### Abstract

For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed. The most representative and reliable results of making losses: refusals of operation, false and excessive actions take place at definition of their expressions as products of probabilities of corresponding conditions (faults on a protected line and in an external network, normal working operational conditions, asynchronous and open-phase modes, etc.) on conditional probabilities of losses in these conditions. The conditional probabilities are formed on the method SBID (selection the borders of intervals of the in and out data) allowing to define the full probability distribution law (PDL) of all determined or random functional dependences of any dimension on onedimensional PDL of arguments of these dependences. In the case of distance protection line reasonable to approximate PDL response parameter (the measured resistance by distance) to uniform law PDL that has allowed simplifying to calculate conditional probability of the losses and as a whole technical effect. Determining the criteria for technical efficiency is an objective indicator quality of functioning relay protection. Therefore, by its extremum or the nearest approximation to its extremum, determine the meaning and content of each stage distance protection, to determine the optical practical setting of distance protection.

Original language | English |
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Title of host publication | Proceedings of the 6th International Forum on Strategic Technology, IFOST 2011 |

Pages | 512-516 |

Number of pages | 5 |

Volume | 1 |

DOIs | |

Publication status | Published - 2011 |

Event | 6th International Forum on Strategic Technology, IFOST 2011 - Harbin, China Duration: 22 Aug 2011 → 24 Aug 2011 |

### Other

Other | 6th International Forum on Strategic Technology, IFOST 2011 |
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Country | China |

City | Harbin |

Period | 22.8.11 → 24.8.11 |

### Fingerprint

### Keywords

- distance relay protection
- electric network
- probability distribution density (PDD)
- probability distribution function (PDL)
- probability distribution law (PDL)
- technical effect
- Technical efficiency

### ASJC Scopus subject areas

- Management of Technology and Innovation
- Strategy and Management

### Cite this

*Proceedings of the 6th International Forum on Strategic Technology, IFOST 2011*(Vol. 1, pp. 512-516). [6021075] https://doi.org/10.1109/IFOST.2011.6021075

**Using the criterion of technical efficiency for set-up of line distance relay protection.** / Minh, T. H Q; Shmoilov, A. V.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Proceedings of the 6th International Forum on Strategic Technology, IFOST 2011.*vol. 1, 6021075, pp. 512-516, 6th International Forum on Strategic Technology, IFOST 2011, Harbin, China, 22.8.11. https://doi.org/10.1109/IFOST.2011.6021075

}

TY - GEN

T1 - Using the criterion of technical efficiency for set-up of line distance relay protection

AU - Minh, T. H Q

AU - Shmoilov, A. V.

PY - 2011

Y1 - 2011

N2 - For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed. The most representative and reliable results of making losses: refusals of operation, false and excessive actions take place at definition of their expressions as products of probabilities of corresponding conditions (faults on a protected line and in an external network, normal working operational conditions, asynchronous and open-phase modes, etc.) on conditional probabilities of losses in these conditions. The conditional probabilities are formed on the method SBID (selection the borders of intervals of the in and out data) allowing to define the full probability distribution law (PDL) of all determined or random functional dependences of any dimension on onedimensional PDL of arguments of these dependences. In the case of distance protection line reasonable to approximate PDL response parameter (the measured resistance by distance) to uniform law PDL that has allowed simplifying to calculate conditional probability of the losses and as a whole technical effect. Determining the criteria for technical efficiency is an objective indicator quality of functioning relay protection. Therefore, by its extremum or the nearest approximation to its extremum, determine the meaning and content of each stage distance protection, to determine the optical practical setting of distance protection.

AB - For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed. The most representative and reliable results of making losses: refusals of operation, false and excessive actions take place at definition of their expressions as products of probabilities of corresponding conditions (faults on a protected line and in an external network, normal working operational conditions, asynchronous and open-phase modes, etc.) on conditional probabilities of losses in these conditions. The conditional probabilities are formed on the method SBID (selection the borders of intervals of the in and out data) allowing to define the full probability distribution law (PDL) of all determined or random functional dependences of any dimension on onedimensional PDL of arguments of these dependences. In the case of distance protection line reasonable to approximate PDL response parameter (the measured resistance by distance) to uniform law PDL that has allowed simplifying to calculate conditional probability of the losses and as a whole technical effect. Determining the criteria for technical efficiency is an objective indicator quality of functioning relay protection. Therefore, by its extremum or the nearest approximation to its extremum, determine the meaning and content of each stage distance protection, to determine the optical practical setting of distance protection.

KW - distance relay protection

KW - electric network

KW - probability distribution density (PDD)

KW - probability distribution function (PDL)

KW - probability distribution law (PDL)

KW - technical effect

KW - Technical efficiency

UR - http://www.scopus.com/inward/record.url?scp=80053433713&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053433713&partnerID=8YFLogxK

U2 - 10.1109/IFOST.2011.6021075

DO - 10.1109/IFOST.2011.6021075

M3 - Conference contribution

AN - SCOPUS:80053433713

SN - 9781457703966

VL - 1

SP - 512

EP - 516

BT - Proceedings of the 6th International Forum on Strategic Technology, IFOST 2011

ER -