Unlock instant, AI-driven research and patent intelligence for your innovation.

A Calculation Method of Probabilistic Energy Flow in Integrated Energy System

A technology of an integrated energy system and a calculation method, which is applied in the field of probabilistic energy flow calculation of an integrated energy system, can solve the problems of the uncertainty of the new energy power system, the uncertainty of the integrated energy system, the fluctuation of the gas network load, etc. The effect of solving accuracy and calculation efficiency, reducing calculation complexity and amount of calculation, and reducing calculation error

Active Publication Date: 2021-09-07
XI AN JIAOTONG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The integrated energy system can integrate various forms of energy, so there are inevitably reliability problems: the access of new energy has brought great uncertainty to the power system; the gas network load also has certain fluctuations and uncertainties. deterministic, and various forms of energy coupling will also bring uncertainty to the integrated energy system
[0006] To sum up, most of the current methods have problems of calculation speed and calculation accuracy. This patent proposes a fast point estimation method that combines Nataf transformation and considers boundary constraints to study the probabilistic energy flow problem of integrated energy systems. Effectively improve the solution accuracy and calculation efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Calculation Method of Probabilistic Energy Flow in Integrated Energy System
  • A Calculation Method of Probabilistic Energy Flow in Integrated Energy System
  • A Calculation Method of Probabilistic Energy Flow in Integrated Energy System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0275] The comprehensive energy system of the calculation example of the present invention is as figure 1 As shown, the wind speed of the wind power system satisfies the Weibull distribution, and the light intensity of the solar system satisfies the Beta distribution. Assume that the wind speed is a normal wind speed (8.5m / s), and the gas grid load 3 is a fluctuating load, which satisfies a normal distribution. The wind speed distribution, power generation function, and photovoltaic light intensity satisfy the following relationship:

[0276]

[0277]

[0278] f(x)=20(x) 2 (1-x)0≤x≤1

[0279] Use Nataf transformation to add correlation to the sample, image 3 It is the distribution map between samples after Nataf transformation. From image 3 In (a), it can be seen that the correlation between fan 1 and fan 2 is 0.32, that is, ρ 12 =0.32, it can be seen from Figure (b) that the correlation between fan 1 and fan 3 is 0.45, that is, ρ 13 =0.45, as can be seen from Figu...

Embodiment 2

[0288] The comprehensive energy system of the calculation example of the present invention is still as figure 1 As shown, the wind speed of the wind power system satisfies the Weibull distribution, and the light intensity of the solar system satisfies the Beta distribution. At this time, the weather is in a windless state, the wind speed is abnormal (7.14m / s), and the air network load 3 is a fluctuating load. Satisfying the normal distribution, the wind speed distribution of the wind power system, the power generation function, and the photovoltaic light intensity satisfy the following relationship:

[0289]

[0290]

[0291] f(x)=20(x) 2 (1-x)0≤x≤1

[0292] Through the simulation calculation, the multi-point estimation results can be obtained as Figure 7 shown, from Figure 7 In (a), (b), (c), and (d), it can be seen that the 2-point estimation and the 3-point estimation have relatively low accuracy due to the existence of estimated points that exceed constraints. T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A calculation method for the probabilistic energy flow of an integrated energy system. Probabilistic modeling is carried out on wind power generation units, photovoltaic power generation units and gas network loads to obtain wind power generation probability models, photovoltaic output models and gas network load probability models. According to the wind power generation probability models, The photovoltaic output model and the gas network load probability model are sampled, and the Nataf transformation is used to add correlation to the probability sampling samples, and then point estimation is performed on the sampling samples, and the steady-state energy flow of the comprehensive energy system can be solved according to the obtained estimated points. The invention comprehensively considers the wind energy, solar energy in the power system and the uncertainty of the gas load in the natural gas system, and establishes a practical model for calculating the probability energy flow. Considering the correlation between different wind power generation and different solar power generation in reality, the Nataf transformation is used to solve the comprehensive energy flow problem in the comprehensive energy system, and the solution accuracy and calculation efficiency are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive energy system reliability and specifically designs a calculation method for the probability energy flow of the comprehensive energy system. Background technique [0002] In recent years, the global energy situation has become more and more serious, and environmental problems related to energy consumption, such as atmospheric warming and weather pollution, have gradually deteriorated. Energy problems have affected the survival and development of all human beings. It has become the consensus of the world to explore a feasible, efficient and economical energy pattern and reduce the impact of energy consumption on the environment. The integrated energy system can complement each energy source, coordinate operation, improve energy utilization efficiency and economic benefits, and reduce the impact of energy consumption on the environment, so it has attracted widespread attention from all over the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F17/16G06F17/15G06F17/11G06Q50/06G06F111/10G06F111/08
CPCG06F17/11G06F17/15G06F17/16G06Q50/06Y02E40/70Y04S10/50
Inventor 秦博宇方铖李景
Owner XI AN JIAOTONG UNIV