Limit power calculating method of associated electricity transmission cross-section based on parallel calculating model

A technology of power transmission section and limit power, which is applied in calculation, electrical components, circuit devices, etc., and can solve the problems of unable to meet the needs of calculation speed, long calculation time, lack of fast calculation methods, etc.

Active Publication Date: 2011-08-31
NARI TECH CO LTD
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Problems solved by technology

At present, the calculation of the limit power of the associated transmission section lacks an effective and fast calculation method, and still relies on system analysts to determine it through a large number of iterative calculations, which takes a long time to calculate and cannot meet the calculation speed requirements of online security and stability assessment

Method used

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  • Limit power calculating method of associated electricity transmission cross-section based on parallel calculating model
  • Limit power calculating method of associated electricity transmission cross-section based on parallel calculating model
  • Limit power calculating method of associated electricity transmission cross-section based on parallel calculating model

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Embodiment Construction

[0012] Attached below figure 1 , the method of the present invention is described in detail.

[0013] figure 1 Step 1 in the above describes the estimation of the static safety limit of each section in the associated transmission section based on the current operation mode of the power grid. First, according to the active power distribution ratio of the total active power of each transmission section in its components (lines, transformers) under the current mode of the power grid , use the formula (1) to estimate the total active power of the section when the power flow of any element in the components of each section reaches its long-term operation allowable value ,in is the current active power of the i-th element in a transmission section, is the active power when the power flow of the element increases to its long-term operation allowable value at a constant current power factor (assuming that the voltage across the element remains constant), l is the number of comp...

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Abstract

The invention belongs to the power system calculating and analysis technology field, and is applicable to calculate limit powers of associated electricity transmission cross-sections considering static, transient and dynamic security and stability constraints. The limit power calculating method of associated electricity transmission cross-section based on parallel calculating model comprises the steps of firstly calculating a static security limit, and then calculating security and stability limits of the transient and dynamic, on the basis of estimating the power increasing amount of each cross-sections considering over loading security of equipment; classifying the power increasing space of each cross-sections in turn according to the examined failure number and the example calculating capability of a parallel processing platform, and carrying out security and stability calculations for the run modes of different electricity transmission power combinations of each cross-sections by parallel example; judging whether to carry out security and stability calculations of the next round according to the precision requirement of limit calculation after all examples of the round being calculated, and filtering the examined failure set before each round of calculation; and finally, calculating mutual influence factors between limit powers of each cross-sections by analyzing the limitcalculation process information.

Description

technical field [0001] The invention belongs to the technical field of power system calculation and analysis. Background technique [0002] The power of a transmission section is a key indicator for power system dispatchers to monitor the safe and stable operation of the power grid. In a large power grid, the safety and stability of each transmission section may not only be closely related to the transmission power of this section, but also be affected by the transmission power of other sections. , the present invention refers to multiple power transmission sections that influence each other as associated power transmission sections. At present, the calculation of the limit power of the associated transmission section lacks an effective and fast calculation method, and still relies on system analysts to determine it through a large number of iterative calculations, which takes a long time to calculate and cannot meet the calculation speed requirements of online security and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F19/00
Inventor 徐泰山彭慧敏马明姚海成鲍颜红李碧君王胜明徐伟刘韶峰郑亮
Owner NARI TECH CO LTD
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