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Proceedings ArticleDOI

Algorithm development for Power System Contingency screening and ranking using Voltage-Reactive Power Performance Index

01 Nov 2016-pp 2232-2235
TL;DR: In this article, a MATLAB program that screened and ranked all the n-2 and n-1 contingencies present in IEEE 14-bus system has been used to determine the severity of each outage case, the researchers used Performance Indices specifically the Voltage-Reactive Performance index as an indicator whether the outage happened is critical or not.
Abstract: Contingency Analysis is an analysis of a power system to determine the severity of an outage to the whole system. In this paper, the researchers made a MATLAB program that screened and ranked all the n-2 and n-1 contingencies present in IEEE 14-Bus System. Over all, IEEE 14-Bus system has 5 generators and 20 transmission lines comprising of 325 possible outage cases. The researchers used Fast Decoupled Load Flow method for the load flow analysis of the system for each outage case since it is more simplified than other methods. Also, to determine the severity of each outage cases, the researchers used Performance Indices specifically the Voltage-Reactive Performance index as an indicator whether the outage happened is critical or not. With this MATLAB program, power system operator can easily determine the severity of the outage of a given power system and what action must be done.
Citations
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Proceedings ArticleDOI
01 Feb 2020
TL;DR: This paper discusses about the severity of line by ranking the contingency with and without STATCOM, the most severe line by evaluating the overall performance index (OPI) of power system.
Abstract: As world is approaching towards the deregulated power system so daily load demand is increasing in unexpected way Voltage instability will occurs due to increment in load or with highly loaded system Security analysis of power system becomes the more imperative aspect to secure the system with concealed contingency So contingency ranking becomes the important procedure to rank the most severe line by evaluating the overall performance index (OPI) By incorporation of STATCOM in the system OPI value observed to reduce which may change the ranking of contingency but line becomes more severe This paper discusses about the severity of line by ranking the contingency with and without STATCOM Newton Raphson load flow analysis is perform to evaluate the voltage and active power performance index IEEE 24 bus system (RTS-79) is used for the testing of security by ranking the most severe lines using MATLAB

4 citations


Cites background from "Algorithm development for Power Sys..."

  • ...Voltage angle and reactive power performance index can be also a studies to ascertain the system performance [2]....

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Proceedings ArticleDOI
01 Jan 2020
TL;DR: Newton Raphson power flow equations developed in Matlab environment are used for these analyses while IEEE 30 bus network is the test system.
Abstract: Line outage contingency ranking and analyses using various Performance Index (PI) approaches are investigated in this study. Independent contingency rankings based on voltage, real power, reactive power, voltage fused with reactive power and real power amalgamated with voltage fused reactive power PI are the ranking methods used. Analyses of most severe contingencies resulting from different ranking methods are carried out and the behavioural patterns of the affected transmission lines investigated and validated. Newton Raphson power flow equations developed in Matlab environment are used for these analyses while IEEE 30 bus network is the test system. Line 28–27 outage which is the most severe contingency based on voltage PI ranking resulted into both line overloads and bus voltage limits violations, while outage of line 2–5 which is the most severe contingency consequent of real power PI ranking only resulted into line thermal limits violations.

4 citations


Cites methods from "Algorithm development for Power Sys..."

  • ...Equations describing PI are as follows [5-10];...

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  • ...Voltage fused with reactive power PI was applied for contingency screening and ranking in another work conducted in [8], using fast decoupled load flow equations....

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Book ChapterDOI
01 Jan 2022
TL;DR: The researcher used the fast decoupled load flow method for the load flow analysis of the system considering all possible existing line outages in the system and will help the system engineer evaluate the power system network’s operating condition when a line outage will occur and tell him what essential steps should be adopted to nullify the consequences of a particular line outage.
Abstract: Power system security is one of the major parts of the electrical system. A power system should be robust enough to detect any kind of disturbance that can occur in the network and analyze its impact on the system. Disturbance in the power system network includes any kind of faults related to the generator, load, and transmission line. Due to the complex nature of the power system network, to protect the power system against any kind of outages, contingency analysis is used. In steady-state conditions, to evaluate the security of system contingency analysis solution is required. It includes the analysis of a system during outages or failure of equipment. Outages in a power system network can take place either due to maloperation of any internal component or due to natural calamities like lightning, tree fall, storm, and bad weather or it can also occur due to overloading of transmission lines, generators, etc. To effectively analyze the impact of individual contingencies on the power system network, performance indices or severity indices are used to rank the contingencies based on their severity. The performance index is the sum of the two indexes named as active power performance index and voltage performance index. In this paper, the researcher made a MATLAB program is utilized that screened on two standard benchmark test systems IEEE-5 and IEEE 15 bus system. The researcher used the fast decoupled load flow method for the load flow analysis of the system considering all possible existing line outages in the system. This contingency analysis will help the system engineer to evaluate the power system network’s operating condition when a line outage will occur and tell him what essential steps should be adopted to nullify the consequences of a particular line outage.

