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El programa de cálculo DIgSILENT es una herramienta computarizada avanzada para el diseño asistido de ingeniería para el análisis de sistemas eléctricos de potencia comerciales, industriales y a gran escala.
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AprendizajeTranscripción
00:04Welcome, this video is to present an electrical power system in a way that
00:08simulation, using DesignLen, which will help us perform the calculations and simulate what
00:13It's a power network, essentially a single line, and it also allows us to edit certain parameters
00:18so that we can appreciate the different voltage and current drops of any kind
00:23of system, then the scheme that I am going to present on this occasion, is going to be a basic scheme.
00:28Which consists of high-voltage bars, and transformers with kefim, so that
00:34We can see the losses that exist in the system, and notably see the voltage drop
00:39It exists in each of them. Okay, let's create the following diagram in the program.
00:47We click on Files, New project. Here we can put my name, we'll leave it as project 1.
00:59Okay. Done. Now to give our diagram a name.
01:10So, we'll put the project itself into action.
01:14Yes, this project will be at a frequency of 60 Hz.
01:23As you can see, we have the work area.
01:29Already.
01:32Vamos in the diagram represents 1, 2, 3, 4 bars.
01:37We're going to put these bars in the program.
01:44We have a bar.
01:47Ready.
01:49We double-click.
01:50To modify.
01:52The name of the bar will be called bar A.
01:59And since it's at a line-to-line voltage, it's going to be 15.75.
02:10We give OK.
02:14Ready.
02:15We right-click, we rotate.
02:18At 180 degrees.
02:20Let's right-click again, rotate.
02:24Then close A and we already have the rotated bar.
02:29Ready.
02:31With control C, control B.
02:33To make our work easier.
02:35Control B here.
02:37Because there are 4 bars.
02:46Already.
02:49We click.
02:53To change the name of the bars, it will be our bar C, bar B.
02:59This bus will be at a line-to-line voltage of 220 kilovolts.
03:08OK.
03:11We also modified this bar here.
03:15Double-click.
03:18This is going to be our C bar.
03:21Same as 220.
03:29OK.
03:31We click again.
03:34And we have our D-bar.
03:38It will be at a line-to-line voltage of 60.
03:45And now we have the 4 bars as shown in the figure.
03:50Already.
03:55As you can see, the name of the bars is already in place.
04:02And we're going to start proceeding with the transformers.
04:09What will be used, here we are going to use a three-phase 2-winding transformer.
04:16That's the one who is found, K.
04:19Then we take bar B.
04:22From bar A to bar B.
04:24And we have our transformer.
04:28Let's double-click.
04:32And we put the name, which will be T1, the transformer.
04:38To modify the data, we need to specify the type here.
04:43New project.
04:44And another window opens for us.
04:47Here you can see that we can give it another name, but it will be from our direct transformer, it would be.
04:54Our 15.75 to 220 transformer.
05:02From the line it's following.
05:05Already.
05:08Let's look at the diagram.
05:11It says 250 megavolt amperes.
05:15So we put 250, its frequency will be 60.
05:23Already.
05:24Here you can see that it is the high line.
05:27The high line tells us it's 220.
05:32The low line tells us it's 15.75.
05:39Here it's kilovolts.
05:44The short-circuit voltage.
05:45We're going to have a short-circuit voltage of 16 per 100.
05:51We put it in both boxes.
05:55Already.
05:57To find out how our transformer will be connected here on the high line.
06:03This one's going to be a star.
06:07And the low-pressure line that will be our delta.
06:13Ready.
06:14Okay.
06:15There is no more data to modify.
06:17We continue with ok.
06:18And here, you can see that it's correct in the bars.
06:21Ready.
06:26We install the following transformer.
06:29What will become of our line between C and D?
06:35And we put the name.
06:372.
06:43Ready.
06:43At peak, we also modified the new project.
06:47This one will also be 250 megavolts.
06:53Amperes with a frequency of 60.
06:57Yes, on the high line we'll have 220.
07:08And our low-voltage line will be 60 kilovolts.
07:12We already changed the name T2.
07:17Between 220 and 60 kilovolts.
07:25Ready.
07:28The short-circuit voltage we will have is going to be 16.
07:38Ready.
07:41On the high line we have to be delta.
07:45And in the low line we have that it is star.
07:49Here we're going to set an angle of 200.
07:53Okay.
07:55Okay.
07:58Already.
08:00It has to be the same as 5 here.
08:08Okay.
08:09We already have our bars and our lines.
08:12Now we're going to use the transmission line.
08:16From bar B to bar C.
08:20Already.
08:21We double-click.
08:23And we put transmission line 1.
08:30Already.
08:31Here you can see the length.
08:33What length do we have? Is it 50 kilometers?
08:40What length do we have? Is it 50 kilometers?
08:40Ready.
08:4150 kilometers.
08:48Already.
08:49Here we have the general data of the transmission line.
08:56Then we start a new project.
08:59And we started modifying the line number.
09:02From B to C.
09:03We have the voltage.
09:13What will become of 220?
09:20With a frequency of 60 Hz.
09:22Here, the type of cable will be aerial.
09:24Three-phase alternating current.
09:26And without land.
09:28And without land.
09:29And without land.
09:34Okay, here we begin with our data.
09:38What does the scheme require?
09:46The currents.
09:47So here we're going to have 0.5.
09:52Withstanding temperatures up to 20 degrees Celsius.
09:56Here we also have what X is.
10:00Which will be 0.5.
10:06Already.
10:07We have an initial R of 0.5.
