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Voltage optimization method of distribution network generation predication technology based on Elman algorithm

A prediction technology and voltage optimization technology, applied in the field of distributed photovoltaics, can solve the problems of distribution network voltage fluctuations, affecting the power balance characteristics of the power grid, and grid bus voltage fluctuations.

Active Publication Date: 2016-10-26
NARI TECH CO LTD +5
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Problems solved by technology

[0002] The distribution network voltage fluctuation problem caused by distributed photovoltaic access to the distribution network needs to be solved urgently. As the main form of clean energy, the number of distributed power sources connected to the distribution network is increasing. On the one hand, distributed power sources are easy to install. , flexible power supply and other characteristics, can improve energy utilization efficiency, reduce pollutant emissions, improve power supply reliability, power quality and reduce network loss; Given the challenge, grid companies will face a large number of blowout, small-capacity, and decentralized distributed photovoltaic access, which will have a major impact on the security, stability and economic operation of local power grids: the fluctuations in distributed power generation after large-scale access Active power output affects the power balance characteristics of the grid, which in turn causes large fluctuations in the grid bus voltage

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  • Voltage optimization method of distribution network generation predication technology based on Elman algorithm
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  • Voltage optimization method of distribution network generation predication technology based on Elman algorithm

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0057] The present invention is a control strategy proposed based on active and reactive power regulation technology for voltage over-limit of the distribution network connected to the distributed photovoltaic. Considering that voltage regulators and static var compensators (SVC) are rarely connected to traditional reactive power compensation devices in the actual distribution network, in the face of voltage adjustment, starting from the distributed photovoltaic itself, let it participate in the adjustment The distribution network voltage is up. However, considering the particularity of distributed photovoltaics, the voltage fluctuations of the distribution network with distributed photovoltaics...

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Abstract

The present invention discloses a voltage optimization method of a distribution network generation predication technology based on an Elman algorithm. Based on a similar day selection algorithm and an Elman nerve network, the output power predication of a distributed photovoltaic power station can be completed, a control strategy with distributed photovoltaic distribution network voltage off limitation is advanced based on active and inactive coordination control, and an improved smart particle swarm optimization algorithm is employed to perform searching optimization calculation to complete the voltage optimization control of a power distribution network line, and therefore, the voltage optimization method of the distribution network generation predication technology based on the Elman algorithm has the applicability.

Description

Technical field [0001] The invention relates to a voltage optimization method of distribution network power generation prediction technology based on Elman algorithm, and belongs to the field of distributed photovoltaic technology. Background technique [0002] The distribution network voltage fluctuation problem caused by distributed photovoltaic access to the distribution network needs to be solved urgently. As the main form of utilization of clean energy, distributed power sources are increasingly connected to the distribution network. On the one hand, distributed power sources are easy to install. , Flexible power supply, etc., which can improve energy utilization efficiency, reduce pollutant emissions, improve power supply reliability, power quality, and reduce network losses; on the other hand, large-scale distributed photovoltaic access proposes to the safe and reliable operation of the future grid In response to the challenge, grid companies will face a large number of bl...

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/383H02J2203/20Y02E10/56
Inventor 陈春王丙文郭剑虹付明吴爽黄素娟吴婧妤李鹏
Owner NARI TECH CO LTD
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