Energy storage determining method for improving adjusting capacity of new energy station and new energy supporting machine
A technology of regulation ability and new energy, applied in the direction of AC network circuit, single network parallel feeding arrangement, electrical components, etc., can solve the problems of insufficient regulation ability of new energy stations, and achieve good accuracy, low demand, and coverage high effect
Active Publication Date: 2021-02-19
CHINA ELECTRIC POWER RES INST
View PDF5 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] Aiming at the deficiencies of the prior art, the present invention provides an energy storage determination method, device, energy storage device and new energy supporting machine for increasing the adjustment capacity of new energy stations, so as to solve the problem of insufficient adjustment ability of new energy stations at present
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
[0034] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not limiting of the present invention. In the figures, the same units / elements are given the same reference numerals.
[0035] Unless otherwise stated, the terms (including scientific and technical terms) used herein have the meanings commonly understood by those skilled in the art. In addition, it can be understood that the terms defined by commonly used dictionaries should be understood as having consistent meanings in the context of their related fields, and should not be understood as idealiz...
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 an energy storage determining method for improving the adjusting capacity of a new energy station and a new energy supporting machine. The method comprises the steps of determining the frequency dynamic variation of a power system in an adjustment process according to obtained unbalanced power of a power grid at an initial moment of the adjustment process, frequency deviation of the power system, a system equivalent damping coefficient and a system equivalent inertia time constant; determining an active power reference value received by the energy storage device in theadjustment process according to the frequency dynamic variation of the power system in the adjustment process; determining the total energy absorbed by the energy storage device and the total energy released by the energy storage device participating in the adjustment process according to the active power reference value and the obtained duration of the adjustment process; and determining the capacity of the energy storage device according to the maximum value of the total energy absorbed by the energy storage device and the maximum value of the total energy released by the energy storage device in the process of participating in adjustment under different initial conditions. The method is high in coverage rate of a power grid operation profile; and the method has the advantages of low requirement on computing resources, high solving efficiency and good accuracy.
Description
technical field [0001] The invention relates to the technical field of power system operation and control, in particular to an energy storage determination method and a new energy support machine for increasing the adjustment capability of a new energy station. Background technique [0002] On August 9, 2019, there was a major power outage in the UK. The process is roughly as follows: For some reason, the Little Barford gas-fired power station in the North Sea grid was shut down. After the gas-fired power station is disconnected from the grid, the power generation load lost by the grid reduces the frequency of the power system. On the other hand, due to the insufficient ability of the wind turbines in the North Sea Power Grid to withstand low frequencies, the reduction in the frequency of the power system caused a large number of wind turbines to go off-grid, so the output of the wind farm dropped sharply, which further increased the power generation load lost by the power ...
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 Applications(China)
IPC IPC(8): H02J3/24H02J3/28H02J3/38
CPCH02J3/28H02J3/381H02J3/241
Inventor 孙华东李文锋郭剑波张健郭强李志强赵兵魏巍
Owner CHINA ELECTRIC POWER RES INST