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A data communication method for real-time simulation of electromagnetic transient state in power system

A data communication and electromagnetic transient technology, applied in electrical digital data processing, transmission systems, special data processing applications, etc., can solve the problem that traditional solutions cannot support real-time simulation requirements of large-scale power grids, and ensure stability and real-time performance. , the effect of reducing consumption

Active Publication Date: 2022-06-07
STATE GRID FUJIAN ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a real-time simulation data communication method for electromagnetic transients in power systems, which solves the problem that traditional solutions cannot support the real-time simulation requirements of large-scale power grids

Method used

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  • A data communication method for real-time simulation of electromagnetic transient state in power system
  • A data communication method for real-time simulation of electromagnetic transient state in power system
  • A data communication method for real-time simulation of electromagnetic transient state in power system

Examples

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Embodiment 1

[0075] In this embodiment, for the calculation example of vsc1_new_PWM_STATCOM_Con_BRK, an improved voltage three-phase bridge PWM circuit structure is provided Image 6 As shown below, using IGBT as a switching device can be regarded as consisting of three half-bridge inverter circuits. Its basic working mode is 180° conduction mode, that is, the conduction angle of each bridge arm is 180°, the upper and lower bridge arms of the same phase conduct electricity alternately, and the angle at which each phase starts to conduct electricity differs by 120° in turn. At any instant, three bridge arms are turned on at the same time. The AC grid is replaced by an infinite power source with internal resistance, and the transformer uses YnY wiring. The DC side uses a DC voltage source to stabilize the voltage.

[0076] An electromagnetic transient test example of voltage-type three-phase bridge PWM inverter circuit is established in the electromagnetic transient real-time simulation pl...

Embodiment 2

[0084] In this embodiment, the test circuit (vsc1_new_PWM_STATCOM_Con_BRK_Phy) of the IO interface with the external physical device; provides a three-phase bridge PWM reactive power compensation circuit structure Figure 13 As shown, IGBTs are used as switching devices. The AC grid is replaced by an infinite power source with internal resistance, and the transformer uses YnY wiring. The DC side uses a DC voltage source to stabilize the voltage.

[0085] The electromagnetic transient model of the above example is established in the electromagnetic transient real-time simulation platform. The right power supply is a 1KV three-phase AC voltage source with internal resistance, and the left is a three-phase AC controlled current source.

[0086] Six IGBT switches are used to form the converter circuit, and the resistance and inductance values ​​of the three-phase symmetrical RLC equivalent load are both 0.01 p.u.

[0087] The switches SinglePhaseBreaker-10, SinglePhaseBreaker-1...

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Abstract

The invention relates to a method for real-time simulation data communication of electromagnetic transient state in power system, comprising the following steps: Step S1: According to the difference in the simulation rate requirements between different modules in the power grid, the power grid is divided into a subnet with a large simulation step size and a subnet with a small simulation step size network; step S2: emulate the large simulation step size subnet on the Linux server, and simulate the small simulation step size subnet on the FPGA, and realize coarse-grained parallel size step size heterogeneous calculation through data interaction between the server and the FPGA; step S3: Use fine-grained parallel design inside the FPGA to optimize the simulation rate of subnetworks with small step sizes; Step S4: Design qualified optical fiber communication schemes, real-time data interaction schemes, interface hardware design schemes, and communication protocol frames to realize power system electromagnetic temporary State real-time simulation data communication. The invention realizes the high-speed data interaction between the large and small step size simulation systems in the real-time simulation of the electromagnetic transient state of the large power grid, and effectively ensures the stability and real-time performance of calculation and communication.

Description

technical field [0001] The invention relates to the field of electromagnetic transient simulation of power systems, in particular to a method for real-time simulation data communication of electromagnetic transients of power systems. Background technique [0002] Designing a complete FPGA-based data communication scheme for electromagnetic transient simulations has some common challenges. Since each calculation needs to be delineated to a specific hardware computing module, each module works in parallel. Therefore, in complex algorithms, to find the internal parallelism, it is not easy to design independent modules and exchange data through interconnected modules. The problem of data correlation makes it difficult to parallelize the algorithm. [0003] At present, there are many researches on electromagnetic transient simulation and related communication schemes based on FPGA. Some of them have better real-time performance, but they only simulate a single device and are far...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/367G06F30/31H04L41/14G06F113/04G06F111/02
CPCH04L41/145Y04S40/124
Inventor 项胤兴方日升李雄飞贺光辉张伟骏陈伯建黄霆苏清梅潘晨曦张星穆青王峰
Owner STATE GRID FUJIAN ELECTRIC POWER RES INST
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