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Distributed photovoltaic power supply output multi-objective optimization scheduling method

A distributed photovoltaic, multi-objective optimization technology, applied in the direction of photovoltaic power generation, electrical components, circuit devices, etc., can solve problems affecting distribution network network loss, hidden dangers of power grid safe operation, power fluctuation of distribution network, etc.

Active Publication Date: 2017-12-08
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

[0002] Since the distributed photovoltaic power supply is easily interfered by other factors such as temperature and light intensity, when it is connected to the distribution network of the power system, it will cause power fluctuations in the distribution network and bring hidden dangers to the safe operation of the power grid.
At the same time, when distributed photovoltaic power sources are widely connected to the distribution network, it will have a huge impact on the power flow of the distribution network and the power of the transmission line, which in turn will affect the network loss of the distribution network, resulting in heating, aging and even possible It will cause disasters such as short circuit of distribution network and large-scale paralysis.
On the other hand, phenomena such as heating and aging of transmission lines will cause huge waste of resources

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  • Distributed photovoltaic power supply output multi-objective optimization scheduling method
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  • Distributed photovoltaic power supply output multi-objective optimization scheduling method

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Embodiment Construction

[0069] The present invention will be further explained by specific examples below.

[0070] Such as figure 2 As shown, a multi-objective optimal scheduling method for distributed photovoltaic power output provided by an embodiment of the present invention includes the following steps:

[0071] Step 1: Establish a mathematical model of distributed photovoltaic power output:

[0072] Photovoltaic power generation will be affected by light intensity and ambient temperature, so its production capacity is uncertain. In order to consider the dynamic characteristics of photovoltaic power generation, the load of the node is monitored in real time through the sensors arranged at each node. At the same time, the 12-hour time period from 7:00 am to 7:00 pm is selected for data research. Hours, there are n photovoltaic nodes in total.

[0073] Under reference conditions (the temperature is 25°C and the total solar radiation received is 1kW / ㎡), the relationship between the output curre...

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Abstract

The invention relates to a distributed photovoltaic power supply output multi-objective optimization scheduling method. The illumination intensity, the temperature and other parameters of a distributed photovoltaic power supply are monitored in real time, and the power load and the output power of the distributed photovoltaic power supply are predicted through a prediction algorithm. Meanwhile, a multi-objective index evaluation function is established to perform optimization scheduling on the distributed photovoltaic power supply output so that the phenomena of network loss and power fluctuation caused by the fact that the distributed photovoltaic power supply is extensively accessed to the power distribution network can be effectively avoided, and the operation reliability and effectiveness of the regional power grid can be enhanced.

Description

technical field [0001] The invention relates to the technical field of photovoltaic grid-connected power generation, in particular to a multi-objective optimal scheduling method for distributed photovoltaic power output. Background technique [0002] Since the distributed photovoltaic power supply is easily interfered by other factors such as temperature and light intensity, when it is connected to the distribution network of the power system, it will cause power fluctuations in the distribution network and bring hidden dangers to the safe operation of the power grid. At the same time, when distributed photovoltaic power sources are widely connected to the distribution network, it will have a huge impact on the power flow of the distribution network and the power of the transmission line, which in turn will affect the network loss of the distribution network, resulting in heating, aging and even possible It will cause disasters such as short circuit of distribution network a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/003H02J3/383H02J2203/20Y02E10/56
Inventor 张智俊李敬兆
Owner ANHUI UNIV OF SCI & TECH
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