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Power System Analysis by Nagoor Kani: A Review

Power System Analysis by Nagoor Kani: A Review

Power System Analysis by Nagoor Kani is a textbook that covers the basic fundamentals of power system analysis with detailed illustrations and explanations. The book is designed for undergraduate students in electrical engineering who want to learn about power system modeling, load flow studies, symmetrical and unsymmetrical fault analyses, stability analysis, etc. The book also provides exercises, short-answer questions, and solutions to university questions for self-practice and better scoring.

The book has a clear and lucid style of presentation, with carefully chosen examples that are given with a systematic approach. The book also covers some advanced topics such as nonlinear control systems, modern design concepts of continuous and discrete time control systems, and bode plot, polar plot and root locus in exact graph sheets with proper scale. The book is available in both print and digital formats, and can be downloaded as a pdf file from various online sources.

power system analysis by nagoor kani pdf download

Some of the features of the book are:

  • Cogent and lucid style of presentation.

  • Clear explanations of concepts with appropriate illustrations.

  • Examples with detailed explanations.

  • Systematic, step-by-step approach to solved problems.

  • Short-answer questions to recapitulate the basics.

  • Exercises at the end of each chapter for self-practice.

  • Solution to university questions for better scoring.

  • Bode plot, polar plot and root locus are presented in exact graph sheets with proper scale.

The book is written by A. Nagoor Kani, who is a professor of electrical engineering at Anna University, Chennai. He has authored several books on electrical engineering topics such as control systems, power electronics, signals and systems, etc. He has also received several awards and honors for his academic excellence and contributions to the field of engineering education.

Power System Analysis by Nagoor Kani is a comprehensive and useful book for students who want to learn about the analysis and design of power systems. It is also a valuable reference for practicing engineers and researchers who want to update their knowledge on the latest developments in power system engineering.

Some of the applications of power system analysis are:

  • Load Flow Analysis: The studies determine the voltage, current, active, and reactive power and power factor in a power system. Load flow studies are an excellent tool for system planning. The studies can be used to determine the optimum size and location of capacitors for power factor improvement. Also, they are very useful in determining system voltages under conditions of suddenly applied or disconnected loads. The results of a load flow study are also starting points for stability studies. Digital computers are used extensively in load flow studies due to the complexity of the calculations involved[^3^].

  • Short Circuit Analysis: Short-circuit studies help to determine the magnitude of the fault currents flowing throughout the power system at various time intervals. The magnitude of the currents after a fault vary with time until they reach a steady-state condition. This behavior is due to system characteristics and dynamics. This is done for various types of faults (three-phase, phase-to-phase, double-phase-to-ground, and phase-to-ground) at different locations throughout the system. The information is used to select fuses, breakers, and switchgear ratings in addition to setting protective relays[^3^].

  • Stability Analysis: The ability of a power system (two or more synchronous machines) to operate after a change on the system is a measure of its stability. The stability problem takes two forms: steady-state and transient. Steady-state stability is the ability of a power system to maintain synchronism between machines following relatively slow load changes. Transient stability is the ability of the system to remain in synchronism under transient conditions, i.e., faults, switching operations, etc. In an industrial power system, stability may involve the power company system and one or more in-plant generators or synchronous motors. Contingencies, such as load rejection, sudden loss of a generator or utility tie, starting of large motors or faults, have a direct impact on system stability. Load-shedding schemes and critical fault-clearing times can be determined in order to select the proper settings for protective relays. These types of studies are probably the single most complex ones done on a power system. A simulation will include synchronous generator models with their controls, i.e., voltage regulators, excitation systems, and governors[^3^].

  • Motor Starting Analysis: Motor starting studies are performed to determine the effects of starting large motors on the power system. The studies can evaluate voltage dips, motor acceleration time, motor torque-speed curves, etc. The studies can also help in selecting appropriate starting methods such as direct-on-line (DOL), star-delta (Y-D), auto-transformer (AT), soft starter (SS), variable frequency drive (VFD), etc[^3^].

  • Harmonic Analysis: Harmonic analysis studies are performed to identify and quantify harmonic distortion in the power system caused by nonlinear loads such as rectifiers, inverters, variable speed drives, arc furnaces, etc. Harmonic distortion can affect power quality and equipment performance by causing overheating, resonance, interference, malfunctioning, etc. The studies can help in designing harmonic filters and mitigating devices to reduce harmonic distortion to acceptable levels[^3^].

  • Switching Transient Analysis: Switching transient analysis studies are performed to evaluate the effects of switching operations such as energizing or de-energizing transmission lines, transformers, capacitors, reactors, etc on the power system. Switching transients can cause overvoltages or undervoltages that can damage equipment or cause insulation failure. The studies can help in selecting appropriate switching devices and surge arresters to protect the system from switching transients[^3^].

  • Reliability Analysis: Reliability analysis studies are performed to assess the ability of the power system to supply adequate and secure power to the loads under normal and abnormal conditions. Reliability analysis can be done at different levels such as component level, subsystem level, or system level. Reliability indices such as loss of load probability (LOLP), loss of load expectation (LOLE), expected energy not supplied (EENS), etc can be calculated to measure the reliability performance of the power system[^3^].

Cable Ampacity Analysis: Cable ampacity analysis studies are performed to determine the current carrying capacity of underground cables under different operating conditions such as soil temperature, soil thermal resistivity, cable depth, cable spacing, cable configuration, etc. Cable ampacity analysis can help 29c81ba772


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