Maximum supply capacity evaluation method of distribution networks based on mixed integer linear programming
A technology of maximum power supply capacity and linear programming, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems that cannot fully reflect the power flow changes of the distribution network, cannot identify weak links in the power supply of the distribution network, and difficult distribution networks Comprehensive evaluation of power supply capacity and other issues, to achieve the effect of reducing the difficulty of rapid solution, improving convergence, and wide application
Active Publication Date: 2018-12-21
SHENZHEN POWER SUPPLY BUREAU +1
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However, the current modeling and calculation method of the maximum power supply capacity is complex and cannot fully reflect the power flow changes of the distribution network in the N-1 process, and it is difficult to comprehensively evaluate the power supply capacity of the distribution network in the N-1 process, and it is impossible to Comprehensive identification of weak links in power supply of distribution network
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[0058] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0059] In order to illustrate the technical solution of the present invention, the following will be described through specific embodiments in conjunction with the accompanying drawings.
[0060] Such as figure 1 Shown is a method for evaluating the maximum power supply capacity of a distribution network based on mixed integer linear programming proposed by an embodiment of the present invention....
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The invention discloses a distribution network maximum power supply capacity evaluation method based on mixed integer linear programming, comprising the following steps: 1) the feeder division of thedistribution network is equivalently modeled, the short branch on the feeder in the distribution network is equivalent to a load node, and the load nodes on the same feeder section are merged; 2) topology modeling is carried out on the equivalent distribution network, wherein the line disconnection is expressed by an integer 0 and the line connection is expressed by an integer 1; 3) an objective function of a maximum supply capacity evaluation method of a distribution network is constructed, 4) a constraint condition is constructed, wherein the constraint condition includes topology constraints of a maximum supply capacity evaluation method of a distribution network, distribution network operation load flow constraints, feeder N-1 Fault Safety Constraint, Transformer N-1 Failure safety constraint; 5) The objective function and constraint conditions are integrated and solved to evaluate the maximum power supply capacity of distribution network.
Description
technical field [0001] The invention relates to the evaluation of power supply capacity of a distribution network, in particular to a method for evaluating the maximum power supply capacity of a distribution network based on mixed integer linear programming. Background technique [0002] As a link between the transmission network and users, the distribution network plays the role of distributing electric energy. Its characteristics of directly facing users determine the importance of the distribution network to ensure the safety and reliability of power supply. With the advancement of distribution network automation, after a fault occurs in the distribution network, the load affected by the fault can be quickly transferred to the tie line or other substations through automation equipment, which provides the possibility of mining the power supply capacity of the distribution network. The rationality, adequacy and flexibility of the topology of the distribution network can be ...
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Login to View More IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 徐笑阳浩舒舟程卓廖威李志铿孙浩张磊
Owner SHENZHEN POWER SUPPLY BUREAU