How does power generation from a power plant get to the grid, I would like to ask about technical pr

The ocean is the largest, all the rivers flow to the ocean, and the ocean is not visible**; The ocean is the largest, and most of the rain in the sky comes from the ocean (the steam of the ocean).

The grid is the ocean, all power plants generate electricity to the grid, and all users take electricity from the grid.

Rivers flow to the ocean because the water level of the rivers is higher than the ocean; The current of the power plant is directed to the grid because of the potential difference of the power plant.

Above the grid. The user can draw electricity from the grid because the potential difference of the user is lower than the grid.

When the generator is connected to the grid.

1.The frequency of the generator is the same as the frequency of the system.

2.The generator outlet voltage is the same as the system voltage.

3.The generator phase sequence is the same as the system phase sequence.

4.The generator voltage phase is the same as the system voltage phase.

Just connected to the grid, the generator and the grid are consistent, there is no current to the grid, if the prime mover is increased (watergate.

Fengmen, throttle, valve, etc.) to increase the potential difference, and the current will flow to the power grid; If the potential difference is reduced by reducing the prime mover (water gate, phoenix gate, accelerator throttle, valve, etc.), the grid current flows to the generator, and the generator becomes an electric motor.

Physically, the stator and rotor of the generator.

In addition to being a driving force, they are two parts that are completely independent and do not interfere with each other;

The stator of the generator is the active energy source, which generates an induced electromotive force.

The electric current, dragged by the prime mover, outputs alternating current outward.

The active power is driven by the prime mover (oil volume, gas volume, air volume, water volume, etc.).

Determines the magnitude of the active power.

The rotor of the generator is reactive, and the windings bring in direct current from the outside.

The magnetic field is established, and under the drag of the prime mover, the reactive power of the alternating current is transmitted outward, which is determined by the direct current of the input rotor.

The magnitude of the work power.

From the electromagnetic principle, the rotor and the stator are closely linked, the active and reactive power of the generator are output by the stator, the torque of the rotor determines the size of the active power, and the rotor coil is straight.

The current determines the reactive power.

size. The generator and motor are fully reversible, with the rated voltage added to the stator windings of the generator and motor.

The rotor will rotate; Use an external force to rotate the rotor of a generator or motor.

When the rated synchronous speed is reached, the stator will generate a voltage and send out electricity.

It's just that because the design is focused, using a generator instead of a motor or a motor instead of a generator, and the efficiency is below 70% of the rated rate, so it will not be replaced, and only small capacity will be selected. In lieu of.

Theoretically, the power plant will generate as much electricity as the user uses, but the load is always changing, and the power grid and the power plant cannot follow perfectly, especially now that the power grid is so complex, there will definitely be overload, or the moment of oversupply. The overload, as I can imagine, must have pulled the grid voltage down, didn't it? In severe cases, the power grid will collapse.

But if the supply is too large, what will be the impact on the operation of the power plant? Will there be an accident? I can help you explain that question.

The load is not absolutely stable, sometimes large and sometimes small, but the consumption of electricity and power generation are absolutely synchronized, and only how much electricity is generated. Take one of the electrical devices in the house, one heats up quickly. When it is suddenly energized, the power of the grid does not change, but the load changes, and then we think that the load has increased but the power has not changed.

This is not very understandable. But the load doesn't actually increase, because all of our electrical equipment doesn't have to operate at rated power. At this time, the heat will quickly distribute the electricity to other electrical devices on the grid.

But the whole power grid is huge, and the actual power of other equipment only needs to be reduced a little bit. It does not affect the normal operation of all equipment. I don't think my statement makes sense, do you understand?

You can compare the power grid to a big rope of tug-of-war, one end of the rope is a lot of power plants, the other end is a lot of users, the load of these two ends is always equal, that is, this tug-of-war is always horizontal, that is, how much electricity is generated and how much electricity is used by users, there is no waste and shortage. And how much the load of each power plant on the network is directly controlled and distributed by the ** dispatcher. It's not up to the individual power plants to say it themselves.

