• Aucun résultat trouvé

voltage stability and security

Preventive assessment and enhancement of power system voltage stability: an integrated approach of thermal and voltage security

Preventive assessment and enhancement of power system voltage stability: an integrated approach of thermal and voltage security

... unstable voltage evolution or leads to branch currents above their physical ...long-term voltage stability and thermal overload analysis, the relevant contingencies are outages of transmission ...

175

The Continuation Power Flow: A Tool for Parametric Voltage Stability and Security Analysis

The Continuation Power Flow: A Tool for Parametric Voltage Stability and Security Analysis

... The purpose ofthe continuation power flow is to find a continuum of power flow solutions for a given load and/or generation.. vadations [3].[r] ...

6

The Amalgamation of SVR and ANFIS Models with Synchronized Phasor Measurements for On-Line Voltage Stability Assessment

The Amalgamation of SVR and ANFIS Models with Synchronized Phasor Measurements for On-Line Voltage Stability Assessment

... Keywords: voltage stability; phasor measurement unit; support vector regression; adaptive neuro-fuzzy inference system; ant lion optimizer ...the voltage instability problem has become an imperative ...

18

Contingency severity assessment for voltage security using non-parametric regression techniques

Contingency severity assessment for voltage security using non-parametric regression techniques

... to voltage se- curity assessment exploiting non-parametric regression techniques to extract simple and at the same time reliable models of the severity of a contingency, defined as the difference between ...

7

Assessing reactive power reserves with respect to operating constraints and voltage stability

Assessing reactive power reserves with respect to operating constraints and voltage stability

... constraints and voltage stability Florin Capitanescu Abstract—This paper proposes a two-step approach to evaluate reactive power reserves with respect to operating constraints and ...

11

Preventive control of voltage security margins: A multicontingency sensitivity-based approach

Preventive control of voltage security margins: A multicontingency sensitivity-based approach

... keep voltage security margins with respect to contingencies above some minimal ...generation and a load area or between two generation ...linear voltage security constraints are ...

7

Computation of simultaneous available transfer capability under thermal and voltage security constraints

Computation of simultaneous available transfer capability under thermal and voltage security constraints

... when voltage and thermal aspects are strongly coupled, in which case the full AC load flow model would be more ...for voltage stability ...

6

Power System Voltage Stability Assessment Using a Hybrid Approach Combining Dragonfly Optimization Algorithm and Support Vector Regression

Power System Voltage Stability Assessment Using a Hybrid Approach Combining Dragonfly Optimization Algorithm and Support Vector Regression

... for security assessment, which has been discussed in [ 10 ...system security which are normal, alert, emergency_1 and emer- ...for security assessment [ 11 ]. SVR was introduced into volt- age ...

14

Emergency Voltage Stability Controls: an Overview

Emergency Voltage Stability Controls: an Overview

... of security may lead the Transmission System Operator (TSO) to decrease the posted available transfer ca- pabilities, to reschedule generation, to request some units to be kept in operation for voltage ...

10

An advanced tool for Preventive Voltage Security Assessment

An advanced tool for Preventive Voltage Security Assessment

... nominal voltage, whathever the power ...generators and 230 ...the voltage near Québec City after the most severe contingency (applied at t= 1 s), at four levels of pre-contingency stress S : 0, ...

9

Voltage Stability Monitoring, Instability Detection and Control

Voltage Stability Monitoring, Instability Detection and Control

... any stability index could be used within voltage stability monitoring scheme but the following show the best promises to be used to this purpose:  Voltage magnitudes at critical locations ...

17

Supervisory hybrid model predictive control for voltage stability of power networks

Supervisory hybrid model predictive control for voltage stability of power networks

... US and Canada [1], Italy, and The Netherlands due to power outages have shown the crucial role of a reliable operation of electricity distribution and transmission ...reliable and efficient ...

7

Security requirements analysis based on security and domain ontologies

Security requirements analysis based on security and domain ontologies

... deposit and dissemination of sci- entific research documents, whether they are pub- lished or ...teaching and research institutions in France or abroad, or from public or private research ...

4

2017 — Optimal power flow considering voltage stability with significant wind penetration

2017 — Optimal power flow considering voltage stability with significant wind penetration

... of stability evaluation (QV curve obtained from the conventional PF approach and the dynamic ...approach and there is no operating point in the QV ...PV and QV curves cannot consider the ...

175

K-stability and parabolic stability

K-stability and parabolic stability

... c and Ω · [E j ± ] that appear in the above discussion can be chosen to be rational and we may assume that we have a K¨ahler class Ω ∈ H 2 ( b X , ...c and Ω · [E j ± ] sufficiently ...

21

Using Security and Domain ontologies for Security Requirements Analysis

Using Security and Domain ontologies for Security Requirements Analysis

... deposit and dissemination of sci- entific research documents, whether they are pub- lished or ...teaching and research institutions in France or abroad, or from public or private research ...

8

Parallel fuzzy logic and PI controller for transient stability and voltage regulation of power system including wind turbine

Parallel fuzzy logic and PI controller for transient stability and voltage regulation of power system including wind turbine

... system stability; Fuzzy Logic; PI Controller; Wind Turbine; Voltage ...planning and control, because instability may produce adverse effects on the robust structure of ...0.2 and 2.0 Hz, i.e., ...

6

RFID Security and Privacy

RFID Security and Privacy

... area and should provide a detailed guidance for the creation of a PIA ...implementations and protection of personal data but nevertheless support RFID operators‟ and service providers‟ business ...

15

HCI and Security Systems

HCI and Security Systems

... a security system and users are often described as the weakest link in the security ...roles and demands placed on users of security systems, and explore design solutions that ...

4

Information Security Theory and Practice

Information Security Theory and Practice

... academic and corporate ...papers and 2 were accepted as short papers after a double-blind review by our Program Committee comprised of 44 members, leading to a full acceptance rate of ...28.5% and an ...

11

Show all 10000 documents...

Sujets connexes