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Reactive power and voltage optimization analysis and evaluation method based on distribution network automation

A distribution network automation and voltage optimization technology, applied in data processing applications, system integration technology, forecasting, etc., can solve problems such as unreasonable equipment configuration of the power grid, high cost of power grid erection, and inability to analyze and evaluate reactive power and voltage of the distribution network. Achieve the effects of improving power factor and distribution network reactive power voltage management and automation level, improving power quality, and improving power supply reliability

Active Publication Date: 2017-10-24
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] The reactive power and voltage optimization analysis and evaluation method based on distribution network automation provided by the present invention aims to overcome the shortcomings of the inability to analyze and evaluate the reactive power and voltage of the distribution network in the prior art, resulting in unreasonable configuration of power grid devices and high cost of power grid erection

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  • Reactive power and voltage optimization analysis and evaluation method based on distribution network automation
  • Reactive power and voltage optimization analysis and evaluation method based on distribution network automation
  • Reactive power and voltage optimization analysis and evaluation method based on distribution network automation

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Embodiment Construction

[0046] An analysis and evaluation method for reactive power and voltage optimization based on distribution network automation. This method is based on the stochastic particle swarm optimization algorithm. The stochastic particle swarm optimization algorithm includes:

[0047] The objective function is to minimize the sum of the network loss cost and the total investment under the multi-load state as the objective function, and the formula is as follows:

[0048]

[0049] In the formula: N is the planned number of years; K p is the electricity price (10,000 yuan / kwh); S is the number of load states; t ikis the duration of the kth load state in the i-th year (h); P Lik Power consumption of the system under the kth load state in the i-th year (kw); Q i k , Respectively, the reactive power capacity and the adjustable transformer transformation ratio under the kth load state in the i-th year, H is the system node set; M j is the annual maintenance cost of the reactive powe...

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Abstract

The invention relates to a reactive voltage optimization analysis and assessment method based on distribution network automation. According to the reactive voltage optimization analysis and assessment method based on distribution network automation, a stochastic particle swarm optimization algorithm is adopted, and reasonable computation parameters and a reasonable computational formula are selected so that distribution network reactive voltage can be scientifically analyzed and assessed, power grid equipment is reasonably assembled, a power grid can achieve obvious loss-reduction and energy-saving effects, more current steaming probability can be provided while rear-end voltage is lowered, the power transmission ability is greatly improved, and the total capacity of a system is increased.

Description

technical field [0001] The invention relates to a reactive voltage optimization analysis and evaluation method based on distribution network automation. Background technique [0002] At present, the domestic distribution network automation system is in the preliminary stage. Most areas have built a distribution network automation system, and the data of each point of the distribution network has also been collected, but it is only a preliminary understanding of the operation level of the distribution network. The reactive power of the internal distribution network There are still serious deficiencies in voltage operation management level, equipment level, operation status, load capacity, etc.; specifically: 1. The distribution network line is too long, the number of branches is huge, the load changes constantly, the seasonality is obvious, and each distribution transformer Most of the unloaded transformers are used, resulting in the 10kV bus voltage control effect is not obv...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 叶伟宝杨劭炜陆文彪王炜吴哲叶昕颖邱佳杰雷娅吴桦吕春美
Owner STATE GRID CORP OF CHINA
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