Category: GE

MV7000 — Enhanced technology Key benefits

• Peak power density

• High reliability and availability

• Power scalability with customizable ptions featuring:

–  Low harmonics without additional equipment

–  Four quadrant operation for regenerative applications

–  Transformerless design for compactness

–  Common DC bus system for energy savings

–  High performance process control

–  Visor Connect supports warranty with remote real-time support

and advice

• Front access maintenance

Best-in-class power density

The phase power stack is the main modular building block of the three

level inverter.

•  Compact enclosures thanks todouble sided cooling of the IGBTs

•  Just 18 IGBTs at 3.3 kV can deliver 15 MW

•  Control hardware mounted on a slide in/out frame

•  Simplified cooling system architecture and gate drive power supply topology

• Fuseless design

Benefits:

• Peak power density — our drive can deliver up to 15 MW with just

18 IGBTs, which is equivalent to a power density of 1.5 MVA/m3

• High reliability and availability — over 10 million hours in operation

across an installed base of over 8.5 GW

• Power scalability with à la carte option packaging that can be

adapted to a wide range of applications

• A full family of drives — GE is your one-stop provider with a

wide portfolio of drives

Advantages of a medium voltage variable frequency system

Reliability & availability 

The higher reliability and lower maintenance needs of a variable

speed drive system compared to gearboxes and hydraulic couplings

result in lower lifecycle cost.

Saving energy, caring for the environment

In today’s world more than ever, energy saved is energy produced.

For a variety of loads, from water pumps to gas compressors, variable

speed control offers the best way to capture energy savings.

Precise power delivery

In many applications, the superiority of electrical control simply cannot

be matched by mechanical systems.

Precise control of power means better outcomes, from the flatness of a steel

sheet to the accuracy of offshore Oil & Gas exploration.

Cutting-edge power electronics technology and decades of process

expertise come together in the MV7000 — a world-class water-cooled

medium voltage drive suitable for a wide range of power conversion

applications. Easy to install and maintain, the drive offers high reliability

and availability and helps increase the uptime of critical processes.

The MV7000 provides a flexible approach to achieve a customized

solution across different applications.

With the MV7000 our power conversion expertise helps increase

operating efficiency, power availability, plant throughput, operational

precision, and process yield. We are helping our customers meet the

demands and opportunities of the new electric age.

High reliability and availability

The MV7000 is a great example of a design philosophy based on minimizing

component count while retaining peak performance.

Press-pack IGBT (PPI) power devices enable:

• The capability to limit overcurrent with safe turn-off under all operating

and failure conditions

• Case rupture-free due to pressed contacts and no-wire bonding

• N+1 series redundancy thanks to the capability of PPI for continuous

conduction under failure mode

• Long life expectancy even under load cycling

• Effective performance even at low motor frequency operation

The GE Ethernet/IONet switches are available in two hardware forms:

ESWA and ESWB. Each hardware form is available in five versions 

(H1A through H5A) that vary in fiber-optic port configuration options,

which include no fiber ports, multi-mode fiber ports, or single-mode

(longer distance) fiber ports. Refer to the IS420ESWAH#A IONet Switch

Specifications table and the IS420ESWBH#A IONet Switch Specifications

table for these fiber option details.

The ESWx switches can be DIN-rail mounted using one of three GE qualified

DIN-rail mounting clips, depending on the hardware form (ESWA or ESWB)

and the selected DIN-rail mounting orientation. The clips are ordered separately,

in accordance with the following table. Mounting screws are included with each

switch.

GE’s product line of industrial, unmanaged Ethernet 10/100 switches,

ESWA and ESWB, are specifically designed to meet the needs of real-time

industrial control solutions and are required for all IONet switches used in

a Mark* VIe and Mark VIeS Safety control system.

To meet the requirements for speed and functionality, the following features

are provided:

• 802.3. 802.3u, and 802.3x compatibility

• 10/100base copper with auto negotiation

• Full/half duplex auto-negotiation

• 100MbpsFXuplinkport

• HP-MDIXautosensing

• LEDstoindicate status of Link Presence, Activity and Duplex, and

Speed per port (each LED has two colors)

• LEDtoindicate power status

• Minimum256KBbufferwith 4 K media access control (MAC) addresses

• Redundant power supply inputs (Diode-OR’d)

FEATURES

• Protections:

– Transformer Percent Differential  (87T)

– Instantaneous Differential (87/50)

– Restricted Ground Fault (87G)

– Overexcitation

– Volts/Hz (24)

– Phase/Neutral/Ground TOCs (51P, 51N, 51G)

– Phase/Neutral/Ground IOCs (50P, 50N, 50G)

– Phase and Neutral directional OC (67P, 67N)

– Phase under- and over-voltage (27P, 59P)

– Auxiliary under- and over-voltage (27X, 59X)

– Neutral over-voltage (59N)

– FlexElements

– universal comparator

• Controls:

– Six Setting Groups

– Under- and Over

– frequency

– Digital Elements

– Digital Counters

– Selector Switch

– Synchcheck (optional)

• Inputs/Outputs

– Contact Inputs and Outputs

– Virtual Inputs and Outputs

– Direct Inputs and Outputs

– Remote Inputs and Outputs(GOOSE)

INTRODUCTION

Introduction:

Multifunctional digital relay for transformer

protection:

• Configurable multi-protection transformer package

• Up to 4 sets of CTs and/or VTs (T60) – Optional 5/6 windings

• Up to 6 sets of CTs and/or VTs (T35)

• Programmable FlexLogic

• GOOSE and Direct I/O messaging

• Easy access through HMI(Human Machine Interface)

• Easy for monitoring and control PC program

• Varieties of communications

• Metering and Monitoring:

– Currents(phasors and true RMS)

– phase, ground, neutral, symmetrical components and demand

– Voltages(phasors and true RMS)

– phase, ground, neutral and symmetrical components

– Power

– active, reactive, apparent, power factor

– Energy and energy demand

– Per-phase differential and restraint currents

– Ground differential and restraint currents

– Per-phase 2-nd and 5-th harmonics on differential currents

– 2-nd to 25-th harmonics currents and THD

– Oscillography

– Event Recorder

– Data Logger

– One PMU Element

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

Protection and Control

As part of the UR family of Protection &Control devices, the G60 offers a high

degree of modularity in its design and functionality, providing superior performance

while meeting the toughest requirements of the marketplace.

Advanced protection and control features of this relay includes:

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.

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

• Advanced IEC 61850 Ed. 2 implementation, complete settings via SCL files and IEC 61850-9-2 process

bus solution enable resource and platform managing optimization and reduce cost of ownership

• Increased network availability via failover time reduced to zero through IEC® 62439-3 “PRP” support

• CyberSentry™ provides high-end cyber security aligned to industry standards and services (NERC®

CIP, AAA, Radius, RBAC, Syslog)

• Advanced fault and disturbance recording, including internal relay operating signals, eliminating the

need for external recording devices

Multilin™ G60

Comprehensive Protection for Generators

The Multilin G60 generator protection system provides comprehensive protection for medium and

large generators, including large steam and combustion turbines, combined-cycle generators and

multicircuit 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.

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.

Breaker Failure Protection

The breaker failure protection element monitors for timely operation of the connected breaker.

If a trip command is not successful in operating the breaker and clearing the fault, the breaker

failure element can be used to send trip signals to upstream breakers to clear the fault.