Analysis of electric field inside HV substations using charge simulation method in three dimensional

Shaalan, Essam M.; Ghania, Samy M.; Ward, Sayed A.

doi:10.1109/ceidp.2010.5724041

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…The model can establish algebraic equations as shown in Eqs. (8) to (10). Simultaneously solving the above equations, the simulated current value and the surface magnetic potential of each wire can be obtained.…”

Section: The Basic Principle Of the Analog Current Methodsmentioning

confidence: 99%

Calculation and test analysis for power frequency electromagnetic field of transmission line crossing agricultural greenhouse area

Fang

et al. 2023

J. Phys.: Conf. Ser.

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To assess the electromagnetic environment (EME) of high-voltage AC transmission lines (TLs) across agricultural greenhouses (AGs), a program that can calculate the power frequency electromagnetic field (PFEMF) under various AC TLs is compiled based on the principle of the simulated charge method and the simulated current method, and the power frequency electric field (PFEF) and magnetic field (MF) strength of AGs are calculated and compared with the field measurement results. The results show that the field measurement values of PFEF intensity and magnetic induction intensity in AGs do not exceed the standard requirements of 10kV/m and 0.1mT. The existence of AGs has a certain influence on the electric field (EF) distribution, but has little influence on the power frequency magnetic field (PFMF). For the PFEF and PFMF in AGs, the numerical calculation results are basically consistent with the field measurement results. The above results provide a reference for the EME assessment of high-voltage AC TLs across AGs.

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Section: The Basic Principle Of the Analog Current Methodsmentioning

confidence: 99%

Calculation and test analysis for power frequency electromagnetic field of transmission line crossing agricultural greenhouse area

Fang

et al. 2023

J. Phys.: Conf. Ser.

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“…As one of the boundary division method, CSM can be applied to calculate the unbounded electric field, space charge, and gas discharge with higher calculation precision [18–22]. GFCSM is a modification to the traditional CSM, where the computational basis is still the principle of electric field uniqueness.…”

Section: Numerical Computation Methods Of Rsm‐gfcsmmentioning

confidence: 99%

Research on transient insulation numerical analysis method of circuit breaker in GIS under lightning impulse voltage

Liu

Tian

et al. 2019

J. eng.

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“…Reducing their number is possible thanks to the use of special algorithms for irregular dividing of the computational volume [9,10], which significantly complicates the modelling of objects with arbitrary orientation of busbars. In addition, in [11] it is stated that these methods are highly dependent on «human experience and trial and error.» Analytical formulas for determining the electric field strength are given in a number of works, in particular in [6,8]. They are, as a rule, easier to use, the mathematical expression shows the dependence of the field on all parameters of the line [6], they do not require significant computer resources.…”

mentioning

confidence: 99%

“…Taking into account that in the distribution devices of electrical stations and substations, the busbar is arbitrarily oriented in space, there are several voltage classes, split phases of different diameters, etc., the use of existing analytical expressions for them is practically impossible. In [4,11], the implementation of the charge simulation method is proposed, which is actually a combination of numerical and analytical solutions for modelling the field of a substation with a voltage class of 500/220 kV, but in these works it is noted that the given method has similar disadvantages to numerical calculation methods.…”

mentioning

confidence: 99%

Determination of the electric field strength of high-voltage substations

Koliushko,

Rudenko,

Tyutyuma

et al. 2023

Electrical Engineering & Electromechanics

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The electric field strength is one of the main factors influencing sensitive microprocessor equipment and personnel on power stations and substations, power lines. Determining its level is an important applied task for ensuring the safe operation of electrical installations. The aim is to develop calculation relationships for determining the electric field strength created by the busbar of high-voltage substations in the working areas of personnel. The solution of the problem was based on the use of the method of equivalent charges to determine the strength of the electric field created by the complex busbar of high-voltage substations. Methodology. The development was based on solving the problem of the potential of the electric field of a point charge located in a dielectric half-space for a cylindrical coordinate system. By representing the electrode in the form of a set of point charges and subsequent integration, an expression for calculating the potential is obtained, created by a busbar of arbitrary orientation of finite length in an analytical form. Using the principle of superposition of fields and the definition of the derivative, expressions were obtained for calculating the vertical component of the electric field strength at given heights. Results. Based on the obtained expressions, using Visual Basic, the simulation of the distribution of the electric field strength under a three-phase power line with a voltage of 150 kV was performed. Comparison with the known calculation results obtained on the basis of analytical expressions for infinitely long conductors showed that the obtained expressions have an error of no more than 7%. The scientific novelty lies in the fact that for the first time expressions were obtained for determining the electric field strength created by a system of electrodes of finite length, based on the analytical method for solving differential equations. Practical significance. The proposed technique is implemented as a test module of the LiGro specialized software package, which allows modeling complex busbar systems typical for power stations and substations and power lines. A test calculation was carried out for an operating substation of regional electric networks with a voltage class of 110 kV. By comparing the duration of the calculation of switchgears with a diagonal of about 500 m, it was found that the calculation time in the LiGro complex based on the analytical method is several tens of times less than the calculation based on the finite element method. In addition, a more powerful computer was used for the end element simulation.

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Analysis of electric field inside HV substations using charge simulation method in three dimensional

Cited by 9 publications

References 5 publications

Calculation and test analysis for power frequency electromagnetic field of transmission line crossing agricultural greenhouse area

Calculation and test analysis for power frequency electromagnetic field of transmission line crossing agricultural greenhouse area

Research on transient insulation numerical analysis method of circuit breaker in GIS under lightning impulse voltage

Determination of the electric field strength of high-voltage substations

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