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System Manual

1 About This Manual

3

1.6

How to Use this Manual

Read this manual and other related documents before transporting and installing the MV
Station. Documents must be stored at hand and available at all times.

Additional documents are also available to the users:



Manual of the Transformer

All rights reserved including the pictures, markings and symbols used. Any reproduction or
disclosure, even partially, of the contents of this manual is strictly forbidden without prior
written authorization of Sungrow.

The contents of the manual will be periodically updated or revised due to the product
development. It is probably that there are changes of manual in the subsequent MV Station
edition. The latest manual can be acquired via visiting the

website at

www.sungrowpower.com

Please read over this manual and other related manuals before installation and
operation of the devices inside the MV Station.

1.7

Terminology

Name

For short

MV Turnkey Station

MV Station

Intelligent power distribution cabinet

Intelligent PMD or PMD

The foregoing devices are expressed in the abbreviation form in this document unless
otherwise specified.

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Содержание SG2500U-MV

Страница 1: ...SG2500U MV V11 SEN Ver10 201805 SG2500U MV MV Turnkey Station System Manual...

Страница 2: ......

Страница 3: ...Live Line Measurement 6 2 2 6 Measuring Instrument 6 2 2 7 Volt free Operations 6 2 2 8 ESD Protection 7 2 2 9 LCD Parameter Setting 7 2 2 10 Sand and Moisture Protection 7 2 2 11 Symbols on the Devic...

Страница 4: ...20 5 2 Hoisting the MV Station 21 5 2 1 Safety Precautions 21 5 2 2 Hoisting 22 5 2 3 Fastening of Connectors 23 5 3 Foundation 23 5 3 1 Selection of Installation Site 23 5 3 2 Foundation Requirement...

Страница 5: ...2 Equipotential Connection of MV Station Internal Devices 37 6 9 3 External grounding 38 6 10 Communication Connection 39 6 11 External Power Supply Connection 40 6 12 Finishing Electrical Connection...

Страница 6: ...7 Running Information Checking 53 9 8 History Information Checking 54 9 8 1 History Event Checking 54 9 8 2 History Data Checking 55 9 8 3 History Fault Checking 55 9 8 4 History Alarm Checking 56 9...

Страница 7: ...landing protection 73 10 12 5 Reverse polarity protection 74 10 12 6 Overload protection 74 10 12 7 Ground protection 74 10 12 8 Module over temperature protection 74 10 12 9 Internal over temperature...

Страница 8: ...mponents 89 12 3 On site painting make up measures 89 12 4 Replacement of the electrical components 93 13 Appendix 94 13 1 MV Station System Parameter 94 13 1 1 Input data DC side 94 13 1 2 Output dat...

Страница 9: ...time Start Stop Steps to start and stop the MV Station internal devices during normal maintenance or troubleshooting Operation of LCD Display Function and use of the MV Station HMI Functions Descript...

Страница 10: ...death or serious injury WARNING indicates a hazard with a medium level of risk which if not avoided could result in death or serious injury CAUTION indicates a hazard with a low level of risk which i...

Страница 11: ...ithout prior written authorization of Sungrow The contents of the manual will be periodically updated or revised due to the product development It is probably that there are changes of manual in the s...

Страница 12: ...ected power generation The PV power generation system with MV Station is shown in the following figure A B C D Fig 2 1 Application of MV Station to the PV Power System No Name A PV Array B PV Array Co...

Страница 13: ...ons and standards 2 2 2 Manual Storage Product manuals are indispensable parts of the product Very important information about the transport installation maintenance and troubleshooting of the MV Stat...

Страница 14: ...6 Measuring Instrument Instrument for measurement of the electrical parameters should meet the requirements listed below Instrument for measurement of the electrical parameters should be high quality...

Страница 15: ...is above 95 2 2 11 Symbols on the Device Body Symbols on the device body contain important information on the safe operation of the MV Station and its internal devices Do not tear or damage them Do no...

Страница 16: ...nternal devices is end of life it cannot be disposed of together with household wastes Some components inside can be recycling and some components can cause environmental pollution Please contact the...

