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Calculation method and system of photovoltaic consumption capability of power distribution network

A technology of accommodating capacity and distribution network, applied in the field of distribution network, can solve the problems of large number of simulation scenarios and large calculation time consumption

Active Publication Date: 2015-08-12
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in this application is to provide a method and system for calculating the photovoltaic capacity of the distribution network, which solves the problem that a large number of photovoltaic grid-connected scenarios need to be simulated in order to obtain higher accuracy in the prior art, and the number of simulated scenarios is large. , the problem of large computational time consumption

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  • Calculation method and system of photovoltaic consumption capability of power distribution network
  • Calculation method and system of photovoltaic consumption capability of power distribution network
  • Calculation method and system of photovoltaic consumption capability of power distribution network

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Embodiment 1

[0112] Corresponding to the method provided in Embodiment 1 of the above-mentioned method for calculating the photovoltaic consumption capacity of a distribution network in the present application, see Figure 4 , the present application also provides a system embodiment 1 for calculating the photovoltaic accommodation capacity of a distribution network. In this embodiment, the system includes:

[0113] The first acquisition unit 401 is configured to acquire distribution network parameters, light intensity, ambient temperature and wind speed information.

[0114] The selection unit 402 is configured to select at least one random scene by using a Gaussian-like sampling method.

[0115] The first calculation unit 403 is configured to calculate the voltage amplitude of each node of the distribution network in each of the random scenarios according to the distribution network parameters, light intensity, ambient temperature and wind speed information, through the annual time serie...

Embodiment 2

[0121] see Figure 5 , the present application also provides a system embodiment 2 for calculating the photovoltaic accommodation capacity of the distribution network. In this embodiment, the selection unit includes:

[0122] The second determining unit 501 is configured to determine the number of distributed photovoltaic points that can be connected to the distribution network.

[0123] The third determining unit 502 is configured to determine the photovoltaic access location by using a Gaussian-like sampling method.

[0124] The third determination unit 503 is configured to determine the capacity of photovoltaic access of each node.

[0125] see Figure 6 , the present application also provides a system embodiment 3 for calculating the photovoltaic accommodation capacity of the distribution network. In this embodiment, after the selection unit, it also includes:

[0126] The second obtaining unit 601 is configured to obtain parameter information of photovoltaic inverters ...

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Abstract

The invention provides a calculation method of the photovoltaic consumption capability of the power distribution network. The method comprises that parameters of the power distribution network, illumination intensity, ambient temperature and wind speed information required by power flow calculation are obtained; at least one random scene is selected in a Gaussian-like sampling method; according to the parameters of the power distribution network, illumination intensity, ambient temperature and wind speed information, the voltage amplitude of each node of the power distribution network in each random scene is calculated in an annual sequential power flow algorithm; and a maximal photovoltaic installation capacity, which satisfies the constraint range of voltage safety, in a set of the voltage amplitudes is determined and serves as the photovoltaic consumption capability of the power distribution network. Thus, on the premise that the accuracy of calculation results is ensured, the calculation scale is reduced, and the calculation efficiency is improved.

Description

technical field [0001] The present application relates to the field of distribution networks, in particular to a method and system for calculating the photovoltaic accommodation capacity of a distribution network. Background technique [0002] With the development of technology, people have higher and higher requirements for the calculation method of photovoltaic consumption capacity of distribution network. [0003] In the existing method of calculating photovoltaic accommodation capacity of distribution network using Monte Carlo simulation method, in order to obtain higher accuracy, a large number of photovoltaic grid-connected scenario simulations are required. The number of simulated scenarios is large, and the calculation time is relatively large. [0004] Therefore, how to effectively calculate the photovoltaic accommodation capacity of the distribution network, obtain more accurate calculation results, reduce the calculation scale, and improve the calculation efficien...

Claims

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Application Information

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IPC IPC(8): H02J3/38G06F17/50G06Q50/06
CPCY02E10/56
Inventor 赵波徐志成张雪松王子凌周丹
Owner STATE GRID CORP OF CHINA
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