Method for Determining Parameters of Isolation Network Voltage up to 1000 V in Mining Enterprises

Utegulov, Bolatbek; Utegulov, Arman; Begentayev, Meiram; Begentayev, Bagustar; Uakhitova, Aigul; Zhumazhanov, Serik; Zhakipov, Nazhmitden

doi:10.2316/p.2011.756-028

Cited by 3 publications

(5 citation statements)

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“…In case of equal voltage, magnitude of admittance will correspond to the value of variable resistance, which is connected between the phase of network and earth. The method for measuring the admittance of insulation in a network with an isolated neutral voltage up to 1000 V will provide improved accuracy and speed measurement admittance network insulation [32].…”

Section: The Methods Of Measuring the Admittance In A Network With An mentioning

confidence: 99%

“…Switching device QF1 connects the adjustable additional conductance go, making the regulation of the magnitude of additional conductance to achieve the equality of the modulus of the phase voltage to earth and the zero phase-sequence voltage. In this case, the value of additional conductance will fit the admittance of network [32].…”

Section: The Methods Of Measuring the Admittance In A Network With An mentioning

confidence: 99%

“…For simplicity of measurements, consider a method for measuring the admittance of insulation in a network with an isolated neutral voltage up to 1000 V [7]:…”

Section: Theoretical Studies Of the Insulation On The Basis Of A Circmentioning

confidence: 99%

“…Capacitive susceptance of isolation is found as a geometric difference between the admittance of insulation and conductance [7].…”

Section: Theoretical Studies Of the Insulation On The Basis Of A Circmentioning

confidence: 99%

“…For experimental studies of the state of insulation of three-phase electrical networks with isolated neutral with voltages up to and above 1000 V, a number of methods were proposed [1][2][3][4][5][6][7][8][9], taking into account the inherent specific characteristics in the internal power supply of open-cast mining. For the insulation parameters measuring methods, a number of requirements are presented, namely:…”

Section: Introductionmentioning

confidence: 99%

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Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

Utegulov¹

2019

Industrial Engineering

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In the practice of operating mining machines and complexes, there are no effective ways to monitor the state of insulation and protect a person from electric shock in a network with voltages up to 1000 V. There is a risk of electric shock with a fatal outcome for personnel. Consequently, the issue of development of methods for monitoring the state of insulation and protection against electric shock in a network up to 1000 V for mining machines and complexes is relevant and urgent. The existing protection of a person from electric shock effectively works provided that the total insulation resistance is commensurate with the capacitive insulation resistance of the phases of the electrical network relative to the ground. But, at mining enterprises, a violation of ratio takes place between the total and capacitive insulation resistance of the network, which leads to failure of the protection against electric shock. Therefore, to ensure electrical safety criteria when operation of electrical installations in the network is up to 1000 V, it is necessary to consider the insulation condition and the technical capabilities of available protection against electric shock in a complex.

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Section: The Methods Of Measuring the Admittance In A Network With An mentioning

confidence: 99%

Section: The Methods Of Measuring the Admittance In A Network With An mentioning

confidence: 99%

“…For simplicity of measurements, consider a method for measuring the admittance of insulation in a network with an isolated neutral voltage up to 1000 V [7]:…”

Section: Theoretical Studies Of the Insulation On The Basis Of A Circmentioning

confidence: 99%

“…Capacitive susceptance of isolation is found as a geometric difference between the admittance of insulation and conductance [7].…”

Section: Theoretical Studies Of the Insulation On The Basis Of A Circmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

Utegulov¹

2019

Industrial Engineering

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The method of determining the insulation parameters in three-phase electrical networks with isolated neutral with voltages up to and above 1000 V

Utegulov

2016

IOP Conf. Ser.: Earth Environ. Sci.

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In work the new method of definition of isolation's parameters in a three-phase symmetric electrical network with isolated neutral which is based on measurement of modules sizes of a linear voltage, voltages of phases С and A concerning to ground, after connection of active additional conductivity between phase A of electrical network and ground is shown and the analysis of a blunder of the developed method is made. The analysis of a blunder has shown, that the developed method provides satisfactory accuracy at definition of isolation's parameters, and also simplicity and the safety of operations in working electro installations of up to above 1000 V voltage.

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Development of mathematical models of digital protection devices from a single phase earth faults in networks with voltage 6–10 kV

Utegulov

2016

2016 2nd International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM)

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Method for Determining Parameters of Isolation Network Voltage up to 1000 V in Mining Enterprises

Cited by 3 publications

References 0 publications

Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

Special Issues of Ensuring Electrical Safety in Networks with Isolated Neutral Voltage up to 1000 V at Mining Enterprises

The method of determining the insulation parameters in three-phase electrical networks with isolated neutral with voltages up to and above 1000 V

Development of mathematical models of digital protection devices from a single phase earth faults in networks with voltage 6–10 kV

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