Страница 17: ...AC and DC sides of the two modules by using proper temporary grounding devices 2 3 2 Safe Operation of the Transformer Room Perform the operations in this section before any operation on the transfor...

Страница 18: ...he MV Station converts DC current generated from the PV array into grid compatible AC current which can be directly fed into the medium voltage grid 3 2 MV Station Internal Construction The MV Station...

Страница 19: ...System Manual 3 Product Description 11 3 3 Overall Design of the MV Station 3 3 1 MV Station Views View Description A Front view A is the LCD protective box Back view Left view Right view...

Страница 20: ...d connected run mode Yellow The MV Station is in alarm run mode FAULT Red A fault occurs and has not been removed The LED will be off when the fault is cleared Buttons The functions of each button are...

Страница 21: ...ut the flashings are shown in the figure below Depth Width Height Fig 3 2 Appearance and dimensions of the MV Station Width Height Depth 6058mm 2896mm 2438mm The Clearance Spaces The clearance spaces...

Страница 22: ...Components The figure below shows the top view of the major electrical components inside the MV Station DCC 2 1 C B A Item Device Description A DC cabinet DC cables connect to the corresponding area o...

Страница 23: ...ands should be sealed by fireproof mud or other appropriate materials The MV Station bottom cable entries are shown below Hole 1 Hole 2 Hole 3 Hole 4 Fig 3 3 Cable entries of the MV Station Function o...

Страница 24: ...Description A DC input copper bar B DC input copper bar Intelligent PMD The ports between the MV Station and external devices are designed on this cabinet The locations of the ports are shown in the...

Страница 25: ...GE SPRING The DC Switch can be used together with a micro motor When there is the power supply on the MV Station AC side the energy can be stored to the breaker through this motor when there is no pow...

Страница 26: ...will provide you with the fast and best service Examine the contents of the shipment to check if there is anything missing according to the scope of delivery Check to make sure the MV Station and inne...

Страница 27: ...y The ground should be flat without water bumps or plantings Lock the MV Station internal devices and the MV Station during storage Take proper protection method to prevent the water and dust penetrat...

Страница 28: ...elevant training experience especially those safety related ones Keep in mind the dimensions and total weight of the MV Station at all times Ensure that the following requirements are met All the door...

Страница 29: ...ctor is needed in the whole hoisting process All the slings used must have the load bearing capacity of at least 30t The crane should have sufficient arm length and radius of gyration All the connecti...

Страница 30: ...from the ground stop to check if all the connections are still firm After confirmation continue hoisting the MV Station When transported to the final location the MV Station should be put down slowly...

Страница 31: ...nt and geological conditions like stress wave emissions the level of underground water table and etc should be taken into account The ambient environment should be dry well ventilated and far away fro...

Страница 32: ...east 200 mm longer than the width of MV Station on each side Sufficient cross sectional area and depth of the foundation should be maintained The depth is designed according to local soil conditions C...

Страница 33: ...cal Installation 25 2179mm 1700mm 2179mm P P P P Refer to the above distances to construct the foundation C 400 B A H S W C C Item Name Note A Foundation B Pea gravel ground C Pre embedded 20 channel...

Страница 34: ...pole must be in accordance with the installation codes The maintenance entry is designed for the foundation if needed the working personnel can enter into the foundation for required operation It is...

Страница 35: ...during transportation Locations of the flashings and cover plates are shown by A and B respectively in the figure below Remove the flashings and cover plates before commissioning B B B B B B B B A A A...

Страница 36: ...ult before operation and take proper protective measures Observe all the country specific standards and regulations Connect the MV Station to public grid only after receiving authorization from the lo...

Страница 37: ...nstructions Ensure the electrical insulation is satisfied before laying the cables Follow the EMC regulation and lay the power cable and communication cable in different layers Provide support and pro...

Страница 38: ...ts may affect the insulation and may cause short circuit Remove the heat shrinkable tubing between the cable lug and the copper bar if necessary Poor contact or over heating may follow if otherwise Cl...

Страница 39: ...ighten the cable with proper torque shown below to prevent the poor contact high contact resistance or fire caused by the looseness of cable lugs Screw size Torque N m Torque lbf inch M3 0 7 1 6 195 8...

