IEC-62271-202-Standards_EN.pptx

Biosco: MV/LV prefabricated substations IEC 62271-202 Presentation of the standard Biosco: MV/LV prefabricated substations IEC 62271-202 Presentation of the standard Safety is a choice â¹#âº â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Contents Introduction Type-tested substations The type tests A specification tool Conclusion â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Contents Introduction Type-tested substations The type tests A specification tool Conclusion â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > Introduction Standard IEC 62271-202: an international influence Biosco conforms to IEC 62271-202 international standard IEC 62271-202 standard applies to most of prefabricated substations world-wide. UL IEC IEC IEC IEC IEC â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > Introduction Introduction IEC 62271-202 standard specifies the rated characteristics, the design and construction rules and the test methods applicable to prefabricated substations. A prefabricated substation is defined as a type-tested assembly comprising an enclosure that includes: Transformer LV switchboard MV switchboard MV and LV interconnections Auxiliary equipment â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > Introduction Introduction These substations are located in places accessible to the general public. Consequently, safety of persons must be guaranteed Conformity to the IEC standard guarantees: Protection of the general public Protection of operators â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Contents Introduction Type-tested substations The type tests A specification tool Conclusion â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > Type-tested substations Type-tested equipment All substation components must conform to IEC standards and in particular: Transformers: IEC 60076-1 or 60076-11 MV switchboard: IEC 62271-200 or 62271-201 LV switchboard: IEC 60439-1 and IEC 60947-1 â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > Type-tested substations > Type-tested substations The prefabricated substation undergoes type tests MV LV Use of equipment conform to IEC standards Oil retention Earthing circuit test Mechanical resistance of the enclosure Temperature class Sound level Degree of protection Insulation level Internal arcing withstand Non flammable materials Electromagnetic compatibility Functional tests â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > Type-tested substations The 4 designs of the Biosco range conform to IEC 62271-202 standard Biosco W: Substation with corridor Operation protected from bad weather conditions Biosco N: Substation with external operation Ground space savings Biosco H: Half-buried substation Visual impact limited Biosco U: Underground substation Blends completely into the environment Biosco U Biosco N Biosco H Biosco W â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Contents Introduction Type-tested substations The type tests A specification tool Conclusion â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests The type tests 1. Dielectric tests 2. Temperature rise tests 3. Main circuit and earthing tests 4. Functional tests 5. Degree of protection verification tests 6. Mechanical tests 7. Arcing due to an internal fault tests 8. Sound verification tests 9. Electromagnetic compatibility tests â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Dielectric tests Aim of test To guarantee insulation of HV and LV interconnections Our performance The HV and LV interconnections of the Biosco range are tested as per standards IEC 60694 and 60439 Example for 24 kV switchgear: Withstand to voltage of 50 kV at power frequency for 1 min Withstand to lightning impact voltage tests for a 1.2 Âµs wave and a voltage of 125 kV â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Temperature rise tests Aim of test To determine the enclosure class To guarantee that none of the substation components will overshoot its standard-defined limits To guarantee temperature on the parts of the enclosure likely to be touched during operation To guarantee lifetime of insulating devices and thus safety of equipment during the period of operation Our performance The Biosco substation enclosures are class 10 as standard This performance can be adapted to your needs according to ambient temperatures, degrees of protection or transformer losses Numerical modelling and thermal simulations are performed. â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 The substation is characterised by the enclosure class This is the difference between temperature rise of the transformer in the enclosure and temperature rise of this same transformer outside the enclosure in normal conditions. The different standardised classes are: Class 5 ; class 10: class 15 ; class 20: class 25 ; class 30 > The type tests Main circuit and earthing tests Aim of test: To guarantee the capacity to withstand short-circuit currents Our performance The Biosco substations are tested up to 12 kA â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Functional tests Aim of tests To guarantee that it is possible to carry out all the operations required for commissioning, operation and maintenance Our performance The Biosco substations undergo a series of verifications Switchgear operation Mechanical operation of substation doors Reading transformer temperatures and oil levels Monitoring voltage readings Installation of earthing devices Cable tests Replacement of fuses and monitoring of locking systems Operating the transformer on-load tap changer Cleaning the ventilation grids Monitoring the locking systems â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Degree of protection verification test Aim of test To ensure the protection of people against access to hazardous parts To guarantee the protection of equipment against ingress of foreign solid objects and water. Our performance The degree of protection of the Biosco substations is between IP23 and IP54 This performance can be adapted to your needs: stipulations of standards and climatic requirements. â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Mechanical tests Aim of test To guarantee withstand of roof in event of overload: people, snow, etc. To guarantee the resistance of substation to wind pressure and to mechanical impacts on walls, covers, doors, ventilation opening. Our performance Roof withstand greater than 250 daN/mÂ² IK10 (including doors and ventilation grids) â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Arc due to an internal fault test Aim of test To guarantee the protection of operators and the general public. The standard defines a classification: Class A: operator protection Class B: general public protection Class AB: operator and general public protection Our performance Koolarc system (cools and reduces pressure of arc gases) Classification for all substation types Example Biosco N India IAC-AB-20kA-1s Pressure and temperature simulation â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Film1: failed test (red camera); film 2: successful test ( blue camera); > The type tests Sound verification test Aim of test To ensure that the substation enclosure does not increase the transformer noise level. Our performance The Biosco substations conform to the requirements of the IEC standard â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > The type tests Electromagnetic compatibility test Aim of test To satisfy emission requirements laid down by international standards To guarantee the proper operation of equipment in an environment comprising large electromagnetic disturbance sources Our performance HV and LV switchgear comply with the specifications of standards IEC 60694 and 60439-1. Electromagnetic fields are simulated. â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Contents Introduction Type-tested substations The type tests A specification tool Conclusion â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > A specification tool A specification tool Standard IEC 62271-202 tells users which information should be supplied for invitations to tender and orders. Network specificities Nominal and highest voltages Frequencies Neutral earthing mode Operating conditions Minimum and maximum temperatures Altitudesâ¦ The specificities and electrical characteristics of prefabricated substations Voltage, power, frequencyâ¦ â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 > A specification tool A specification tool The information required for specifications is summarised in table form. All the electrical utility has to do is complete this information. â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Contents Introduction Type-tested substations The type tests A specification tool Conclusion â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Conclusion Type-tested MV, LV equipment and transformer A series of type tests to guarantee safety and reliability of the prefabricated substation throughout its life cycle. An MV/LV substation specification guide providing all characteristics and installation and operation conditions MV LV Use of equipment conform to IEC standards Oil retention Internal arcing withstand Earthing circuit test Mechanical resistance of the enclosure Temperature class Sound level Insulation level Non flammable materials Electromagnetic compatibility Functional tests â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007 Thank you for your attention â¹#âº Biosco - PrÃ©sentation clientÃ¨le - 08/2007

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