DEEP SEA ELECTRONICS PLC - Home Mega Global Solution

More documents

Recommendations

Info

10.3.2 CONNECTION DETAILSDetails of connections to the 55x controller are contained within the 55x operators manual and theLink500Plus Communications software manual. However, the following diagram is included toclarify positions of the connectors for synchronising and load sharing applications.Modem serial connector(RS232 version only)Connector AConnector D (Not fitted to550 non-sync/non load sharemodules)Modem power/reset (RS232only) or RS485 connector(RS485 version only)MultiSet CommunicationsLink (load sharing versions only)P810 interface socketDigital expansion for:P122 digital resistance157 relay expansion545/548 LED expansionP120/P121 analoguegovernor/AVR connector(load sharing versions only)Connector BConnector CNOTE: - Details of connections to the MultiSet Communications Link and theP120/P121 connector are detailed within this publication. See sections headed MultiSetCommunications Link, Interfacing to governors and Interfacing to AVRs.NOTE: - All Load Sharing versions of the 550/555 controller are fitted with either anRS232 or an RS485 communications PCB (specified on ordering). For details ofconnections or applications utilising the RS232 or RS485 connectors, please see theLink500Plus software manual.NOTE:- The 557 controller does NOT have the option of either RS232 or RS485communications. For remote communications applications you must use the 550 or 555controller with the appropriate comms option fited.26DSE Guide to Synchronising & Load Sharing PART 1 ISSUE5 18/3/04 AM
10.3.3 AUTOMATIC SYNCHRONISINGAutomatic synchronising is the control over engine speed and generator output volts prior to theactual paralleling of the supplies. All ‘auto-sync’ and ‘load-share’ versions of the 55x controller canperform this function, although some governors/AVRs will require an external interface device (Seesections entitled P120/P121 analogue voltage module and P122 Digital resistance module).10.3.4 DROOP LOAD SHARINGDroop load sharing is synchronising and closing the generator supplies in parallel. Then, utilisingthe relative droops of the systems to share power proportional to their droop ratios. No externalcontrol is made over the power share, and hence it is not necessary to use the load-sharingversion of the 55x controller. The auto-synchronising version of the controller can be used tocontrol the governor and AVR to effect synchronism and close the supplies in parallel.Multi-set droop load sharingUsing the auto synchronising 550 controller, it is possible to parallel multiple sets, and share theload equally between them. No other control over the load sharing is necessary as this is takencare of by the droop in the systems.However, unless the governors are identically matched and set, the load share will not be equal. Avery small difference in governor characteristics will lead to a large difference in load shares.Additionally as load levels increase though, the generators output frequency will lower due to thegovernor droop. If these issues cannot be accepted, they can be eradicated by the use of the 550load-sharing controller.NOTE: - Multiple identically rated sets running in parallel must have identical droopsettings on their governors/AVRs to ensure equal load sharing between the generators.Non identical droop settings will result in sharing of the load proportional to the droopratios of the sets.Single set – mains supply droop load sharingThe auto synchronising 555 controller (again without the load sharing option) can be used in “nobreak return” duty with the mains supply. The supplies are only closed in parallel for a very shorttime. The amount of power being supplied by the generator at this time is dependent upon thegovernor setting. The 55x module has no control over the power sharing, but in this application, itis not normally a requirement.DSE Guide to Synchronising & Load Sharing PART 1 ISSUE5 18/3/04 AM 27
Page 1 and 2: DEEP SEA ELECTRONICS PLCGuide to Sy
Page 3 and 4: SectionTABLE OF CONTENTSPage1 BIBLI
Page 5 and 6: 18.3.1 MULTISET SETTINGS (NOT APPLI
Page 7 and 8: 3.1 CLARIFICATION OF NOTATION AND T
Page 9 and 10: 4.2 SINGLE SET NO BREAK RETURN WITH
Page 12 and 13: 4.5 MULTIPLE SET STANDBY TO MAINS S
Page 15 and 16: 5.2 CONTINUOUS PARALLEL OPERATIONEl
Page 17 and 18: 6 MULTIPLE GENERATORSThere are many
Page 19 and 20: Illustration6.3 MULTIPLE SETS (STAN
Page 21 and 22: 8 THE NEED FOR SYNCHRONISINGBefore
Page 23 and 24: 10 REQUIREMENTS FOR SYNCHRONISATION
Page 25: 10.3 55X CONTROLLER10.3.1 FUNCTION
Page 29 and 30: 11 LOAD SWITCHING DEVICESThe parall
Page 31 and 32: 12.3 CONNECTION DETAILSConnection t
Page 33 and 34: 12.3.4 LOCATION OF SW1 AND SW2 SELE
Page 35: 13.3 CONNECTION DETAILSConnection t
Page 38 and 39: 13.4.4 LOCATION OF SW1 AND SW2 SELE
Page 41 and 42: 15 55X MULTISET COMMUNICATIONS LINK
Page 43 and 44: NOTE: - Only the “end” modules
Page 45 and 46: 16 55X CONTROLLER CONFIGURATION FOR
Page 47 and 48: 16.2 AUTO SYNC SETTINGSGenerator Au
Page 49 and 50: Generator AutoSynchronising Setting
Page 51 and 52: Multi-set settingsFunctionMultiset
Page 53 and 54: 17.2 LOAD CONTROL(Only available on
Page 55 and 56: 18 ON SITE COMMISSIONING18.1 DISABL
Page 57 and 58: 18.3 55X CONTROLLER COMMISSIONING A
Page 59 and 60: 18.3.2 VIEWING THE 55X SYNCHROSCOPE
Page 61 and 62: 18.3.4 FREQUENCY SYNCHRONISER SETUP
Page 63 and 64: 18.3.5 VOLTAGE MATCHING SETUPSynchr
Page 65 and 66: Load Level SettingsFunctionLoad par
Page 67 and 68: 19 TYPICAL CONNECTIONS19.1 TYPICAL
Page 69 and 70: 19.3 TYPICAL CONNECTIONS FOR A 556T
Page 71: 20 APPENDICES20.1 530 AS MAINS / GE

DEEP SEA ELECTRONICS PLC - Home Mega Global Solution

Create successful ePaper yourself

Delete template?

Save as template?