Страница 40: ...bles are connected to the MV Station through the bottom cable entries The protective grid is located on the lower part of the MV Station cabinet Step 1Open the door and find the protective grid Step 2...

Страница 41: ...onnection 6 5 1 Circuit Diagram B 3 3 A C K MV Station 2 1 E D Devices in the above figure are Item Name A DC input B AC output C External power supply port D External communication port E DC cabinet...

Страница 42: ...for the specific cable connections of transformer 6 7 DC Connection 6 7 1 Checking before Connection Check the following items before cable connections Check the open circuit voltage of the PV array...

Страница 43: ...es are shown in following table Bolt Torque N m Torque lbf inch M12 40 60 70 531 619 5 Connection Proceed as follows to connect the DC cables Step 1Make sure the switch upstream of the combiner box is...

Страница 44: ...wing the sequence in 6 2 Parts for Cabling 3 Fasten the bolts with screwdriver or spanner Incorrect connection sequence may cause fire Please pay maximum attention to the connection sequence Ensure th...

Страница 45: ...vice internal instructions when closing opening the AC switches 6 8 2 AC Cable Connection Please strictly observe transformer manuals to connect AC side cables to the downstream device 6 9 Ground Conn...

Страница 46: ...d terminals and the ground copper bar to ensure the effectiveness of the internal ground connection Ground the shielding layers and protection layers of the cables connected to the MV Station outside...

Страница 47: ...s of welding After welding take anti corrosion measures for the welding point The grounding resistance should be no more than 4 It is recommended that two points of the MV Station should be connected...

Страница 48: ...xternal power supply micro breaker D Grounding copper bar for N wire The wiring diagram of external power supply The wiring diagram of external power supply is shown in the figure below Perform cable...

Страница 49: ...les Make sure all connections are correct and firm After checking that all connections are correct and firm Tighten all the cable entries The gap at the cable inlet outlet at the bottom of the MV Stat...

Страница 50: ...mable materials at least 5 meters around the installation site Local national standards about the min electric clearance around the MV Station should be respected Make sure the installation is correct...

Страница 51: ...to the equipotential connection point and properly grounded The ground resistance should be no more than 4 7 3 2 Checking the module Ensure that the DC and AC switches are in the OFF position Check an...

Страница 52: ...nel if the grid voltage deviation is serious Measure and record the grid frequency Measured data should not exceed the grid permissible frequency Measure the THD and check the curve if possible The MV...

Страница 53: ...Operation in this manual You can also view the running information and perform pertinent operation 7 7 Completing Commissioning If all the start up procedures have been performed check the operating...

Страница 54: ...eeds no manual control in daily operation Open the cabinet door only for maintenance or troubleshooting and by qualified personnel only Keep the door closed and locked and store the keys of the door b...

Страница 55: ...ed conditions are fulfilled proceed as follows to start the MV Station Step 1Close the upstream and downstream switches of the MV Station Step 2Turn the AUX SUPPLY knob switch to the ON position Step...

Страница 56: ...e MV Station downstream switches Step 4Disconnect the MV Station upstream switches Step 5MV Station stops During normal operation disconnection of AC or DC switch is strictly forbidden Otherwise the s...

Страница 57: ...ed and then enters into the starting menu The initialization screen appears every time the MV Station is energized After initialization the default screen follows 9 2 2 Default Screen Introduction A B...

Страница 58: ...Overview of LCD Menu and Icon 9 3 1 Overview of Submenu and Icon There are three buttons on the lower left side of the touch panel for user to operate Start Stop Home Function The logical structures...

Страница 59: ...on marks For example the menu will be referred to as Set parameter 9 4 Entering Password MV Station parameters are protected by password User can enter into the Set parameter sub menu only after enter...

Страница 60: ...anguage by either of the following two ways 9 5 1 Conventional Way Step 1Tap Function from the default menu Step 2Tap Set parameter Step 3Tap Sys parameter after entering the correct password Step 4Ta...

Страница 61: ...time running information of the modules can be checked The output power DC voltage current power factor reactive power efficiency daily monthly annual power yields internal temperature positive negati...

