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Energy hub optimizing model taking wind power nondeterminacy into consideration and including power to gas and CCHP

A technology of uncertainty and optimization model, applied in the field of multi-energy utilization, can solve problems such as energy hub model not introduced

Active Publication Date: 2016-10-26
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Application Information

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Problems solved by technology

However, the study of the energy hub model including power-to-gas function, CCHP and energy feedback is not introduced

Method used

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  • Energy hub optimizing model taking wind power nondeterminacy into consideration and including power to gas and CCHP
  • Energy hub optimizing model taking wind power nondeterminacy into consideration and including power to gas and CCHP
  • Energy hub optimizing model taking wind power nondeterminacy into consideration and including power to gas and CCHP

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Embodiment Construction

[0009] The present invention comprises the following steps:

[0010] 1. Uncertainty of wind power output

[0011] Due to the characteristics of randomness, intermittency and poor controllability of wind energy, as well as the limitations of existing wind power forecasting methods, errors in wind power forecasting are inevitable. Overall, the forecast error presents a certain probability distribution characteristic. There are many studies on the distribution of wind power forecast error, among which the normal distribution assumption is the most widely used. The present invention selects the normal distribution model to study the wind power prediction error, and uses the error interval to describe the uncertainty of wind power (such as figure 1 ). The wind power prediction curve may be any curve in the shaded interval. For each period, the closer to the central value, the greater the probability of occurrence. The present invention selects a wind power prediction curve in th...

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Abstract

The invention aims at absorbing all renewable energy, realizing peak clipping and value filling of the large power grid, improving economical benefit and adjusting accuracy of an energy hub with CCHP, and reducing the transmission cost of natural gas. An energy hub model with a power to gas function, energy storage, CCHP and electric energy feedback is constructed. Factors including a power to gas commissioning factor of a fuel and purchase based electric charge rate structure and nondeterminacy of self gas utilization and wind power output of the energy hub are taken into consideration, the energy hub model is optimized to make the fuel cost of the energy hub minimal and the energy interaction cost of the main grid minimal, and the effectiveness of the constructed energy hub model is determined.

Description

technical field [0001] The invention belongs to the field of multi-energy utilization, and constructs an energy hub model including power-to-gas function, energy storage, combined cooling, heating and power supply and electric energy feedback. Considering the power-to-gas commissioning factor based on the fuel and electricity purchase and sale rate structure, the uncertainty of the energy hub's self-use of gas production and wind power output, the energy with the lowest fuel cost for energy hub operation and the lowest energy interaction cost with the main grid is the optimization goal. The hub model is optimized. Background technique [0002] The energy crisis and air pollution have become major strategic issues of great concern at home and abroad. The utilization of clean energy and renewable energy has received great attention, and people have begun to conduct research on the comprehensive utilization of various forms of energy such as electricity, gas, and heat. Energy ...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/38H02J3/32
CPCH02J3/32H02J3/386H02J3/46H02J2203/20Y02E10/76Y02E70/30
Inventor 马瑞邓剑波
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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