Receiving-end power grid power supply planning method considering extra-high-voltage direct current access

A UHV DC, receiving-end power grid technology, applied in the direction of AC network circuits, power transmission AC networks, circuit devices, etc.

Inactive Publication Date: 2017-03-29
STATE GRID CORP OF CHINA +2
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method ignores the ability of UHVDC transmission to participate in cross-regional peak regulation in a wide area, and the impact of a high proportion of UHVDC out-of-region power on the safe and stable operation of the receiving power grid

Method used

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  • Receiving-end power grid power supply planning method considering extra-high-voltage direct current access
  • Receiving-end power grid power supply planning method considering extra-high-voltage direct current access
  • Receiving-end power grid power supply planning method considering extra-high-voltage direct current access

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing:

[0027] Such as figure 1 As shown, the power planning method of the receiving power grid considering UHV DC access includes the following steps:

[0028] (1) Establish the reliability evaluation index system of the UHV DC transmission system and the evaluation index system of the power supply construction of the power grid at the receiving end;

[0029] (2) Calculating the degree of correlation between the two systems of incoming electricity from outside the UHV DC area and the construction of the power supply of the power grid at the receiving end;

[0030] (3) Select the indicators with a higher degree of correlation as the reliability index constraints and penalty functions;

[0031] (4) Add the above constraints and penalty functions to the objective function of the constraints of the power planning model respectively to form a new model.

[0032] (5) Solve the new po...

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Abstract

The invention relates to a receiving-end power grid power supply planning method considering extra-high-voltage direct current access. According to the method, on the basis of working out an extra-high-voltage direct current power transmission system and a receiving-end power grid power supply construction system, and correlation degrees of indexes in the two systems, main factors, influencing power supply construction planning in a province, of the extra-high-voltage direct current power transmission system are analyzed; by combination with a conventional power supply planning method, an objective function and a constraint condition are established by taking the main factors as the core and by taking optimal overall social benefit as the principle; a receiving-end power grid power supply planning model considering the extra-high-voltage direct current access is established; and by solving the model, a required power supply planning scheme can be obtained.

Description

technical field [0001] The invention relates to the technical field of power system power supply planning, in particular to a receiving-end power grid power planning method considering UHV direct current access. Background technique [0002] UHV DC transmission technology refers to the DC transmission technology with a voltage level of ±800kV and above. It has the characteristics of large transmission capacity and long transmission distance, and meets the basic requirements of my country's inter-regional power transmission. Because the UHV DC transmission project is in the " It is favored in the 12th Five-Year Plan and the 13th Five-Year Plan. As of 2020, the State Grid will build 27 UHV DC transmission projects, forming a cross-regional and cross-provincial transmission capacity of 450 million kW. "The power grid is the core, interconnected with the Northeast, Northwest, and South power grids through direct current, connecting major coal power bases, large hydropower bases, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36
CPCH02J3/36H02J2203/20Y02E60/60
Inventor 于琳琳刘永民黄景慧魏胜民李庚银夏世威余晓鹏田春筝毛玉宾王洋王敬张丽华司瑞华马杰孙广增李甜甜王世谦甘磊程昱明孙思培袁鹏韩笑杜习超王圆圆贾鹏苗福丰李琰刘万勋
Owner STATE GRID CORP OF CHINA
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