K-WANG
- Telephone:+86-15305925923
- contacts:Mr.Wang
- Email:wang@kongjiangauto.com
GE Multilin G60 Generator protection system
GE Multilin G60 Generator protection system
INTRODUCTION
The MultilinTM G60 generator protection system provides comprehensive protection for medium and large generators, including large steam and combustion turbines, combined-cycle generators and multi-circuit hydro units. The G60 includes advanced automation and communication capabilities, extensive I/O options, and powerful fault recording features that can simplify postmortem disturbance analysis and help minimize generator downtime.
Key Benefits
• Secure, high-speed protection elements for complete generator protection, compliant with IEEE® C37.102, extending asset life
• Available Ethernet Global Data (EGD) to ease integration with new and existing GE control systems
• Embedded Synchrophasor measurement capabilities (per IEEE® C37.118), eliminating the need for dedicated PMUs and support for synchrophasor multi-cast (per IEC® 61850-90-5) reducing bandwidth and communications infrastructure costs
• An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors
• Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and comprehensive process bus support (IEC 61850-9-2LE or IEC 61869 or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
• Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
• Increased network availability via failover time reduced to zero through IEC® 62439-3 “PRP” support
• Supports latest edition of waveform capture (COMTRADE 2013) simplifying fault records management
Protection and Control
• 100% Stator and Field Winding Ground Fault Protection (GPM-S & FPM-F Modules)
• Generator stator differential, loss of excitation, overexcitation and generator unbalance protection, and breaker failure
• Power swing blocking and out-of-step tripping
• Reverse/low forward power
• Restricted ground fault, thermal overload protection, directional, time, instantaneous, phase, neutral, negative sequence and ground overcurrent protection
• Protection and control functionality in one box, reducing the number of devices
• High density inputs/outputs to support the control of many switchyard assets – all from one powerful device
• Integrated large, full color display, for real-time visualization and control of the protected bay
Applications
• Medium to large generators typically driven by steam, gas, or hydraulic turbines
• Pumped storage generators used as pumping motors for reservoir storage
• Stand-alone protection or component in automated substation control systems
• Standard protection product offering on new GE generator installations
Generator Stator Differential
High-speed stator differential protection provides sub-cycle detection and high-speed clearing of stator phase faults. Advanced CT saturation and failure detection algorithms maintain immunity to high current AC and low current DC saturation conditions that may occur due to external disturbances, such as transformer inrush or near generator faults, without sacrificing speed or sensitivity.
100% Stator Ground 3rd Harmonic
100% stator ground fault protection is provided through a voltage differential feature that responds to the unbalance of the third harmonic at the machine terminals and at the neutral point. This method is insensitive to the absolute value of the third harmonic and is easily set without the need for on-line measurements. For generators with delta connected PTs, a third harmonic undervoltage element is also offered for detecting a loss of the third harmonic voltage at the generator neutral.
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