Страница 62: ...d enter into the power curve sub menu Step 4Tap E histogram and enter into the electricity histogram sub menu The display value is directive only and must not be used as a basis for invoicing 9 8 Hist...

Страница 63: ...ap Function from the default menu Step 2Tap History information and enter into the history information sub menu Step 3Tap His data and enter into the history data sub menu Tap Prev or Next to turn pag...

Страница 64: ...al numbers of the current warn records Tap Prev or Next to turn pages up or down 9 9 Present Fault Information Checking There may be one or more than one fault occurs inside the MV Station at the same...

Страница 65: ...pping the corresponding buttons The instruction is effective after confirmation cancel the operation by tapping Cancel 9 11 Load Default Proceed as follows to perform the load default Step 1Tap Functi...

Страница 66: ...There are the RS485 communication and Network communication User can set the communication address and protocol through the LCD screen when the hardware connection is complete and the device is energ...

Страница 67: ...etwork Parameter to enter the following interface Six parameters pertinent to the Network communication can be set DNS address 1 and DNS address 2 can be set to the default value Other parameters are...

Страница 68: ...creen is powered off SVG switch If the reactive power compensation is activated or deactivated T recover s Automatic recovery time when fault occurs P rise rate s Percentage that the active power rise...

Страница 69: ...ver s 20 600 60 P rise rate s 0 05 100 10 P decline rate s 0 05 100 10 Q rise rate s 0 05 100 10 Q decline rate s 0 05 100 10 Trip Enable Disable Enable Disable Fgrid derating control switch Disable E...

Страница 70: ...in Set the grid under voltage protection value Protection is activated when voltage is below this value _Vgrid min Set the grid under voltage protection value Protection is activated when voltage is b...

Страница 71: ...LVRT switch Enable or disable the LVRT switch LVRT T1 ms Refer to Fig 10 2Low High voltage withstand requirements T1 LVRT T2 ms Refer to Fig 10 2Low High voltage withstand requirements T2 LVRT voltage...

Страница 72: ...id max 105 150 115 _Vgrid max 105 150 117 5 _Vgrid max 105 150 120 _Vgrid max 105 150 120 Recover_Vgrid max 105 150 105 _T Vhigh trip ms 40 600000 1100 _T Vhigh trip ms 40 600000 600 _T Vhigh trip ms...

Страница 73: ...T2 ms 100 5000 500 HVRT voltage1 110 120 110 LVRT voltage2 120 140 130 Recover T grid s 1 600 10 Temperature settings 5 10 0 Humidity settings RH 70 100 80 Active Islanding Enable Disable Disable I le...

Страница 74: ...Run Alarm removed Fig 10 1 Operation modes change Upv is the DC input voltage of the MV Station UpvStart is the MV Station DC side startup voltage 10 1 2 Operation Mode Description Stop This is the in...

Страница 75: ...gram from the LCD panel and then start the MV Station If the fault is unrecoverable MV Station must be stopped to perform maintenance work MV Station will automatically check if the fault is recoverab...

Страница 76: ...the Remote Local control sub menu Step 5Select the control method through the pull down list 10 3 Active Power Limitation 10 3 1 Introduction to Active Power Limitation Situations call for power limit...

Страница 77: ...wer limitation is performed through the running information sub menu as follows Step 1Tap Function from the default menu Step 2Tap Set parameter Step 3Tap Run parameter after entering the correct pass...

Страница 78: ...defined in the requirements documents during the ride through event in each of the voltage ranges specified in the SRD s and returns to at least 80 of the pre disturbance current level within the tim...

Страница 79: ...value 60 1 2 L1 2 Pn L2 10 Pn 30 P Pn Fig 10 3 MV Station temperature derating function Ambient temp T Operation situation T 30 The MV Station starts with the aid of auxiliary heater 30 T 45 Operate f...

Страница 80: ...eanwhile the fault current against the ground and the short circuit caused by low insulation resistance may lead to electric fire device damage or even physical hazards Sungrow s MV Station is equippe...

Страница 81: ...he PV array exceeds the max DC voltage MV Station will stop operating send warning signal and display the fault type on the LCD screen MV Station can detect the abnormal voltage and respond quickly 10...

