Skycontrol Datasheet- Brochure

skytron® energy GmbH / Ernst-Augustin-Str. 12 / D-12489 Berlinphone: +49 (0)30 688 31 59-0 / fax: +49 (0)30 688 31 59-99info@skytron-energy.com / www.skytron-energy.com© skytron® energy 2014 / Subject to technical change / 140206skycontrol is an integrated system for PV power plant control and grid stability management. It meets grid operators’ requirements for utili-ty-scale PV installations to ensure controlled grid injection, both at the medium and high voltage level, and can be flexibly adjusted to comply with different regional, national and international grid codes.Its distinguishing feature, the genuine closed-loop control principle, ensures high-precision control by measurement of all relevant physi-cal quantities at the grid connection point and their continuous feed-back to the controller input. Combined with adaptable control algorithms and communication sequences, this makes skycontrol a highly efficient tool for fast and stable power plant control, even in large-scale and distributed PV installations comprising several inde-pendent PV sections. Two types of skycontrol are available: Basic and Pro.KEY FEATURES> Closed-loop control of active and reactive power> Fast and precise settlement of control functions> Highly adaptable to grid operators’ requirements> Feedback of actual values from grid connection point at medium or high voltage level> Compatible with virtually all inverters on the market (see document „Compatible Inverters“ on www.skytron-energy.com> Suitable for mixed PV installations, equipped with different makes of inverters> Fully integrated in the skytron® monitoring and supervision systemKEY FUNCTIONS> Active power control (curtailment and grid stability management)> Reactive power injection> Reactive power compensation of passive components> Voltage stabilisation> Frequency stabilisationBASIC VERSUS PRO - IN BRIEFskycontrol Basic skycontrol ProClosed-loop control of active and reactive powerClosed-loop control of active and reactive powerReference and feedback for active power in four steps (100%, 60%, 30%, 0%) Reference and feedback via digital and ana-logue interfaces for active power, cosf, per-formance data etc.Characteristic curves: cosf(P), cosf(V) Characteristic curves: cosf(P), cosf(V), Q(V)DATASHEETskycontrolPower Plant ControllerKWH0,95By adding advanced performance control to PV power plants, skytron® energy's skycontrol significantly contributes to the worldwide integration of renewable power into the electricity grid while ensuring grid stability and availability.To date, worldwide, PV power plants with an accumulated power of more than 2 GWp are equipped with skytron® energy’s skycontrol power plant controller.skycontrol Proskytron® energy GmbH / Ernst-Augustin-Str. 12 / D-12489 Berlinphone: +49 (0)30 688 31 59-0 / fax: +49 (0)30 688 31 59-99info@skytron-energy.com / www.skytron-energy.com© skytron® energy 2014 / Subject to technical change / 140206 1) With applicable inverters2) If applicable: verification of implementation costs on requestSPECIFICATIONSskycontrol Basic skycontrol ProENGINEERING SERVICESSchematic representation of the system(Single-line diagram) yes yesTechnical clarification of requirements customer performs clarification consultation by skytron (e.g. verification of grid connection contract); if applicable: clarifcation directly with the grid operatorScope of services functional specifications agreement form project-specific engineering Controller parameter settings and optimisation standard parameters only yesPreliminary work for certification manufacturer‘s declaration - after signed NDA manufacturer‘s declaration - after signed NDA additional documents, such as plots of controller performanceINTERFACES AND SETPOINT REFERENCESReference inputs for active power curtailment via digital inputs four increments (100%, 60%,30%, 0%) up to 10 incrementsFurther reference data via digital inputs(e.g cosf steps, reactive power steps, I-O switching, etc.) no yesSetpoint references via anlogue signals no 4-20 mA, 0-10 VFeedback to grid operator active power feedback relay contacts, 4-20 mA, data interfacesData interfaces no Modbus, IEC 60870-5-101, -104;DNP3, IEC61850 and others on requestCONTROLLER FUNCTIONSClosed-loop control based on reference data (e.g. cosf = 1.0) yes yesClosed-loop control of reactive power according to defined characteristic curves cosf(P), cosf(V) cosf(P), cosf(V), Q(V)Power reduction in the event of overfrequency P(f) (in conformity with German (BDEW) regula-tions)yes yes; additional regulations on requestCapping of the maximum power injection (active and apparent power) yes yesPowering up and down with maximum power gradients (ramps) yes yesImmediate power-down (e.g. Q-V Protection power-down signal) no yesReactive power compensation by means of pas-sive or active equipment (e.g. switchable choke inductors, capacitor banks, reactive power, in-jection of reactive power from inverters over-night) 1no yesCustomary interfaces, new control functions (e.g. overload protection for transformer with ring injection, etc.)no yesReserve (balancing) power control withoutadditional energy storage 1no yesRemote Interface (RI): access to control func-tions, e.g. via a remotely located PC optional optionalSYSTEM PROPERTIESTime resolution for the control system 1 s 1 sCabinet 700x500x250 mm - wall cabinet 1800x600x600 mm - free-standing cabinet700x500x250 mm - wall cabinet (on request)Grid analyser to be installed at POD (measurements in 200 ms intervals) Janitza UMG 604recommemded Janitza UMG 604 measurement range: 4-20 mA Compatible inverters see document „Compatible Inverters“ on www.skytron-energy.com 2CONFORMITYStandards UL 60950-1, CSA C22.2 Nr. 60950-1, EN 60950-1, EN 61000-6skycontrolPower Plant ControllerKWH0,95