Power System Book By Cl Wadhwa Free Download Pdf
Takeshi Krueger
The book provides a clear, systematic and exhaustive exposition of the various dimensions of electrical power systems, both at basic and advanced levels, explained and illustrated through solved examples.
* Fundamentals of power systems, line constant calculations and performance of overhead lines
* Mechanical design of lines, HVDC lines, corona, insulators and insulated cables
* Voltage control, neutral grounding and transients in power systems
* Fault calculation, protective relays including digital relays and circuit breakers
* Power systems synchronous stability and voltage stability
* Insulation coordination and over voltage protection
* Modern topics like load flows, economic load dispatch, load frequency control and compensation in power system.
* State estimation in power systems, unit commitment, economic scheduling of hydrothermal plants and optimal power flows
* Zbus formulation, power transformers and synchronous machines as power system elements
* Large number of solved examples, practice problems and multiple choice questions.
In a clear and systematic manner, this book presents an exhaustive exposition of the various dimensions of electrical power systems. Both basic and advanced topics have been thoroughly explained and illustrated through solved examples. Important features of the book: Fundamentals of power systems, line constant calculations and performance of overhead lines have been discussed. Mechanical design of lines, HVDC lines, Corona, Insulators and Insulated cables have been explained. Voltage control, Neutral grounding and Transients in power systems explained. Fault calculation, protective relays including digital relays and circuit breakers discussed in that order. Power systems synchronous stability and voltage stability explained. Insulation coordination and overvoltage protection explained. Modern topics like load flows, Economic load dispatch, Load frequency control and compensation in power system nicely developed and explained using Flow Charts wherever required. Zbus Formulation, power transformers and synchronous machines as power system elements highlighted. Large number of solved examples, practice problems and multiple choice questions included. Answers to problems and multiple choice questions provided. With all these features, this is an invaluable textbook for undergraduate electrical engineering students of Indian and foreign universities. AMIE, GATE, all competitive examination candidates and practicing engineers would also find this book very useful.
But then kind of unexpectedly, there was this other side effect of losing on the game show, which is that when I thought about not winning, I found this new kind of motivation for succeeding in my career, right? It was like, if this money isn't just gonna fall out of the sky and save my comedy career, then I'm gonna have to work really hard and I'm gonna make it happen anyway, who needs that game show money.
[00:01:27] Chris Duffy:
Look, I, I fully recognize how ridiculous my personal example is, right? It's not like in any way I deserve to win on a game show, but on today's episode, we're gonna be exploring the surprising benefits of not winning with an expert who studies exactly that. Whenever we set a goal, we always start that journey with a burst of inspiration and motivation. I'm gonna get there. I'm gonna do it.
But what happens when our enthusiasm starts to fade a little bit, and we need an additional shot of motivation? Well, today's guest, professor Monica Wadhwa, her research looks into goal setting and reward systems that can help us keep that motivation and momentum going. Even and especially when we don't win at something that we thought we really wanted. Here's a clip for Monica's TEDx talk.
[00:02:13] Monica Wadhwa (recording):
People believe that winning is the best thing that could happen to them. That winning perpetuates winning. I used to believe the same. I used to believe that winning is the best thing that could happen to me. But what if it is not? I spent the last eight years of my life researching this paradox. That not winning is in fact more powerful than winning.
[00:03:24] Monica Wadhwa:
So a lot of my interest in studying motivation was literally like a result of my childhood experiences. Growing up, I really liked playing video games. My parents refused to get the TV console games at home for me. So I used to go out and I would play Super Mario a lot. I also like the idea of playing lotteries.
I grew up in India and winning numbers used to come in a small section in a newspaper. So you would pick up the newspaper the next morning and then take your lottery ticket and match the numbers. That was really exciting for me. And I distinctly remember this one time when I almost won, I missed a lottery by one or two digits, and I was truly energized afterward.
But it kind of made me wonder, like, what is it about video games and lotteries that I really enjoy? Why, why did I feel energized afterward when playing video games and lotteries. I sometimes still do the mobile games, but then, more than more than a decade later as a researcher, I kind of wanted to study this question in a more systematic manner. So that's how I started studying motivation.
[00:04:26] Monica Wadhwa:
So had this basic hunch, right? In both the lotteries in the video games, it was this anticipation, whether I'll win something/Am I gonna cross that level? And that gave me the motivational energy to keep going, right?
I wanted to find out if this about of motivation energy I experienced while playing lottery or video game, was it all bad? Like we consider addictions bad. I mean, after all people get addicted to gambling. Or is it that we could use this motivational energy better and use it in appropriate ways?
So addiction, in some sense is a type of motivated behavior. And there's a possibility that behaviors associated with addiction could tell us more about motivation in general, right?And how we could channel this in the right direction. We tend to think of motivation as like a, a specific to reward or a goal, right?
It provides energy, and goals are like, like your steering wheel. Once your motivational energy is activated your gas pedal express. You could direct it in the right direction, work on a goal that's close to your heart, or you could just get on Instagram and spend your energy there. So going back to my answer there, when I played video games, Super Mario, I always had it in front of me to play again.
And I, until the money round out, I had it. So the motivational energy was directed in the wrong direction of playing those video games. But when I played that lottery, that one shot lottery and I was only allowed to get one that time, and I had this math example the next day. So when I almost won all of this energy was directed to the goal that was salient for me: my exam. So I put all of that energy there and started working on it. And this is what we've been testing in many different experiments.
[00:07:39] Monica Wadhwa:
There were chips and there were cookies, et cetera in that buffet, and it turns out that once the gas pedal was pressed, when that anticipation for more was activated, this more motivational energy was, was there, um, they ended up consuming more hedonic food and drink items. I actually have a little secret.
Um, I used to keep small, very little like samples of food, like chocolates. I like the dark chocolate. I like when I was working on my dissertation. So once in a while, I'll just like, kind of have that. And it would just energize me. I make sure that I'm not surrounded by too many, but once in a while, I'll have just a small piece that doesn't satisfy me, but is enough to make me want more. So this kind of led to a lot of my other work as well.
[00:08:23] Chris Duffy:
It's interesting to me that in your experiments, you end up getting to do all sorts of fun things, to mess with people in some ways, right? You give them fake lottery tickets. You create new signs in the dining hall. You have a spread of free snacks that are all secretly coordinated in, in different ways.
Oh, like he got more money for the same painter than when he had shown the paintings. And again, it was a curiosity and the anticipation, the little taste that got people excited. So yeah, I've done a lot of the crazy things.
[00:10:13] Chris Duffy:
Well, hearing, hearing those examples, but also reading, reading your papers and listening your talk. It, it almost feels like there's this spectrum where on one end, we have motivation. And on the other end we have satiation, and I wouldn't have thought of those as opposites, but it seems like the more that we get what we want, the less we're motivated.
They were watching a documentary, but that room was like full of pleasant, odor or no odor. And then we had the same buffet and this was not a food odor. This was like a normal odor. People who were exposed to the pleasant odor for 13 minutes, they ended up consuming less than who were exposed to whiff of an odor.
What he found was rats, as they come closer to a reward, they start running faster, okay? And video game developers know this really well. You normally have levels, right? For you cross a level for each level, you have to cross certain steps. They will make the last step difficult for you. Hmm. The first few steps you can easily cross.
[00:12:47] Chris Duffy:
So implications for that, for personal goal setting, I, I sometimes hear people talk about like, make a list and when you have a to-do list, put some easy things on first. So you build some momentum, right? Does that line up with what you're saying right there?