### 抄録

This paper describes a method to estimate how much power will drop after severe generation outage. When a large generation outage occurs, system frequency plummets to an unacceptable frequency level. Frequency drop affects both customers and generation systems. Thus adequate and quick load-shedding must be done to prevent problems. To institute any load-shedding policy effectively, the size of the generation outage must be precisely estimated in a very short time. So far, several methods have been proposed to estimate the power outage amount by measuring the decaying frequency variations that are obtained at each local bus. These methods are easily applied, but cannot be expected to provide good results in real power system operations because of the noises that are a part of decaying frequency variations. To cope with this problem, a new estimation method based on one that uses the dominating differential equation is proposed in this paper. The most precise estimation at this point is obtained by using additional factors, such as the sine wave included in the decaying frequency fluctuations and considered as a part of the equation. Simulation studies on a model power system consisting of five generating stations and four load points show that the newer method is encouraging.

元の言語 | English |
---|---|

ページ（範囲） | 39-48 |

ページ数 | 10 |

ジャーナル | Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) |

巻 | 118 |

発行部数 | 3 |

出版物ステータス | Published - 1997 |

外部発表 | Yes |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering

### これを引用

**Estimation of power outage size based on the dominating differential equation.** / Fujita, Goro; Shirai, Goro.

研究成果: Article

*Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)*, 巻. 118, 番号 3, pp. 39-48.

}

TY - JOUR

T1 - Estimation of power outage size based on the dominating differential equation

AU - Fujita, Goro

AU - Shirai, Goro

PY - 1997

Y1 - 1997

N2 - This paper describes a method to estimate how much power will drop after severe generation outage. When a large generation outage occurs, system frequency plummets to an unacceptable frequency level. Frequency drop affects both customers and generation systems. Thus adequate and quick load-shedding must be done to prevent problems. To institute any load-shedding policy effectively, the size of the generation outage must be precisely estimated in a very short time. So far, several methods have been proposed to estimate the power outage amount by measuring the decaying frequency variations that are obtained at each local bus. These methods are easily applied, but cannot be expected to provide good results in real power system operations because of the noises that are a part of decaying frequency variations. To cope with this problem, a new estimation method based on one that uses the dominating differential equation is proposed in this paper. The most precise estimation at this point is obtained by using additional factors, such as the sine wave included in the decaying frequency fluctuations and considered as a part of the equation. Simulation studies on a model power system consisting of five generating stations and four load points show that the newer method is encouraging.

AB - This paper describes a method to estimate how much power will drop after severe generation outage. When a large generation outage occurs, system frequency plummets to an unacceptable frequency level. Frequency drop affects both customers and generation systems. Thus adequate and quick load-shedding must be done to prevent problems. To institute any load-shedding policy effectively, the size of the generation outage must be precisely estimated in a very short time. So far, several methods have been proposed to estimate the power outage amount by measuring the decaying frequency variations that are obtained at each local bus. These methods are easily applied, but cannot be expected to provide good results in real power system operations because of the noises that are a part of decaying frequency variations. To cope with this problem, a new estimation method based on one that uses the dominating differential equation is proposed in this paper. The most precise estimation at this point is obtained by using additional factors, such as the sine wave included in the decaying frequency fluctuations and considered as a part of the equation. Simulation studies on a model power system consisting of five generating stations and four load points show that the newer method is encouraging.

KW - Dominating differential equation

KW - Generation outage fault

KW - Inverse problem

KW - Load shedding

KW - Supplemental information

UR - http://www.scopus.com/inward/record.url?scp=0031073993&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031073993&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031073993

VL - 118

SP - 39

EP - 48

JO - Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)

JF - Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)

SN - 0424-7760

IS - 3

ER -