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A construction method of the maximum power supply capacity model of active distribution network considering the economic dispatch of controllable power sources

A technology of maximum power supply capacity and active distribution network, applied in the direction of resources, computing, electrical components, etc., can solve the problem of not taking the influence of the maximum power supply capacity of active distribution network into account.

Inactive Publication Date: 2019-05-10
DALIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

Some existing models do not take into account the influence of the dispatch behavior of the active distribution network on the maximum power supply capacity

Method used

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  • A construction method of the maximum power supply capacity model of active distribution network considering the economic dispatch of controllable power sources
  • A construction method of the maximum power supply capacity model of active distribution network considering the economic dispatch of controllable power sources
  • A construction method of the maximum power supply capacity model of active distribution network considering the economic dispatch of controllable power sources

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Embodiment Construction

[0051] The following takes the improved IEEE33 node power distribution system as an example, such as image 3 As shown, the specific implementation process of the present invention is described in detail in combination with the technical scheme and accompanying drawings. Table 1 shows the installed capacity and intervention position of the IEEE33 node power distribution system connected to the distributed unit; Table 2 shows the active load of each node in the IEEE33 node power distribution system in the base state; Comparison of model calculation results; Table 4 and Table 5 respectively show the line load rate and node voltage obtained under the two models considering economic dispatch and not considering economic dispatch.

[0052] Table 1 Installed capacity of each distributed unit

[0053]

[0054] Table 2 Distribution system load table

[0055]

[0056] Table 3 Considering the maximum power supply capacity and cost of distribution system before and after economic...

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Abstract

The invention provides a method for constructing an active power distribution network maximum power supply capability model considering economic scheduling of a controllable power source and belongs to the technical field of safe operation of a power distribution system. The method comprises the following steps: 1) constructing an external-level optimization model, and according to an objective function of the external-level optimization model and distribution network safe operation constraint conditions, carrying out calculation through a primal-dual interior-point method to obtain a load growth factor lambda; 2) constructing an internal-level optimization model, determining optimum allocation of active power output of the controllable distributed power supply and obtaining a growth mode of the active power output of the controllable distributed power supply; and 3) combining the models obtained in the steps 1) and 2), and with the internal-level optimization model being as a constraint condition of the external-level optimization model, constructing a two-level optimization model. For operation characteristics of the active power distribution network, influence of economic scheduling operation thereof on maximum power supply capability is reasonably embodied by a mathematical expression, so that a maximum power supply capability value meeting economic operation requirements of the active distribution network can be obtained.

Description

technical field [0001] The invention belongs to the technical field of power distribution system scheduling operation, and relates to a method for modeling and solving the maximum power supply capacity of an active distribution network, in particular to the modeling problem of considering economic scheduling factors in the maximum power supply capacity. Background technique [0002] As a product of the advanced stage of the development of smart distribution network, active distribution network can manage power flow through flexible network topology, and realize active control and active management of distributed power connected to it. The difference between it and the traditional distribution network is that the active distribution network actively manages various distributed power sources and grid equipment at the level of the entire distribution network by means of relevant information communication means and two-way interaction between the grid and users, so as to realize ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
CPCG06Q10/0631G06Q50/06H02J3/00H02J2203/20Y02E40/70Y04S10/50
Inventor 周玮孙恺孙辉胡姝博彭飞翔
Owner DALIAN UNIV OF TECH
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