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Whole-network-and-local-model-combined transformer substation running status analyzing method

A technology of local models and analysis methods, applied in the intersection of UHV transmission and power system simulation, can solve problems such as analysis methods for non-adjacent substations, and achieve the effect of accurately analyzing equipment safety

Active Publication Date: 2014-07-30
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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  • Description
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  • Application Information

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Problems solved by technology

However, there is currently no method for analyzing the operating status of specific equipment in adjacent substations after UHV capacity expansion

Method used

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  • Whole-network-and-local-model-combined transformer substation running status analyzing method
  • Whole-network-and-local-model-combined transformer substation running status analyzing method
  • Whole-network-and-local-model-combined transformer substation running status analyzing method

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Embodiment Construction

[0013] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0014] The specific implementation steps are as follows: the first step: as figure 1 As shown, the present invention proposes a method for analyzing the operation status of adjacent substation equipment after UHV capacity increase by combining the whole network and local models. The power flow calculation is performed on the provincial network where the UHV line is located. E-format power grid model, and the model is equivalent, and the provincial network where the UHV line is located is formed into an island, and then the power flow calculation of the island is performed to obtain node voltage and line transmission power data; from the entire network (that is, the provincial network) At the beginning of the power fl...

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Abstract

The invention belongs to the crossing field of ultra-high voltage power transmission and electrical power system simulation and particularly relates to a whole-network-and-local-model-combined transformer substation running status analyzing method which comprises the following steps that a province net where an ultra-high voltage line is placed is subjected to load flow calculation, a National Electric Power Dispatching and Communication Center E format power grid model is used in load flow calculation initial data, the model is subjected to equivalence, the province net where the ultra-high voltage line is placed forms an island independently, then load flow calculation of the island is carried out, and node voltage and line transmission power data are obtained. According to the whole-network-and-local-model-combined simulated analysis method, safe operation of adjacent transformer substation main equipment and correct control of secondary equipment are guaranteed, a whole network model provides comprehensive data, whole network load flow influence is considered, the total rule is analyzed, local model fining simulation is achieved, and equipment safety is analyzed accurately.

Description

technical field [0001] The invention belongs to the intersecting field of UHV power transmission and power system simulation, and in particular relates to a method for simulating and analyzing the operation status of adjacent substation equipment after UHV capacity increase by combining a whole network model and a local model; specifically, a whole network and a local model Combined substation operation status analysis method. Background technique [0002] At present, the first UHV AC line in China has been put into operation, and the research on the influence of UHV environment on primary and secondary equipment has started. The substation adjacent to the UHV substation is used as the power point of UHV power transmission, which plays a decisive role in ensuring the transmission capacity of the UHV substation. It can be said that the stable operation of the adjacent substation is the prerequisite for reliable UHV power supply. After UHV capacity increase, with the increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/52G06F30/20G06F30/367G06F2119/06Y02E60/00Y04S40/20G01R31/40G01R31/58G01R31/62
Inventor 董雷李烨田爱忠沈晓丽柳鹏王婵琼
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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