A Method and System for Measuring and Calculating the Consumption of Tie Lines Based on Dynamic Load Balance

A dynamic load, tie-line technology, applied in the direction of eliminating/reducing asymmetry in polyphase networks, AC network circuits, reducing asymmetry in polyphase networks, etc., can solve problems such as lack of

Active Publication Date: 2021-04-23
STATE GRID HUNAN ELECTRIC POWER +2
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  • Description
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  • Application Information

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Problems solved by technology

However, there is a lack of a reliable and quick way to obtain the consumption capacity of the UHV DC tie-line mainly for clean energy power generation in the existing technology

Method used

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  • A Method and System for Measuring and Calculating the Consumption of Tie Lines Based on Dynamic Load Balance
  • A Method and System for Measuring and Calculating the Consumption of Tie Lines Based on Dynamic Load Balance
  • A Method and System for Measuring and Calculating the Consumption of Tie Lines Based on Dynamic Load Balance

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with examples.

[0032] Such as figure 1 As shown, a method for measuring and calculating the consumption of tie lines based on short-term dynamic load balancing provided by the present invention includes the following steps:

[0033] S1: Construct a short-term dynamic load balance model based on grid load balance. Among them, based on the grid load balance, the short-term dynamic load balance model needs to satisfy the following formula:

[0034] D. t =G L,t +G r,t +L h,t +L other,t

[0035] In the formula, D t Indicates the load value of the grid at time t, G L,t Indicates the output value of the local unit of the power grid at time t, G r,t Indicates the output value of grid clean energy at time t, L h,t Indicates the planned value of the UHV DC tie-line at time t, L other,t Indicates the sum of the tie-line planning values ​​of other tie-lines at time t except the UHV DC tie-line.

[0...

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Abstract

The invention discloses a method and system for measuring and calculating the consumption amount of tie lines based on dynamic load balance. The method includes S1: constructing a short-term dynamic load balance model based on power grid load balance; The planned start-up mode of the local unit calculates the upper limit and lower limit of the consumption plan value of the UHV DC tie line at each time to be studied; S3: based on the segmented method of the pre-stored UHV DC tie line plan curve and The upper limit and lower limit of the consumption plan value of the UHV DC tie-line at the research time are obtained to obtain the segmented curve of the consumption plan value of the UHV DC tie-line. The method of the present invention measures the consumption plan value of the UHV DC tie line, so that the segmented curve of the consumption plan value of the UHV DC tie line can be applied to the dispatching mechanism to increase the consumption ratio of clean energy.

Description

technical field [0001] The invention belongs to the field of power grid dispatching, and in particular relates to a method and system for measuring and calculating tie line consumption based on dynamic load balancing. Background technique [0002] With the unique advantages of the power grid tie-line plan, power trading has realized the optimal allocation of energy resources nationwide, effectively solving the situation where shortcomings and dens coexist, and the increasingly close connection between major regions and inter-provincial power grids, and tie-line power transmission The improvement of capability hardware has made a more solid foundation for the optimal allocation of energy resources. However, the current grid structure and the status quo of water and thermal power resources restrict the large-scale consumption of clean energy. How to fully mobilize various adjustment methods of the power grid to fully absorb UHV DC power mainly generated by clean energy is cruc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/26
CPCH02J3/26H02J2203/20Y02E40/50
Inventor 向萌左剑胡臻柳永妍呙虎张可人沈阳武崔挺
Owner STATE GRID HUNAN ELECTRIC POWER
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