2 citations

Proceedings ArticleDOI
01 Dec 2019
TL;DR: A procedure to run N-1 contingencies by using load forecasting obtained from historical records to know the assets in the system that present overloads or voltages outside of the security limits and can affect the security operation of system in a horizon of 24 h is proposed.
Abstract: To improve decision-making during contingencies in power systems and reduce the impact while a failure is repaired, it is necessary to know the consequences oflosing different elements of the system. These consequences need to consider the current system conditions and the short-term forecasting of the demand. Hence, this work proposes a procedure to run N-1 contingencies by using load forecasting obtained from historical records. This allows to know the assets in the system that present overloads or voltages outside of the security limits and can affect the security operation of system in a horizon of 24 h. To validate the procedure, the IEEE transmission system of 39 buses was used. To forecast the load, a script in Python using historical load profiles was implemented. To generate the list of assets with violations during contingencies, the pandapower module of Python was used in order to run the load flow. As a result, a list of affected assets was obtained per each hour of the day when lines and transformers were disconnected.

1 citations


Cites background from "Algorithm development for Power Sys..."

  • ...Most of them are associated with improving the speed of the CA report and solving contingencies of higher order than N-1 [5],[6]....

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References
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Book
01 Jan 1984
TL;DR: In this paper, the authors present a graduate-level text in electric power engineering as regards to planning, operating, and controlling large scale power generation and transmission systems, including characteristics of power generation units, transmission losses, generation with limited energy supply, control of generation, and power system security.
Abstract: Topics considered include characteristics of power generation units, transmission losses, generation with limited energy supply, control of generation, and power system security. This book is a graduate-level text in electric power engineering as regards to planning, operating, and controlling large scale power generation and transmission systems. Material used was generated in the post-1966 period. Many (if not most) of the chapter problems require a digital computer. A background in steady-state power circuit analysis is required.

6,344 citations

Book
28 Aug 2006
TL;DR: In this paper, modern power system analysis was used to analyze modern power systems and their relationship with modern power control systems, including the power control system analysis and power control control systems.
Abstract: Modern power system analysis , Modern power system analysis , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

605 citations

Journal ArticleDOI
01 Jun 1982
TL;DR: Modern power system analysis, Modern power systemAnalysis, مرکز فناوری اطلاعات, کسورزی, امیران رسانی , اوشاوρز عاعد, £1,000, £2,500, £3,000 per megawatt-hour.

529 citations

Journal ArticleDOI
TL;DR: A fast technique has been developed for the automatic ranking and selection of contingency cases for a power system contingency analysis study and results of this technique applied to different test systems are presented.
Abstract: A fast technique has been developed for the automatic ranking and selection of contingency cases for a power system contingency analysis study. A contingency list is built containing line and generator outages which are ranked according to their expected severity as reflected in voltage level degradation and circuit overloads. An adaptive contingency processorcan be set up by performing sequential contingency tests starting with the most severe contingencies at the top of the list and proceeding down the list, stopping when the severity goes below a threshold. Computational results of this technique applied to different test systems are presented.

466 citations

Journal ArticleDOI
Abstract: On-line steady-state security analysis requires the evaluation of the effects of a large number of possible contingencies on a power system. Almost all contingency analysis programs have had to rely on a list of selected contingencies to be studied. The brute force approach of testing all contingencies every time an evaluation of the system performance is needed, becomes prohibitive due to its computational burden. A particularly attractive technique is to utilize a fast, approximate method to select the few contingencies that actually affect the security of the power system and then analyze only these cases in more detail. The contingency ranking and selection methods presented in the literature have all ranked outage cases on the basis of transmission line overloads. This limits the usefulness of these technqiues as contingencies that cause only voltage problems are totally overlooked. This paper shows that there is little correlation between the contingencies that produce line overloads and those that result in unacceptable voltage profiles, further establishing the need for a contingency selection method that is also voltage sensitive. Such a method, using the first iteration of an AC power flow, is presented. It is shown that the method meets both the speed and accuracy requirements for on-line use.

152 citations


"Algorithm development for Power Sys..." refers methods in this paper

  • ...System loading conditions greatly affect the voltage magnitudes and reactive powers at different buses.[2] Due to advantages of Fast Decoupled Load Flow and Voltage-Reactive Power Performance Index (PIVQ), researchers are interested to investigate the effect of using Fast Decoupled Load Flow and VoltageReactive Power Load Flow for the contingency analysis of a given power system whether it will give an accurate or non-reliable results....

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