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Method and device for calculating maximum power transmission capacity

A technology of maximum power and calculation method, applied in the direction of circuit devices, electrical components, AC network circuits, etc., can solve the problem of low technical accuracy

Active Publication Date: 2018-11-16
YUNNAN POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a method and device for calculating the maximum power delivery capacity to solve the problem of low accuracy of the existing technology for obtaining the maximum power delivery capacity

Method used

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  • Method and device for calculating maximum power transmission capacity
  • Method and device for calculating maximum power transmission capacity
  • Method and device for calculating maximum power transmission capacity

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0200] Example 1, taking 2020 as an example, calculate the maximum power output capacity in a normal year. According to the principle of energy conservation, the constraint conditions of the water-fired power system are set; according to the power demand forecast of the electricity load in the average water year, the power demand forecast value is obtained, and the power demand forecast value is calculated according to the power demand forecast value, the external transmission capacity, and the external transmission power. The hydropower idle capacity and surplus power of , set the initial value of the outgoing capacity and the initial value of the outgoing electricity, calculate the system parameter values ​​​​in the average year, continue to perform steps 104 to 108, and finally calculate the maximum power in the average year of 2020 The output scale is about 41.98 million kW, and the output power is about 253.2 billion kWh.

example 2

[0201] Example 2, during the planned load period in the dry year, the calculation process of the maximum power output capacity refers to Example 1, and the final calculation shows that the maximum power output scale in the dry year of 2020 is about 39.05 million kW, and the output power is about 228.9 billion kWh .

[0202] According to the calculation method of the maximum power delivery capacity proposed in this application, the monthly power delivery capacity can also be calculated, based on the current month's power demand forecast and the output capacity and the hydropower idleness calculated when the delivery capacity is 0. For capacity and surplus power, set the initial value of the outgoing capacity and the initial value of the outgoing electric power. For the specific calculation method, refer to step 101 to step 108, which will not be repeated here.

[0203] The embodiment of the present application provides a calculation device for the maximum power delivery capacit...

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Abstract

The invention discloses a method and device for calculating the maximum power transmission capacity, and the power transmission capacity is represented by the external transmission capacity and an external transmission quantity. The method comprises the steps: setting constraint conditions of a system; calculating a hydroelectric spare capacity and a redundant electric quantity when a power demandprediction value, the external power transmission capacity and the external transmission quantity are zero; setting the initial values of the external transmission capacity and the external transmission quantity, and obtaining system parameter values according to the initial values; adjusting the external transmission capacity and the external transmission quantity if the system parameter valuesdo not meet a circulation termination condition, and obtaining new system parameter values; comparing the hydroelectric spare capacity and redundant electric quantities in all system parameter values;taking the external transmission capacity corresponding to the minimum hydroelectric spare capacity in all system parameter values and the external transmission quantity corresponding to the minimumwater abandoning electric quantity as the maximum power transmission capacity. Therefore, the method can achieve the accurate calculation of the maximum power transmission capacity.

Description

technical field [0001] The present application relates to the field of electric power system and its automation, and in particular to a method and device for calculating the maximum power delivery capacity. Background technique [0002] At present, the power system in Southwest my country is usually dominated by hydropower and supplemented by thermal power. In areas with relatively abundant water resources, the hydrothermal power system will generate more or more hydropower during the high water season. If it cannot be fully consumed, a large amount of water will be discarded, resulting in waste of water resources. Therefore, in order to realize the full utilization and optimal allocation of hydropower resources, promote the transformation and upgrading of energy structure, and solve the problem of water abandonment in areas with abundant water resources, it is necessary to carry out research on the delivery and consumption of surplus hydropower, and calculate the maximum po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00
Inventor 赵岳恒钱纹王志敏刘娟胡凯钟胜程改红林廷卫康义朱庆春
Owner YUNNAN POWER GRID