A method of converting transformer zero-sequence test data into zero-sequence parameters for calculation
A technology of zero-sequence parameters and test data, applied in the field of conversion, can solve problems such as error-prone
Active Publication Date: 2017-11-21
STATE GRID CORP OF CHINA +1
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Problems solved by technology
In addition, according to the different transformer models used in the simulation calculation program, correctly calculate the nameplate parameters and fill in the parameters corresponding to the transformer model, this process is extremely error-prone
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[0086] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0087] Such as figure 1 , the present invention provides a kind of transformer zero-sequence test data is converted into the method for calculating zero-sequence parameters, said method comprises the following steps:
[0088] Step 1: Define transformer zero-sequence test data and nameplate parameter table;
[0089] Step 2: Define transformer zero-sequence parameter table for transformer stability simulation calculation;
[0090] Step 3: Transform the zero-sequence test data of the transformer into zero-sequence parameters for the simulation calculation program PSD-SWNT and PSASP stability calculation.
[0091] In the step 1, for a double-winding transformer, the zero-sequence test data of the transformer includes the measured zero-sequence resistance SCR0 and the measured zero-sequence reactance SCX0;
[0092] For three-winding transformers, transformer ze...
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The invention provides a method for converting transformer zero-sequence test data into zero-sequence parameters used for computation. By designing a transformer zero-sequence test data list and a nameplate parameter list, the transformer test data and nameplate parameters are managed in a standardized mode, and according to the PSD-SWNT and PASAP requirements, the transformer zero-sequence test data are converted into the transformer zero-sequence parameters used for stability computation. By means of the method, the transformer zero-sequence test data can be conveniently converted to be in the data format needed by PSD-SWNT and PSASP transformer models and transformer zero-sequence parameters obtained through actual measurement can be all stored into a database. According to practical application, the method efficiently manages transformer zero-sequence information such as the zero-sequence branch connecting mode and zero-sequence test parameters, and transformer zero-sequence branches used for stabilizing a simulation program can be formed automatically through programs. Thus, the accuracy rate and the efficiency at which simulation computation workers prepare transformer stability computation data are improved.
Description
technical field [0001] The invention relates to a conversion method, in particular to a method for converting transformer zero-sequence test data into zero-sequence parameters for calculation. Background technique [0002] my country's power system has entered the era of large power grids, ultra-high voltage, ultra-high voltage, large energy bases, and long-distance power transmission. initial formation. [0003] With the development of national AC, DC, EHV, and UHV, and the implementation of networking projects, the scale of data used for power system simulation calculations is increasing, and the update and exchange of calculation data between network provinces has become more frequent and relevant. Important, manual exchange is prone to errors and consumes a lot of manpower and time. Operation and scheduling departments use planning and design data or planning and design departments use existing operation mode data often need to be completed through manual conversion, th...
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IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 刘丽平张健赵兵王琦刘明松林伟芳王建明马士聪王歆杨钊
Owner STATE GRID CORP OF CHINA