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Full-electromagnetic transient modeling method for power grid

An electromagnetic transient, modeling method technology, applied in special data processing applications, design optimization/simulation, etc., can solve problems such as poor calculation accuracy, and achieve the effect of high calculation accuracy

Pending Publication Date: 2021-06-01
STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD ELECTRIC POWER RES INST +1
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor calculation accuracy when the existing electromechanical transient model of the power grid performs fault-free electromagnetic transient calculation on the AC-DC interconnected power grid, and proposes a full electromagnetic transient modeling method for the power grid

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  • Full-electromagnetic transient modeling method for power grid
  • Full-electromagnetic transient modeling method for power grid
  • Full-electromagnetic transient modeling method for power grid

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specific Embodiment approach 1

[0013] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a power grid full electromagnetic transient modeling method described in this embodiment includes the following steps:

[0014] Step 1. Using the full digital real-time simulation system (ADPSS) of the electric power system, the electromechanical model parameters in the PSASP platform are checked according to the electromechanical data checking and correction method;

[0015] Step 2, using the electromechanical model parameters checked in step 1 to establish the AC electromechanical model of the power grid;

[0016] Step 3, converting the grid AC electromechanical model established in step 2 into a backbone grid electromagnetic model;

[0017] Step 4, establishing the DC electromechanical model of the power grid;

[0018] Step 5. Initialize the grid DC electromechanical model established in step 4;

[0019] Step 6: Add the DC electromechanical model of the power grid initialized in step...

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Abstract

The invention discloses a full-electromagnetic transient modeling method for a power grid, relates to a power grid full-electromagnetic transient modeling technology, and aims to solve the problem of poor calculation precision when an existing power grid electromechanical transient model is used for performing fault-free electromagnetic transient calculation on an alternating-current and direct-current interconnected power grid. The method comprises the steps of by means of an all-digital real-time simulation system of a power system, checking electromechanical model parameters in a PSASP platform according to an electromechanical data checking and correcting method; establishing a power grid alternating current electromechanical model by using the checked electromechanical model parameters; converting the established alternating-current electromechanical model of the power grid into a backbone grid electromagnetic model; establishing a power grid direct-current electromechanical model by using the checked electromechanical model parameters; initializing the direct-current electromechanical model of the power grid; and adding the initialized power grid direct-current electromechanical model into the backbone grid electromagnetic model to generate a power grid full-electromagnetic transient model. The beneficial effect is that the calculation precision is high.

Description

technical field [0001] The invention relates to a power grid full electromagnetic transient modeling technology. Background technique [0002] At present, electromechanical transient simulation is mostly used in the simulation analysis of AC and DC interaction. Although the AC grid has basically been modeled with measured data, the modeling of UHV DC is still relatively simplified; some studies have used electromechanical-electromagnetic transient hybrid simulation. However, most of them only model DC as electromagnetic transients, and the rest of the power grid are modeled as electromechanical transients; since the electromechanical transient model is described by fundamental wave phasors, the harmonic characteristics such as waveform distortion caused by nonlinear elements on the electromagnetic side cannot be completely It is transmitted to the electromechanical side through the hybrid simulation interface, so it affects the calculation accuracy to a certain extent. Con...

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Application Information

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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 张睿王文博李文希张美伦
Owner STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD ELECTRIC POWER RES INST
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