There are many kinds of grid voltages, there are 220kv, 500kv, etc., take 220kv of North China Power Grid as an example, the electricity sent by the generator of our factory, the transformer is generated to 220kv, and the frequency, voltage, phase, and phase sequence are the same (that is, the waveform is completely overlapped) before it is closed and connected to the grid. If a power plant suddenly fails and trips off the brake during operation, that is, the load is small, it is like a horse pulling a car that is tired, and the car is relatively heavy. At this time, the center will increase the load on other normal power plants to make up for the defects of the faulty power plant, otherwise the frequency and voltage on the power grid will not meet the requirements.

The load of the power plant varies with the amount of electricity used, and it is always in balance. There is no such phenomenon when the generator you said becomes an electric motor, because the voltage on the power grid after the power plant is boosted, there is no potential difference, and there is no current flowing from the power grid to the power plant, and only the power grid can flow to the user's electrical appliances. Only when the generator fails and stops, and the plant converts power to backup power, the generator will be used as a motor, and this phenomenon should be strictly avoided.

Same as "Yao Qilun, a wanderer in Guizhou".

Just help you.,Hey.,Why can't today's children do their homework?。。。 Sweat... 1) How does a power plant generate electricity?

Answer: There are generators in the power plant, and the electricity is generated by the generator, and the generators are generally synchronous generators, with steam turbines (corresponding to thermal power plants), water turbines (corresponding to hydropower plants), reactors (corresponding to nuclear power plants), and of course, other power generation equipment, such as wind power plants, solar power plants. In short, it is the conversion of other forms of energy into electricity.

The principle used here is generally Faraday's law of electromagnetic induction. 2) How does the power plant deliver electricity? A:

To be precise, power transmission is the transmission of electromagnetic waves, also called the transmission of electromagnetic energy, China's electricity frequency is 50Hz, which is a low-frequency wave, and needs to rely on medium propagation, that is, transmission lines. The electric energy produced from the power plant is generally raised through the step-up transformer (high-voltage transmission is conducive to reducing the loss of the transmission line), and then sent to the near-load side through the overhead transmission line, and then through the step-down transformer, the voltage is lowered to the rated voltage of the user's equipment (for example, we generally use a voltage of 220V) for the user's use.

Summary. The electricity generated by power plants usually reaches users through step-up substations, high-voltage overhead transmission lines, step-down substations, and transmission lines. From a professional point of view, the production, transmission, distribution and use of electric energy constitute the power system, including four links: power generation, transmission and transformation, distribution and consumption.

Specifically, the electric energy (power generation link) sent by the power plant is sent to the transmission line after the voltage is raised by the transformer of the step-up substation, and the transmission line transmits the electric energy to the distant power consumption area (power transmission and transformation link), and the transformer of the substation in the power consumption area reduces the voltage and sends it to the distribution line (distribution link), and finally the electric energy is sent to the city, suburbs, towns and rural areas through the distribution line, and further distributed and industrial, agricultural, commercial, residential and special needs of the electricity sector (electricity link).

How does the electricity from power plants be delivered to various industries?

How does the electricity from power plants be delivered to various industries?

The electricity generated by power plants usually reaches users through step-up substations, high-voltage overhead transmission lines, step-down substations, and transmission lines. From a professional point of view, the production, transmission, distribution and use of electric energy constitute the power system, including four links: power generation, transmission and transformation, distribution and consumption. Specifically, the electric energy (power generation link) sent by the power plant is sent to the transmission line after the voltage is raised by the transformer of the step-up substation, and the transmission line transmits the electric energy to the distant power consumption area (power transmission and transformation link), and the transformer of the substation in the power consumption area reduces the voltage and sends it to the distribution line (distribution link), and finally the electric energy is sent to the city, suburbs, towns and rural areas through the distribution line, and further distributed and industrial, agricultural, commercial, residential and special needs of the electricity sector (electricity link).

Step-up substations, high-voltage overhead transmission lines, step-down substations, and transmission lines reach users.

There has been a great deal of debate in history about whether to use DC or AC transmission for the transmission of electric energy. The American inventor Thomas Edison and the British physicist Kelvin both strongly advocated the use of direct current transmission, while the American inventor Westinghouse and the British physicist Ferranti advocated the use of alternating current transmission.

In the early days, engineers focused on direct current, and power stations had a limited range of power supply and were mainly used for lighting rather than industrial power. For example, in 1882 the Edison Electric Lighting Company (founded in 1878) built the first power station in London and installed three 110-volt "Juhan" DC generators, which Edison developed in 1880 to power 1,500 16-watt incandescent lamps.