Method and device for optimizing transmission plan of direct current channel

A DC channel and optimization method technology, applied in the direction of circuit devices, AC network circuits, load forecasting in AC networks, etc., can solve problems such as high peak pressure in the sending end area

Active Publication Date: 2017-11-07
STATE GRID ENERGY RES INST
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Problems solved by technology

[0004] The technical problem to be solved by the embodiments of the present invention is to provide an optimization method for the DC channel p

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  • Method and device for optimizing transmission plan of direct current channel
  • Method and device for optimizing transmission plan of direct current channel
  • Method and device for optimizing transmission plan of direct current channel

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Embodiment Construction

[0106] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0107] refer to figure 1 , which shows a flow chart of the steps of a method for optimizing a direct current channel power transmission plan provided by an embodiment of the present invention, and the method may specifically include the following steps,

[0108] Step 10, using the daily output of conventional units in the sending area to construct an expression function for the downward peak-shaving capability of the sending-end area; The daily output of conventional units in the sending end area is expressed as:

[0109] P S,t =P LS,t -P RE,t +P T,t ;

[0110] Among them, P S,t Indicates the output value of conventional units in the sending area at time t;

[0111] P LS,t Indicates the load forecast value of the sending ...

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Abstract

An embodiment of the present invention provides a method and a device for optimizing a transmission plan of a direct current channel. The method includes: using a sunrise force of a conventional generating unit in a sending terminal region to construct an expression function of the sending terminal region's downward peak shaving capability; using a sunrise force of a conventional generation unit in a receiving terminal to construct an expression function of the receiving terminal region's downward peak shaving capability; performing weighted summation of the expression function of the sending terminal region's downward peak shaving capability and the expression function of the receiving terminal region's downward peak shaving capability to construct a target function with the maximum comprehensive downward peak shaving capability as the target; determining the sending terminal region's daily load predicted value, the new energy sunrise force predicted value and the receiving terminal region's daily load predicted value; determining a planned value of a power transmission day from the sending terminal region to the receiving terminal region. In the embodiments of the present invention, the peak shaving resources of the power grids in the sending terminal region and the receiving terminal region are fully comprehensively planned and the peak shaving pressure in the sending terminal region due to the fluctuation of output of new energy sources is effectively reduced. When the output of new energy sources is relatively large, the new energy consumption of the sending terminal region and the new energy transportation proportion of the channel are improved.

Description

technical field [0001] The invention relates to the technical field of power system operation and scheduling automation, in particular to a method and device for optimizing a DC channel power transmission plan. Background technique [0002] In recent years, my country's new energy power generation represented by wind power and photovoltaic power generation has developed rapidly, and the installed capacity and power generation capacity of power generation have grown rapidly year after year. But on the other hand, compared with conventional power sources such as thermal power and large-scale hydropower, new energy power generation has strong randomness, poor controllability, and intermittent characteristics, and needs to be regulated by conventional power sources such as thermal power and hydropower. The northwest region of my country is an area rich in new energy such as wind energy and solar energy. The development potential of new energy power generation is great, but the l...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/36H02J3/38G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q50/06H02J3/00H02J3/003H02J3/36H02J3/382H02J2203/20Y02E60/60Y04S10/50
Inventor 弭辙王耀华刘俊郑宽张晋芳焦冰琦赵秋莉
Owner STATE GRID ENERGY RES INST
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