A Method of Power Cell Balancing Involving Intermittent Power Sources

A power and electricity balance and intermittent technology, applied in complex mathematical operations and other directions, can solve problems such as power misjudgment and error, and achieve the effect of improving the accuracy of balance calculation and clear physical meaning.

Active Publication Date: 2017-06-06
STATE GRID CORP OF CHINA +2
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Problems solved by technology

For example, at the moment when the maximum load occurs, the intermittent power output may be much lower than the typical value, which will lead to misjudgment of sufficient power; when performing power balance in a small area, it is usually necessary to calculate the maximum power surplus or deficit to guide For the construction of the communication channel between the target power grid and the external power grid, using the aforementioned engineering method to perform this calculation will also cause large errors

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  • A Method of Power Cell Balancing Involving Intermittent Power Sources
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  • A Method of Power Cell Balancing Involving Intermittent Power Sources

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Embodiment Construction

[0028] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0029] The present invention proposes a power balance method including intermittent power supply, the implementation process is as follows figure 1 shown.

[0030]In a specific embodiment of the present invention, the power balance in August 2015 is predicted for a regional power system including multiple wind farms. In August 2014, the system included a thermal power plant with an installed capacity of 800MW and 6 wind farms with a total installed capacity of 450MW.

[0031] In August 2015, the load forecast reached 630MW, and the power consumption forecast reached 300 million kWh. According to the power planning, the total installed capacity of wind power will increase to 500MW by August 2015, and the utilization hours of thermal power will reach 400 hours in August 2015.

[0032] Utilize the concrete steps of electric power balance method of ...

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Abstract

The invention discloses an electric power and electric quantity balance method comprising an intermittent power supply, and belongs to the technical field of electric system planning and operation. The method can describe a typical output curve and an output bound daily characteristic curve of an intermittent power supply. On the basis, the typical output curve and the output bound daily characteristic curve can be compared with the power generation capability and a load daily characteristic curve of a traditional controllable power supply to finish electric power and electric quantity balance calculation so as to eliminate a defect of overlarge errors caused by the output randomness and volatility characteristics of the intermittent power supply of a traditional engineering method.

Description

technical field [0001] The invention belongs to the field of electric power calculation, in particular to an electric power balance method including an intermittent power supply. Background technique [0002] Electric power balance is a basic task in power system planning and dispatching. Its purpose is to measure whether the power generation and supply capacity of the power system can meet the load demand. The calculation results will be used as the basis for power planning, grid planning, dispatching plan formulation, etc. . In the power balance that only includes traditional controllable power sources such as thermal power, hydropower, and nuclear power, the load is the only random variable, and the blocked capacity of the power source caused by factors such as dry season and unit maintenance can usually be determined based on experience. The general process of balance calculation is to characterize the power output as a constant, that is, the difference between the inst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/10
Inventor 叶荣易杨刘林
Owner STATE GRID CORP OF CHINA
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