Branch n-1 overload prevention control method, device and storage medium
A preventive control and branch circuit technology, applied in circuit devices, AC network circuits, electrical components, etc., can solve problems such as insufficient automation of overload preventive control, and achieve the effects of ensuring safety, avoiding control conflicts, and low control costs.
Active Publication Date: 2022-05-31
JIANGSU ELECTRIC POWER CO +2
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In order to solve the problem of insufficient automation of overload prevention and control in the prior art, the present invention proposes a branch N-1 overload prevention and control method, device and storage medium based on conditional section constraints, and prevents the overload of the entire network N-1 from Transform the control problem into a section power control problem, solve the preventive control optimization model in a given space or the global space, obtain closed-loop or open-loop control measures, and distribute the conditional section constraint set to SCADA, SCED and other systems to efficiently carry out overload prevention and control Real-time sharing of power grid security boundaries
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
[0044] Below in conjunction with accompanying drawing, technical scheme of the present invention is further described:
[0045] The invention proposes a branch N-1 overload prevention control method based on conditional section constraints. The operation period of the method is t, that is, the method of the invention runs once every t time, and performs data acquisition, state error, state estimation, etc. Operation, to complete the branch N-1 overload prevention control function, t should be greater than or equal to the time for the following steps of the method of the present invention to complete the calculation once.
[0046] like figure 1 , 2 As shown, the method of the present invention specifically comprises the following steps:
[0047] Step 1. Obtain power flow data, wherein the power flow data is the converged grid operation section data. When the grid operating section data converges, it is considered that the grid is in a normal operating state at this time, and w...
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 branch N-1 overload prevention and control method, device and storage medium based on conditional section constraints, aiming to solve the technical problem of insufficient automation of overload prevention and control. It includes: obtaining power flow data; performing N-1 fast scanning according to the power flow data to obtain the weak model set and the margin of the model; when the weak model set is empty, return to step 1, otherwise construct a conditional section constraint set based on the power flow transfer ratio; When the minimum margin in the weak mode set is less than the set value, the optimization model is obtained according to the conditional section constraint set, and the preventive control decision is obtained by solving the optimization model; the conditional section distribution is carried out. The invention can carry out online decision-making and collaborative defense of branch N-1 overload prevention control, realize real-time sharing of power grid safety boundaries, and obtain a prevention control scheme with lower control cost.
Description
technical field [0001] The invention relates to a branch N-1 overload prevention control method, device and storage medium based on conditional section constraints, belonging to the technical field of power system automation. Background technique [0002] As the first line of defense for the safe and stable operation of large power grids, preventive control moves the operating point from outside the stable domain to the inside of the stable domain before potential faults occur, without losing power and load, and corresponding to expected faults is the first level specified in the regulations Standard is not critically faulty. With the increasing complexity of power grid operation and the great changes in operating modes, conventional offline analysis and control can no longer meet the needs. Online adaptive optimization of preventive control has become an essential tool for power grid dispatching centers. For many reasons, such as parameters and algorithm calculation effici...
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): H02J3/00H02J3/06H02J3/46
CPCH02J3/00H02J3/06H02J3/466H02J2203/20H02J2203/10
Inventor 罗凯明张金龙周挺鲍颜红罗建裕徐伟刘林杨君军许晓彤严明辉陈峻楠涂旺
Owner JIANGSU ELECTRIC POWER CO