Ground Resistance Measurement With Alternative Fall-of-Potential Method

Korasli, C.

doi:10.1109/tpwrd.2004.833922

Cited by 19 publications

(5 citation statements)

References 3 publications

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“…Similarly, when measuring the GPR of a grounding system, it is impossible to place the voltage electrode at infinity [ 25 ]. In the measurement of the fall-of-potential method [ 26 , 27 , 28 , 29 ], the position of the voltage electrode needs to be continuously adjusted. The position distribution of the voltage electrode and the current electrode in the test is shown in Figure 1 , which shows the commonly used arrangement when using the fall-of-potential method to measure the grounding resistance.…”

Section: Methodsmentioning

confidence: 99%

Simulation and Experiment of Substation Grounding Resistance Measurement Based on Pseudorandom Signal

Duan

Zou

et al. 2022

Sensors

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The grounding resistance of a substation is an important parameter that should be designed within a reasonable range to prevent operational accidents from damaging electrical equipment due to overvoltage and ensure the safe operation of an electrical system. However, simply and accurately measuring the grounding resistance of a substation has been a difficult problem faced by engineers and technicians for a long time. This paper proposes a method of denoising by applying the m-sequence correlation identification technology to the measurement of substation resistance. We established a grounding resistance model of a grounding grid and used LabVIEW to simulate it. Based on system identification and correlation function theory, pseudorandom signals or sinusoidal signals were used as excitation signals. The output results of the system were compared when pseudorandom signals and sinusoidal signals were used as excitation signals. It was verified that the grounding resistance value measured by a pseudorandom signal was closer to the actual value, which met the design requirements. Laboratory test results verify that the method of calculating grounding resistance based on the correlation analysis method is feasible.

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Section: Methodsmentioning

confidence: 99%

Simulation and Experiment of Substation Grounding Resistance Measurement Based on Pseudorandom Signal

Duan

Zou

et al. 2022

Sensors

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“…However in actual wiring, long distance wiring is not possible. Three-pole compensation method was usually used in the grounding resistance detection, and it's principle is shown in Figure 1 [1][5] [6] . Using electric field intensity formula E Jρ = and potential equation…”

Section: Detection Principlementioning

confidence: 99%

Implementation of portable common building ground resistance measuring instrument

Lu¹,

Chen²,

Wu³

et al. 2015

Proceedings of the First International Conference on Information Sciences, Machinery, Materials and Energy

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According to the defect of the building ground resistance measuring device presently. A new system of building ground resistance detection which based on STM32 was proposed. This scheme was based on the principle of three-pole compensation method. Hardware and software of the master-slave machine which controlled by embedded system was applied to achieve accurate measurement of ground resistance. The detection system included synthesizer of alternating current, signal collecting and data processing platform. The detection system was consisted of a STM32 control which product alternating current with high precision frequency and waveform stability into the grounding grid. The signal of voltage and current in the grounding grid were translated into a precise grounding resistance value through band-pass filter, differential amplify, synchronous AD conversion, FFT processing. The detection system could improve the detection accuracy and efficiency, and realize the intelligent testing work.

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“…The simulation for the proposed novel position for the potential probe was completed under different electrode length with 14 mm diameter. Equations (9), (10) and (13) are used to complete the simulation that is shown in Fig. 8.…”

Section: Fall Of Potentialmentioning

confidence: 99%

“…Choi et al [9] nominated the separation between the tested grid and the current probe to be in the order of 2.37 times the dimension of the grid under test. The research in [10][11][12] covers the FOP method; however, there is no dimension in the papers to relate the grid size with the current lead length. The work in [13]i s based on current lead lengths of more than ten times the electrode length.…”

Section: Introductionmentioning

confidence: 99%

“…In many cases, the locations of the HV infrastructure within high-density area do not provide large testing area. As shown in [6][7][8][9][10][11][12][13][14], in order for the FOP to yield accurate results, large separation must be established between the current probe and the tested grid. Therefore the use of the FOP for short separation between the tested grid and the current probe will not yield accurate results.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of novel position for the current and potential probe for the fall of potential method

Nassereddine

Rizk

Hellany

et al. 2014

IET Generation, Transmission & Distribution

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Ground Resistance Measurement With Alternative Fall-of-Potential Method

Cited by 19 publications

References 3 publications

Simulation and Experiment of Substation Grounding Resistance Measurement Based on Pseudorandom Signal

Simulation and Experiment of Substation Grounding Resistance Measurement Based on Pseudorandom Signal

Implementation of portable common building ground resistance measuring instrument

Estimation of novel position for the current and potential probe for the fall of potential method

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