Страница 82: ...perating unless the condition resumes normal 10 12 7 Ground protection The grounding cables are equipped with the leakage current sensor When the leakage current is detected to exceed the setting valu...

Страница 83: ...System Manual 10 MV Station Functions 75 devices and maintainers and operators The warning signal can connect to the fire alarm system of the PV system directly...

Страница 84: ...om the marking of the MV Station or the component itself If otherwise please contact Sungrow If the field work needs to replace the components with products from other manufacturer or with different m...

Страница 85: ...ation of the PV array and reduce the open circuit voltage of the PV array Remark Please contact the installers of the PV arrays Fault Vac high Possible reason The grid voltage is above the max grid vo...

Страница 86: ...Measure Remark The MV Station automatically reconnects to the grid once the leakage current recovers Fault Iac high Possible reason Internal short circuit or internal components damages Measure Check...

Страница 87: ...ion when the leakage current to the ground returns normal Fault Overload pro Possible reason Capacity of the DC side panel is overload Measure It is advisable to stop the device and disconnect half of...

Страница 88: ...lt Grid V unbalanced Possible reason AC side 3 phase voltage unbalance Measure Stop the device to check the AC side voltage Remark Fault Encoding repeat Possible reason Different 1 25MW modules have t...

Страница 89: ...e is loose or broken Remark Contact Sungrow Fault DC switch fault Possible reason DC cabinet switch fault Measure Stop the device to check and service the DC cabinet switch Remark Contact Sungrow Faul...

Страница 90: ...Stop the device to check and service the DC switch Remark Contact Sungrow Alarm IDM com flt Possible reason The MV Station internal communication abnormal Measure Check the IDM when the MV Station is...

Страница 91: ...LCD display and the DSP LCD power supply malfunction Measure Check the connection between the LCD display and the DSP when the MV Station is voltage free Remark Fault Communication Failure with PC Pos...

Страница 92: ...inet door Make sure the device internal is completely voltage free before any work on the MV Station Only qualified personnel can perform the work described in this chapter Do not leave any screws was...

Страница 93: ...tion and internal electric devices periodically to ensure the good performance of the MV Station The maintenance interval described in this chapter is indicative only The actual interval depends on th...

Страница 94: ...emperature and dust of the heat sink Use vacuum cleaner to clean the MV Station if necessary Replace the air filter if necessary Notice Check the air inlet and outlet The device may be damaged by over...

Страница 95: ...on From every six months to annually Firefighting device Check the functionality of the firefighting devices Follow related regulation where the project is located Other devices Replace the damaged li...

Страница 96: ...row Depending on the filter type and model user can cut out small cotton from the larger ones 12 2 4 Cleaning MV Station Air Inlet Window It is recommended to check and clean the MV Station air inlet...

Страница 97: ...rical components The electrical components inside the MV Station must be replaced by the same components from the same manufacturer and with the same model number The model number can be acquired from...

Страница 98: ...veness detergents Step Figure Description 1 Clean the smudginess on the surface by rag or other cleaning tools with water 2 If the smudginess cannot be cleaned by water use 97 alcohol until the surfac...

Страница 99: ...surface is smooth 2 Clean the target parts by rag with water or use 97 alcohol 3 When the surface is clean and dry paint the abraded parts of the oil paint by banister brush and make sure the paintin...

Страница 100: ...h water or use 97 alcohol to clean the surface dust and dirty 3 When the surface is clean and dry paint the base material revealed parts with zinc primer or other local primers with the same function...

Страница 101: ...onents inside the MV Station must be replaced by the same components from the same manufacturer and of the same model The model can be found on the marking of the MV Station or the component itself If...

Страница 102: ...requency 60Hz Operating frequency range 59 8 60 5 Hz THD 3 at nominal power DC current injection 0 5 at nominal output current Output power factor rating 0 99 13 1 3 Mechanical parameters Parameter Sp...

Страница 103: ...ware without authority Product malfunctions due to operation attached or neighboring devices running out of the allowed limit values Unforeseen calamity or force majeure The use of supplied software p...

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