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Muiti-stage active distribution network self-healing planning method based on bi-level planning

An active distribution network, multi-stage technology, applied in the power grid field, can solve problems such as the impact of traditional distribution network expansion planning

Active Publication Date: 2016-03-16
ECONOMIC TECH RES INST OF STATE GRID ANHUI ELECTRIC POWER +1
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  • Abstract
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Problems solved by technology

Obviously, the integration of DER will have a great impact on the expansion planning of traditional distribution network

Method used

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  • Muiti-stage active distribution network self-healing planning method based on bi-level planning
  • Muiti-stage active distribution network self-healing planning method based on bi-level planning
  • Muiti-stage active distribution network self-healing planning method based on bi-level planning

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Embodiment

[0193] In an embodiment of the present invention, the self-healing planning model of the active distribution network may use a genetic algorithm for outer planning, and an interior point method for inner planning. refer to figure 2 As shown, the program flow includes the following steps:

[0194] (1) Input network parameters and initial calculation parameters

[0195] (2) Generate initial population

[0196] (3) Get the reconstructed network for the contemporary population

[0197] (4) Calculate the optimal power flow

[0198] (5) Get the optimal value of DG output and load reduction

[0199] (6) Calculate the net present value of individual investment in contemporary populations

[0200] (7) Calculation of power supply reliability index of grid

[0201] (8) Calculate the fitness function

[0202] (9) Judging whether the convergence condition is reached

[0203] The decision variables and constraint items of the inner planning and outer planning generate an active dis...

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Abstract

The present invention discloses a muiti-stage active distribution network self-healing planning method based on bi-level planning. The method comprises the following steps: carrying out investigation and analysis on a planned region, and determining a planning target and a decision variable; listing objective functions according to the planning target and the decision variable, wherein, an external planning objective function is a net present value, and an internal planning objective function comprises a DG reduction amount and an active load reduction amount; listing an external planning bound term and an internal planning bound term; generating an active distribution network self-healing planning model according to the internal planning objective function, the external planning objective function and the related constraint terms; and optimizing the active distribution network self-healing planning model and then carrying out calculation to obtain an optimal decision. According to the muiti-stage active distribution network self-healing planning method based on bi-level planning, which is disclosed by the present invention, long-term investment cost and short-term operating economy of an active distribution network are fully considered, thereby improving asset utilization rates of an energy storage system and a line in a grid to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a multi-stage active distribution network self-healing planning method based on two-layer planning. Background technique [0002] Distribution network expansion planning is an important research field in power system planning. In recent years, the ADN (Active Distribution Network) concept proposed by CIGRE in 2006 has become the focus of many scholars in the field of power planning. An important feature of ADN is that the integrated control system controls various forms of DER (DistributedEnergyResources, distributed energy), such as DG (DistributedGeneration, distributed generation), CL (ControllableLoad, controllable load) and ESS (EnergyStorageSystem, energy storage system). Obviously, the integration of DER will have a great impact on the expansion planning of traditional distribution network. Traditional distribution network planning can be divided into: substation pl...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCY04S10/50
Inventor 叶斌王绪利周贤正郭创新葛斐代磊沈俭荣任曦骏程啸李万启张伊宁
Owner ECONOMIC TECH RES INST OF STATE GRID ANHUI ELECTRIC POWER
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