional power grid takes t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for constructing an optimal dispatch model of a variable-speed pumped-storage unit in a regional power grid. The method of capacity division is used to establish an all-day multi-application mode optimal configuration model of a variable-speed pumped-storage power station, and the optimization goal of the model is the minimum system economy. The construction of cost and constraints includes frequency regulation and reserve reserve capacity constraints for variable speed pumped storage units, frequency regulation and reserve reserve energy constraints for variable speed pumped storage units, and power-electricity equation constraints; in the construction of the dispatch model, variable speed is mainly considered. Pumped hydro power constraints, electric energy constraints, power-electrical energy conversion loss constraints, ramp constraints and reserve constraints for pumped storage units. This model construction method can provide a refined adjustment method for power grid peak regulation and frequency regulation, and improve the safe and stable operation level and resource utilization of the power grid.
Description
technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to an optimal dispatching model of a variable-speed pumped-storage unit in a regional power grid. Background technique [0002] With the large-scale access of intermittent renewable energy sources such as wind power and photovoltaic power generation and the large-scale operation of core power in the power grid, the safe and stable operation of the power grid faces huge challenges, and the frequency control of the power grid, especially at night, becomes more difficult. . The high requirements of power grid frequency control and the lack of frequency control means (especially the lack of refined control means) form a pair of contradictions. The traditional fixed-speed pumped storage unit cannot adjust the power under pumping conditions, which affects the fineness of the frequency adjustment of the power grid to a certain extent, and also affects the consumption leve...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
CPCH02J3/46
Inventor 钟高跃石祥建施一峰谢欢闫伟詹亚曙吴涛贺亚凯李善颖马彦峰檀政李建鸿黄天啸
Owner NR ELECTRIC CO LTD