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EPD 1.1/EPD 2.1: Electric Power Distribution

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Electric Power Distribution

Product Details


Manual and Automatic Busbar Change

In practice, the distribution of electrical energy in large switching stations, is made almost exclusively using double busbar systems. These systems incorporate bus coupler bays for connecting the two busbars, incoming and outgoing feeders as well as a metering panel. Power switch modules are used in the coupler bays, the incoming and outgoing feeders, and isolating circuit breakers for each busbar. The switching processes must follow an exact sequence so that the isolating circuit breakers are switched in voltage-free condition. If the sequence is not observed, in a real situation, this would lead to the isolating circuit breakers being destroyed. The LN double busbar model simulates a 110 kV system and incorporates all functions that are relevant to practical situations. For controlling the power switch modules and isolating circuit breakers, illuminated control discrepancy switches are used, which are also found in the systems used by leading energy supply authorities. The acknowledge signal is delayed, which also corresponds to real situations. Integral test instruments for measuring current and voltages provide facilities for immediately analysing the switching operations. All switching operations can be performed either manually or automatically, using a PC. The acknowledgement of the switching operations, always follows manually.

Topics covered

EPD 1.1 Manual Busbar Change

  • Single busbar operation with one supply voltage
  • Single busbar operation with two supply voltages
  • Double busbar operation with two supply voltages
  • Busbar change, without mains supply interruption

EPD 2.1 Automatic Busbar Change, using a PC

  • Evaluating logic algorithms for various switching procedures
  • Working with switchgear interlocking
  • Correct documentation of switching procedures

Software für den automatischen Sammelschinenwechsel


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