Optimal management method for active distribution network power quality

A technology for active distribution network and power quality, applied in electrical components, circuit devices, AC network circuits, etc., and can solve problems such as voltage imbalance and harmonic pollution.

Active Publication Date: 2019-02-15
ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to take into account the harmonic pollution and voltage unbalance level in the active distribution network at the same time, and to face the problem of renewable energy accessing the active distribution network How to optimize the management of power quality in active distribution network

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  • Optimal management method for active distribution network power quality
  • Optimal management method for active distribution network power quality
  • Optimal management method for active distribution network power quality

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Embodiment Construction

[0083] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0084] In order to ensure the power quality level of the distribution network, this scheme establishes an optimal distribution network operation model, which takes minimizing the network power loss in the prediction time domain as the optimization goal, and takes the conditions related to power quality and system safe operation as constraints, details as follows.

[0085] A method for optimal management of power quality in an active distribution network, comprising the following steps:

[0086] Step 1. Establish an optimal management model for the power quality of the active distribution network in t...

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Abstract

The invention discloses an optimal management method for active distribution network power quality, and relates to the field of power grid optimal management. The method comprises the following steps:step one, establishing an optimal management model for active distribution network power quality inside a prediction horizon, wherein the optimal management model takes the minimization for network power loss inside the prediction horizon as an optimal object and takes conditions related to power quality and system safety operation as constraint conditions; step two, solving the optimal management model by using a cuckoo algorithm so as to obtain an optimal management model result; and step three, based on the optimal management model result, coordinating with model prediction control with feedback characteristics to alleviate the influence caused by uncertain problems. According to the optimal management method for active distribution network power quality provided by the invention, thepower loss caused by harmonic waves can be reduced effectively, an obtained dispatching plan also considers the factor of power quality, and the influence of uncertain problems is reduced by using model prediction control.

Description

technical field [0001] The invention relates to the field of power grid optimization management, in particular to an optimization management method for power quality of an active distribution network. Background technique [0002] As an important part of smart grid, distributed generation (Distributed Generation, DG) and energy storage (Energy Storage, ES) have received more and more attention in many countries. Navigant Research Institute predicts that compared with the 87.3GW DG installed capacity in 2014, the DG installed capacity in 2023 will exceed 165GW. In addition, by 2025, China's ES market will reach US$8.7 billion and 31GWh, which is three times the ES market in 2015. DG and ES can bring many benefits to the power system, for example, DG can reduce power loss, thereby reducing the corresponding equipment investment. ES can integrate renewable types of DG such as wind turbines into the power system. However, since DG and ES are connected to the distribution netw...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20Y04S10/50
Inventor 张爱祥宋士瞻王传勇周荣奎张健康文文王坤李森杨凤文代二刚周晓倩
Owner ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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