10:11And our instantaneity of 1.5.
10:17Ready.
10:18Okay.
10:21We also need to look at what susceptance is.
10:26It's going to be 80 degrees.
10:29This material will be aluminum.
10:33We're going to put it here.
10:36What will be the susceptance of 3?
10:39And 3.
10:42Ready.
10:42All the data has already been compiled.
10:44And as you can see here in this table.
10:47It already shows us the data, but...
10:49Multiplying the distance.
10:52Which is 50 kilometers.
10:55Then we have everything.
10:56Now let's get to work.
10:58This is going to be our general cargo.
11:03We click on the bar.
11:05In bar B.
11:06And there we have it.
11:08We can open it and change the name.
11:10Or we can leave it like this.
11:12In the type.
11:14In type.
11:15Here we put the global system.
11:17They already know how our loads will be.
11:22From the same bookstore.
11:24Okay.
11:27Ready.
11:28Here we can modify the load.
11:32Apparent power.
11:33AND.
11:39Here we put the apparent power.
11:42Then it will have a power of what it tells us.
11:4710 megavolts.
11:50Already the power factor.
11:52As you can see.
11:54It's 0.95.
12:00It is inductive or capacitive.
12:02In our case it is inductive.
12:04Okay.
12:06Ready.
12:06We have our cargo.
12:08Now we move on to our generator.
12:12This is going to be a generator for a synchronous machine.
12:16We click.
12:17And you can see that our synchronous machine is now running.
12:22Already.
12:28Here we can change the name.
12:33Which could be G1.
12:35Generator.
12:36In type.
12:37Here it is listed as global assistance.
12:40Because it's going to be a global one.
12:41And as our project states that it will have 210 megavolts.
12:46So we left him.
12:48We click.
12:49Ready.
12:51Everything is ready.
12:57In this case.
12:58As you can see.
13:01It's global.
13:02Because if we want to edit a generator.
13:04We need to know what parameters we have to perform.
13:07I mean.
13:08To create our curve.
13:15Of capacity.
13:18So here you can see the curve that our generator will have.
13:21Already global.
13:23Ready.
13:24Okay.
13:25Ready.
13:26So now we have our circuit done.
13:28But in order to observe.
13:30The transformer connections.
13:37So we'll give you a click.
13:41Right and we'll go to layers.
13:44In vector format.
13:46We moved to the other side so that it would be visible.
13:49And we give OK.
13:50So there you can see the connections of our transformer.
13:56Already.
13:57As you can see here, our connection in case it's faulty.
14:02So.
14:03Modify.
14:06So here it is.
14:08So, on our low line.
14:10Delta.
14:10Delta.
14:12In other words, it's going to be our delta.
14:15Then we give OK.
14:16Okay.
14:17And it gets fixed for us.
14:19So now we have our system completed.
14:23Ready.
14:28Well, we now have our electrical power system completed.
14:32We already saw the generation area.
14:36The distribution area.
14:38The bars.
14:39The transformation area, which would be the transformers.
14:42And in the end, it would be the loads that one has within the distribution area.
14:50This is already a simple system, so we can analyze what it is.
14:56All parameters of electrical disturbances.
15:04As we know, an electrical disturbance is...
15:08Any external current that affects our system.
15:12In our case it could be a download.
15:15As we have here the icon to prevent downloads.
15:18This is the icon used to analyze load flow.
15:21The following icon is for analyzing the entire circuit.
15:25First we will analyze the load or power flow.
15:29We analyze by clicking here.
15:33So here we have all the parameters that this involves.
15:37Okay, we'll leave all these rules as they are.
15:39Since this is defined by European regulations.
15:44We can accept.
15:45And we already see each of the parameters that are the loads.
15:49For example, when we analyze an electrical power system.
15:54We can find both reactive, active and apparent power.
15:59The system gives us those values at each stage of our system.
16:03That's why we can see the load being consumed here.
16:08And we can define whether there will be, or we define, our power factor.
16:15Based on the power triangle.
16:17Well, this is the only thing we can appreciate in this part.
16:21On the other hand, analyzing what downloads are.
16:24Short circuit discharges.
16:26We click on this icon.
16:30And we analyzed using ANSI standards.
16:32Well, generally here we can find different methods.
16:35To find the short-circuit currents.
16:38However, we provide an analysis of the most commonly used ones.
16:41Within the electrical field.
16:43The other terms are defined by default.
16:47Then we simply run the program.
16:50Then we can find a picture that tells us what would happen.
16:53When performing a download on each of our bars.
16:58As we can see, this is the symbol for electric discharge.
17:02Here we analyze the moment any electrical discharge occurs.
17:07In each of the sections of our electrical system.
17:11Here at the bottom we can see what it is.
17:14The effects of an electric shock.
17:19Inside each of our bars.
17:21Here we analyze bar A.
17:22In which we can see the symmetrical current.
17:27The symmetrical current would be this.
17:30Data in values such as angles.
17:40We also see equivalent impedances.
17:43Both in resistance and impedance.
17:47We also see voltage.
17:49We also have the apparent power in each of the cases.
17:52As we know at the moment there is a download.
17:55The power is also increased considerably.
17:57Just like the current.
17:58Since we have approximately 42 kilo amps.
18:02Which would be extremely high.
18:04Because it would affect every single element of our system.
18:07Whether it's generators or transformers.
18:10Or the transmission line itself.
18:12That's what we see in each of our data points.
18:16This is everything that can be analyzed in The Silent.
18:22That's all for now.
18:24Don't forget to subscribe until next time.
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