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Research on Substation energy transfer battery equalizer Technology and On-line Monitoring

(Summary description)The energy transfer battery equalizer equipment in the substation can provide a very reliable power supply for the signal, automatic device, and lighting of the substation, and it is also a good guarantee for the safe operation of the substation.

Research on Substation energy transfer battery equalizer Technology and On-line Monitoring

(Summary description)The energy transfer battery equalizer equipment in the substation can provide a very reliable power supply for the signal, automatic device, and lighting of the substation, and it is also a good guarantee for the safe operation of the substation.

Information

  The energy transfer battery equalizer equipment in the substation can provide a very reliable power supply for the signal, automatic device, and lighting of the substation, and it is also a good guarantee for the safe operation of the substation. The battery is the core of the DC system. Once the power grid fails, the battery becomes the guarantee of the power supply when the power supply fails to work. However, if the battery cannot guarantee the normal power supply to the outside at this time, the entire substation system will be completely in a power outage state. Different devices such as protection and signal can not work normally, and even serious ones can cause the entire system to become paralyzed. Although the battery is very important, but the substation accident caused by the battery problem occurs from time to time, the main reason is the problem of some battery circuits in the battery pack.
  energy transfer battery equalizer
  The main technical principle of energy transfer battery equalizer
  
  energy transfer battery equalizer technology design ideas
  
In the substation battery, because the group voltage in the charger is calculated based on the process of all the batteries in the floating state, so in this process, when there is an overcharged battery, there will be a battery undercharge. Appears, and the undercharged battery will continue to exist. To solve this problem, the main purpose is to gradually restore the overcharged battery so that it can be in a normal state.Due to the series characteristics of the battery itself, the entire set of batteries will be connected to the undercharged battery when the battery is discharged. Discharge together, combine single batteries separately to form a smaller equalization circuit. Therefore, in the equalization technology design of substation batteries, this circuit is used to discharge small currents, so that undercharged batteries start to proceed. Charge.
  
  The working principle of energy transfer battery equalizer voltage equalization technology
  
  energy transfer battery equalizer system configuration and each functional configuration
  
   The main detection equipment in the substation battery is mainly composed of real-time detection and equalization technology. Real-time detection is mainly the real-time detection of the temperature, voltage and current conditions of the battery. Of course, it can also perform online real-time detection of the current state of the charger, and then scientifically calculate whether the battery is in a discharged or charged state, and calculate The current value of the battery; the equalization circuit mainly refers to the discharge circuit at both ends of the battery and in the discharging state, and starts work based on the data of the battery real-time detection at that time.
  
   energy transfer battery equalizer voltage equalization technology works
  
For example, the battery pack in the working state of the substation system is 108 batteries that work normally in a substation. 108×2.25V=243V refers to the floating charging voltage of the battery charger. If the voltage equalization loop is in a very ideal state, then the battery pack The working voltage of multiple batteries should be 2.25V. Careful analysis is not difficult to find that such a state is impossible. The voltage and voltage between multiple different substation batteries are definitely different, and they will produce a large voltage difference, especially for those that are well maintained or newly put into operation. For battery packs, in some cases, the difference between different batteries will be very small and will be within an acceptable range, but when the battery pack is put into operation for longer and longer, the difference between different batteries will expand at this time . Through the use of voltage equalization technology, the difference between the batteries can be continuously reduced, while maintaining the difference in a small range. 

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