Power distribution network new energy consumption capability evaluation method considering multiple risk factors

A technology of risk factors and absorptive capacity, applied to AC networks, electrical components, circuit devices, etc. with the same frequency from different sources, can solve problems such as harmonics exceeding the standard, voltage exceeding the limit, etc.

Active Publication Date: 2020-09-04
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +2
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Problems solved by technology

On the one hand, the access of distributed new energy will bring many advantages to the distribution network, such as increasing the voltage of the heavy-duty system and making the operation control of the distribution network more flexible; on the other hand, due

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  • Power distribution network new energy consumption capability evaluation method considering multiple risk factors
  • Power distribution network new energy consumption capability evaluation method considering multiple risk factors
  • Power distribution network new energy consumption capability evaluation method considering multiple risk factors

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Embodiment Construction

[0073] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0074] Such as figure 1 As shown, the present invention provides a method for evaluating the new energy consumption capacity of distribution network considering multiple risk factors, including the following steps:

[0075] S1: Obtain data related to distribution network load and grid structure, and establish a stochastic model of load and distributed new energy (photovoltaic, wind power) output.

[0076] According to statistical experience, the active power and reactive power of loads in a period of time obey the normal distribution, the light intensity obeys the Beta distribution, and the wind speed obeys the Weibull distribution.

[0077] S2: Establish a distribution network probabilistic power flow calculation model based on the semi-invariant method, and use the model and data in step S1 to obtain the probability density function and prob...

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Abstract

The invention discloses a power distribution network new energy consumption capability evaluation method considering multiple risk factors. The method comprises the following steps: establishing a load and distributed new energy output random model; establishing a probability density function and a probability distribution function of the state variable of the power distribution network based on asemi-invariant method; constructing a power distribution network operation safety risk evaluation index system; constructing a power distribution network operation economy risk evaluation index system in a typical scene; converting an economic operation risk index of the typical scene based on the conditional risk value; constructing a new energy consumption objective function of the power distribution network by taking the maximization of the digestible distributed new energy power as an objective; and constructing a power distribution network new energy consumption constraint condition considering multiple risk factors, and solving a new energy consumption optimization problem. According to the method, the random characteristics of the new energy can be processed, the multi-dimensionaland multi-level risk evaluation index system is utilized, the operation safety and economy requirements of the power distribution network are considered, and evaluation of the new energy consumption capability is realized.

Description

technical field [0001] The invention belongs to the field of distribution network optimization, and in particular relates to a method for evaluating the new energy consumption capacity of a distribution network considering multiple risk factors. Background technique [0002] Under the background of globalization of economic development and globalization of climate change, the distribution network is developing in the direction of diversification, sustainability and environmental protection, and the use of traditional petrochemical energy has entered a bottleneck period. In recent years, the proportion of primary energy used in the power system has decreased, and more and more distributed new energy sources have been gradually connected to the distribution network system. New energy power generation has effectively improved the environmental pollution problems faced by traditional power generation links. On the one hand, the access of distributed new energy will bring many ad...

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Application Information

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IPC IPC(8): H02J3/00H02J3/06H02J3/38
CPCH02J3/00H02J3/06H02J3/381H02J2203/10H02J2203/20H02J2300/22H02J2300/28Y04S10/50
Inventor 甘雯刘丽詹锐烽沈诚亮黄继华林承钱徐国华陈丽娟
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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