The generator has high voltage but low current. Can current be amplified through a circuit?

Introduction The generator has high voltage but low current. Can current be amplified through a circuit? If the voltage you want to use is not very high, you can add a step-down transformer to the output end of the generator.

The generator has high voltage but low current. Can current be amplified through a circuit?

If the voltage you want to use is not very high, you can add a step-down transformer to the output end of the generator to obtain a high current power supply. This is how the current power plant works. The electricity produced by the power plant is first boosted, after boosting, is to use small current and high voltage to send energy outward, the purpose is to reduce losses, but before reach low voltage electrical appliances, the voltage must be lowered. thrice. The power is constant, the voltage is high, the current supplied is low and the total power remains unchanged.

When the generator is operating at low load, the three-phase current suddenly drops about 100A from time to time, then recovers immediately. What is the reason ?

Once the generator is connected to the network and closed at the same time, the active power and the pureactive power are basically zero. At this time, the induced potential of the generator stator is equal to the terminal voltage. If the active power is increased first, this can cause an induced potential lower than the terminal voltage, causing reactive power to flow back, which is detrimental to the stable operation of the generator. Therefore, after connecting to the grid, a small excitation is usually added to make the power output state reactive. The reactive power band can be determined by referring to the terminal voltage. As active power increases, reactive power decreases. This is a normal phenomenon (except for automatic excitation). Therefore, the reactive power should be adjusted according to the active power, and the power factor is generally kept between 0.8 and 0.9.

This is due to fluctuating power grid load and is nowbut normal.

Reason: The condition for the generator to send power to the grid is that the voltage is slightly higher than the grid voltage, otherwise no power will be sent or used.

Analysis: When the 10MW generator operates at low load (3~4MW), the excitation system operates in a low excitation state, the magnetic circuit is not very saturated and the transient component of the reaction induces reactance is too large, causing excitation. The system response speed decreases. When the grid voltage is higher than the generator voltage, the amount of energy supplied decreases, i.e. the generator current decreases. The excitation system cannot respond, resulting in strong excitation and a sudden drop in reactive power. The above parameters automatically recover after fluctuation, indicating that the generator excitation system is responding, proevoking an increase in the voltage at the generator terminals, a recovery of current and a recovery of reactive power.

During the whole process, the door opening does not change and the main steam parameters do not change, because the current drop of 70 A is very small for the adjustment accuracy of the steam generator. 10 MW, therefore of the system. will not change working conditions.

I stopped the machine once and checked the excitation system. No problems were noted. It can be seen that this generator phenomenon is a problem of insufficient response speed, but for generators that do not work. nominal values, this discrepancy is understandable. Under full load conditions, the transient component of the generator armature response will return to normal and the system response speed will also return to normal.

Conclusion: This phenomenon is normal.

Fujian CountyZherong Huayuan Power Equipment Co., Ltd.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. How to reduce it to 4.8V/4.4A?

    Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. I personally think it is impossible to reduce it to 4.8V/4.4A. Because the discharge platform of lithium batteries is generally set
    08-10
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01