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Electrical quantity transducer simulation system and method used for semi-physical simulation platform

A semi-physical simulation and power transmitter technology, which is applied in general control systems, simulators, control/regulation systems, etc., can solve the limitations of the control strategy of the main control system, the performance test and simulation results of the main controller are not accurate enough, and cannot Consider issues such as fieldbus transmission delay issues

Pending Publication Date: 2020-01-10
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned published patents, the way the main control system monitors electrical state quantities is quite different from that used in field applications, and the incomplete state quantities obtained may limit the control strategy of the main control system to a certain extent.
The transmission method of analog quantity cannot consider the delay problem of field bus transmission in practical applications, and it is not universal. Different types of wind turbine main controller PLC peripheral interfaces and programs need to be changed. Therefore, under abnormal operating conditions of the power grid The main controller performance test and simulation results are not accurate enough

Method used

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  • Electrical quantity transducer simulation system and method used for semi-physical simulation platform
  • Electrical quantity transducer simulation system and method used for semi-physical simulation platform
  • Electrical quantity transducer simulation system and method used for semi-physical simulation platform

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Effect test

Embodiment 1

[0054] The present invention provides the power grid status monitoring function for the main controller of the access platform based on the real-time simulation equipment. The real-time simulation equipment includes a real-time simulation controller, an analog quantity acquisition module and a serial port communication module, and the modules are connected through the PCIe bus. , wherein the real-time simulation controller realizes the real-time calculation function of the collected quantity, and can manage the analog quantity collection module and the serial port communication module at the same time.

[0055] In the hardware-in-the-loop simulation platform, a set of real-time simulation system is used to establish the electrical system model of electromagnetic transient state, such as figure 1 As shown, it can output the analog quantities of three-phase voltage and three-phase current, and the communication interface between the main controller and the power transmitter is Modb...

Embodiment 2

[0084] A power transmitter simulation system for a hardware-in-the-loop simulation platform, the power transmitter simulation system is respectively connected to the wind turbine electrical model and the main controller, and the power transmitter simulation system includes:

[0085] Analog acquisition module, real-time calculation module and communication module;

[0086] The analog quantity acquisition module is used to: acquire instantaneous value data of phase voltage and current on the low-voltage side from the electrical model of the wind turbine;

[0087] The real-time calculation module is used to: calculate and generate the value of the demand variable according to the collected instantaneous value data based on the set master controller demand variable;

[0088] The communication module is used for: transmitting the value of the demand variable of the main controller to the main controller through the field bus.

[0089] The analog quantity acquisition module is also...

Embodiment 3

[0097] The invention is based on a semi-physical simulation platform, provides a power transmitter simulation module, and assists a main controller to realize power grid state monitoring. The electrical model of the hardware-in-the-loop simulation platform needs to include wind turbines, transformers and power grid models, capable of electromagnetic transient or electromechanical transient simulation, and has an analog output module. The power transmitter simulation module is mainly composed of an analog quantity acquisition module, a real-time calculation module and a communication module, which can be realized based on a PLC architecture or a hardware device with real-time calculation capabilities.

[0098] The analog quantity acquisition module in the simulation module of the power transmitter collects phase voltage and current instantaneous value data on the low voltage side from the wind turbine electrical model part in the real-time simulation system. Signals within the ...

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Abstract

An electrical quantity transducer simulation system used for a semi-physical simulation platform is provided. The electrical quantity transducer simulation system is connected with a wind power generator electrical model and a master controller, and comprises an analog acquisition module, a real-time calculation module and a communication module; wherein the analog acquisition module is used for acquiring instantaneous value data of a phase voltage at a low voltage side and a current from the wind power generator electrical model; the real-time calculation module is used for performing calculation according to the acquired instantaneous value data based on set master controller requirement variables, so as to generate values of the master controller requirement variables; and the communication module is used for transmitting the values of the master controller requirement variables to the master controller in a field bus mode. The technical scheme provided by the electrical quantity transducer simulation system of the invention solves the problem of modification of PLC (Programmable Logic Controller) peripheral interfaces and programs of the master controller, so that test and evaluation results are accurate, and high credibility is achieved, so as to be suitable for different types of wind power generator master controllers.

Description

technical field [0001] The invention relates to new energy access and control, in particular to a power transmitter simulation system and method for a semi-physical simulation platform. Background technique [0002] As the core system of wind turbine control, the main control system needs to collect and monitor the electrical state quantities of the power grid to control the operation status and working mode of the wind turbine and realize reliable and safe grid-connected power generation. At present, the main control system of mainstream wind turbines generally obtains electrical quantities related to the state of the power grid in two ways. The first is obtained by using an external power transmitter, and the other is obtained by collecting and calculating the converter controller. The amount of information obtained through the second method is less, and generally only includes line voltage and frequency information, while the first method includes multiple types of signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 苗风麟李庆贺敬秦世耀张金平李春彦王顺来解鸿斌李建立
Owner CHINA ELECTRIC POWER RES INST
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