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Universal PSCAD voltage regulator modeling method used for PSASP to PSCAD data model conversion

A modeling method and data model technology, applied in geometric CAD, special data processing applications, electrical digital data processing, etc., can solve problems such as inconsistent calculation and processing of excitation system models, errors, difficulties in automatic conversion of data and models, and achieve good results. Adaptability and scalability, enabling automation, the effect of increasing simulation accuracy

Active Publication Date: 2016-11-09
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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Problems solved by technology

However, the excitation models and data storage formats in the two software model libraries are quite different, and the calculation and processing of the excitation system models are also inconsistent, which has caused great difficulties and errors in the automatic conversion of data and models.

Method used

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  • Universal PSCAD voltage regulator modeling method used for PSASP to PSCAD data model conversion
  • Universal PSCAD voltage regulator modeling method used for PSASP to PSCAD data model conversion
  • Universal PSCAD voltage regulator modeling method used for PSASP to PSCAD data model conversion

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Embodiment

[0050] figure 2 It represents the equivalent transformation of the lead-lag link in the common link of the transfer function block diagram of the voltage regulator AVR in the PSASP software, and uses the hermit trapezoidal integral method to solve this link in the time domain. The voltage regulator is a conventional or fast excitation system and thyristor regulator for other excitation, image 3 Represents the transfer function block diagram of a Type 1 voltage regulator in the PSASP software. Perform equivalent transformation on all links of the transfer function of Type 1 AVR.

[0051] Create a custom model in PSCAD, define the type and quantity of input and output terminals of Type 1 AVR, edit the constant input parameter table and appearance of the model. Such as Figure 4Indicates the appearance of Type 1 AVR. This type of AVR has 3 input terminals and 3 output terminals, among which "Vit" is a 3-dimensional terminal, and the others are 1-dimensional terminals. Then ...

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Abstract

The invention discloses a universal PSCAD voltage regulator modeling method used for PSASP to PSCAD data model conversion. The method comprises the steps of performing initialization and analytic conversion on each link of a voltage regulator transfer function block diagram in a PSASP, determining input and output variables, and determining a state variable of an intermediate link; establishing a voltage regulator model, defining input and output pins, and self-defining appearance and constant parameters of elements; and writing a control program of a voltage regulator by adopting a Fortran language. According to the method, model correspondence and calling during automatic conversion are realized, so that an excitation system model in a PSCAD software model library is perfected and more excitation system simulation models are provided for power system transient simulation.

Description

technical field [0001] The invention relates to the technical field of mutual conversion of simulation software data models, in particular to a voltage regulator modeling method for converting a PSASP data model into a PSCAD data model. Background technique [0002] With the access and application of power electronic devices, wind power, photovoltaic power generation and other new energy sources to the power grid, the operation and control of power systems have become more complex. And digital simulation is the main means of power system planning, control and analysis, so it is necessary to use more accurate and finer simulation of power system. In recent years, PSCAD / EMTDC software has been widely used all over the world. With the continuous improvement and updating of software functions by developers, the software has played an important role in simulating nonlinear systems such as AC-DC hybrid transmission and flexible AC transmission that contain a large number of power ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367
Inventor 陈涛杨帆徐亨朱小军朱晟毅徐瑞林
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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