An active distribution network multi-stage planning method

An active distribution network, multi-stage technology, used in the field of power systems

Active Publication Date: 2019-03-22
STATE GRID ZHEJIANG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the existing grid planning methods considering operational factors still need to be improved

Method used

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  • An active distribution network multi-stage planning method
  • An active distribution network multi-stage planning method
  • An active distribution network multi-stage planning method

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Embodiment

[0064] The present invention proposes a multi-stage planning method for an active distribution network that takes into account multi-time-scale operation constraints, such as figure 1 As shown, its implementation process includes the following detailed steps:

[0065] Step 1. According to the operation business process and historical data of the power system, a multi-time-scale distribution network complex operation scenario library is formed considering various uncertain factors such as load demand, distributed power installed capacity, fan output, and photovoltaic output;

[0066] The complete set of distribution network operation scenarios has different uncertainties and regularities at different time scales, and correspondingly, the distribution network dispatching operation modes are also different.

[0067] The prediction of annual load development and DG access scale has significant randomness. Correspondingly, the operation mode of the distribution network in the long-...

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Abstract

The invention discloses an active distribution network multi-stage planning method. How to comprehensively consider the uncertainty of source-load network storage in distribution network planning is aproblem that needs to be studied in-depth. The invention comprises the following steps: inputting power system parameters, historical operation data, regional development planning demand and predicted uncertain factor data; Calculating the shadow price of each planning decision quantity in each running scenario with multi-time scales; According to the shadow price and the occurrence probability of each scene, establishing the running constrained scene library including extreme scenes and classical scenes. According to the constrained scenario library, modifying the upper-level multi-stage planning optimization model. The invention screens out the planning scene database with pertinence and typicality to revise the optimization model of planning investment, which is used to simulate the feedback of the operation decision-maker to the planning decision-maker, thereby improving the observability of the massive operation scene result of the distribution network, hierarchically solving thedecision variables of different time scales, and reducing the solution difficulty.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a multi-stage planning method for an active distribution network that takes into account multi-time-scale operation-limited scenarios. Background technique [0002] In recent years, the introduction of new technologies in power distribution systems such as distributed power sources, energy storage systems, and energy Internet has promoted the clean and diversified development of electric energy sources; the gradual penetration of flexible loads, electric vehicles, energy storage, and other forms of power demand has promoted It guarantees the marketization and interactive development of power distribution system, and has important application value and promotion significance. In order to introduce a large number of the above multiple elements into the distribution network and organically integrate them to achieve safe, reliable, high-quality, efficient, and intelligent power services,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCG06Q10/04G06Q10/0637G06Q50/06Y02E60/00Y04S10/50Y04S40/20
Inventor 陈飞王蕾戴攀张西竹王坤黄晶晶刘曌煜胡哲晟
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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