Pilipenko Sergey

   Actuality
   Development of large thermoelectric, atomic and hydroelectric power stations with greater and greater unit ratings of generative equipment rendered negative effects on our planet ecology.
   As everybody knows, ecological conditions on Earth is under the threat, that’s why the mankind must introduce in day-to-day life the alternative pollution-free energy sources, first of all such as the wind-power engineering and solar power engineering, thus prevent the increasing of planet biosphere death risk.    One from the optimal renewable energy sources is Sun. By now we can say that solar power is serious alternative to traditional power engineering. We can substantiate it’s application urgency by next factors:

    • Availability and possibility of local using practically in any place.
    • Direct conversion of solar energy into electric energy by using the photoelectric transducers without revolving mechanical parts.

   Decreasing of power consumption is the second significant moment. We can reach it by application of power-saving technologies, especially power-saving lamps. Taking into account that 1000000 kWt*hour per year in Ukraine is spent on lighting, that is why the replacement of incandescent lamp by power-saving lamps will cause the considerable decreasing of energy consumption. That is because of the next advantages of power-saving lamps.

  1. The light efficiency of the luminescent lamp on average is five times better than the light efficiency of the incandescent lamp. Light flux of the 20 W luminescent lamp is approximate to light flux of the 100 W incandescent lamp. Thus, the power-saving lamps allow to cut down the power consumption on about 80 % without loss of habitual illuminance level.
  2. Most often the reason of the usual lamp outage is the fusion of the glower. Construction and principle of operation of the luminescent lamp are fundamentally differ from usual, that is why the term of it’s work is on average in 6-15 times longer and amount 6-12 thousands hours.
  3. In addition to the lesser energy consumption the power-saving lamps radiate less quantity of heat, than the incandescent lamps.
  4. The surface area of the power-saving lamps is larger, than the surface area of the glower. Owing to that the light is distributed across the quarters more light and uniform, that in it’s turn decrease the eyes fatiguability.

   The power-saving lamps are the impulse load because of working at high frequency. That is their big disadvantage.

   The invertor, which is connected to the photoelectric transducer, in it's turn converts the current with distortion. It causes the voltage unsymmetry and unsinusoidality.
   Taking into account the aforesaid, arises a task of electromagnetic compatibility characteristics because of EMC ensuring is the one of the main requirements to power-supply system.
   EMC is the ability of industrial gage to function with the set quality at the set electromagnetic environment and do not cause the inadmissible electromagnetic disturbances to other technical tools.
   In this connection the questions, which are connected with supplying of the power-saving lamps from the photoelectric transducer are important and well-timed in the present-day power engineering. That confirms the actuality of work.

   The aim of the work
   Definition of the EMC quantitative measures at impulse load supplying from photoelectric transducer.
   For this purpose it is necessary to solve following problems:

  • Working out the scheme of experimental investigation for the definition of the EMC quantitative measures when lamps are supplied by solar power plant ÑÀ1-250;
  • Experimental definition of the ÑÀ1-250 technical parameters;
  • Investigation of transient and stable work regimes of the power-saving lamps when they are supplied from ÑÀ1-250.

   The test subject is transients and stable regime of the scheme work.

   The subject of investigation is the dose of voltage unsymmetry.

   Analysis is provide by using the digital recorder "ÐÅÊÎÍ-08ÁÑ", taking the oscillograms of voltages, load and supply currents; further data handling on PC with the help of the software, which included in the set of the digital recorder.

   The practical value of the work
   In the given work were worked out the estimation methods of EMC of solar power plant, which supply the impulse load (the power-saving lamps). Results can be used in design of the power-supply system and in subjects “Illuminating engineering”, “Power supply”, “EMC”.