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Wind, fire and electricity proportion determination method of energy base based on voltage stability analysis

A voltage stability and thermal power technology, applied in the field of determining the proportion of wind and thermal power in energy bases based on voltage stability analysis, can solve problems such as lack of multi-solution algorithms and limited applications

Inactive Publication Date: 2018-02-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Application Information

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Problems solved by technology

However, due to the lack of effective multi-solution algorithms, there are not many practical applications

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  • Wind, fire and electricity proportion determination method of energy base based on voltage stability analysis
  • Wind, fire and electricity proportion determination method of energy base based on voltage stability analysis
  • Wind, fire and electricity proportion determination method of energy base based on voltage stability analysis

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] A method for determining the proportion of wind and thermal power in energy bases based on voltage stability analysis, the specific steps are as follows figure 1 shown. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0024] (1) Consider the effective short-circuit ratio of wind power

[0025] On the basis of the traditional definition of short-circuit ratio, the effective short-circuit ratio is defined considering the addition of wind power. Since the connection of the DC system puts forward a series of technical requirements for the short-circuit ratio, the minimum short-circuit ratio that meets the constraints is obtained. Here Under the limitation of the minimum short-circuit ratio, the expression of the wind power ratio that meets the requirements can be obtaine...

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Abstract

The invention discloses a wind, fire and electricity proportion determination method of an energy base based on voltage stability analysis. After wind-electricity large scale grid connection, wind andelectricity power is greatly influenced by a wind speed, a wind power and the like, and characteristics of randomness, fluctuation and intermittence are possessed. A power supply in the invention isnot easy to control compared with a traditional power supply so that influences on a rotational inertia, a short circuit capacity and the like of an energy base sending end system in a power grid aregenerated. The method of determining wind, fire and electricity proportions of the energy base through analyzing voltage stability of the sending end system is adopted. In the method, the wind, fire and electricity proportions of the energy base can be determined so that a sending end can receive wind and electricity in a large proportion; and the whole system can be ensured to operate safely andstably, which is necessary for developing renewable energy sources of the wind, the electricity and the like in a large scale.

Description

technical field [0001] The invention belongs to the technical field of power grid stable operation detection and evaluation, and is mainly applied to the distribution of proportions of wind power and thermal power in energy bases, and specifically relates to a method for determining the proportion of wind and thermal power in energy bases based on voltage stability analysis. Background technique [0002] So far, most of the research methods at home and abroad on the proportion of wind and thermal power in the sending end energy base of the wind-fired bundled high-voltage direct current transmission system start with the stability analysis of the sending end system. The research methods of power system voltage stability can be roughly summarized into four categories: maximum transmission power method, sensitivity analysis method, power flow multi-solution method and Jacobian matrix singularity method (eigenvalue analysis method). The details are as follows: [0003] 1) Maxim...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46H02J3/38
CPCH02J3/386H02J3/46Y02E10/76
Inventor 张海波张琳雅魏一汀
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)