GE VME-PMC-CADDY VME-Carrier Board

DualControl (Power Bridge Warm Backup)

The EX2100e Regulator system is available in a warm backup (WBU) configuration,

which includes dual exciter control I/O and protection. The control includes M1 (Master

One) and M2 (Master Two), with two IGBT bridges that can accept separate or shared ac

input power. The control configuration can also share a common dc output circuit to the

exciter field through the transfer module. M1 and M2 are independent controls, each with

automatic and manual regulator functions. Either M1 or M2 can control bridge firing, as

determined by the operator. In the WBU configuration, M1 controls bridge #1. and M2

controls bridge #2.

To process application software, two independent Universal Controller Stand-alone Board

Version B (UCSB) controllers, with separate PCMs and an output selector module (SCM

or TCM), provide the dc output current for the exciter field (or SCTcontrol winding).

The active power bridge receives the gating commands from the active control (M1 or

M2), and supports the full-field voltage and current needs of the exciter field while the

backup power bridge’s gating circuit is inhibited. The operator has full control to select

which of the dual power bridges is active or inactive. Bi-directional, bumpless transfer

between active and inactive bridges is standard. The active master can also self-diagnose

a failure or missed operation and activate the backup control and power bridge without

operator intervention.

A Safer and Cybersecure Substation

Transmitting the instrument transformers´ measurements digitally

through optical fibers eliminates the risk of inadvertent mishandling

of the current and voltage circuits and makes the relay room a safer

work environment, eliminating hazards and reducing the risk of

personnel injury.

To ensure MU360 have all this connectivity in a cybersecure way, it

has been designed according to IEC 62443 and have all capabilities

described by SL2 of this standard, including RBAC, secure boot and

signed firmware.

Reliable, Interoperable and Future Proof

The MU360 complies with the main standards for digital

substation IEC 61869-9. IEC 61850 edition 2.1 and IEC 61869

13. which guarantees its interoperability and compliance to the

requirements for being the physical to digital interface of modern

digital substations. Furthermore, measurements of each CT/VT

set may be broadcasted in protection and power quality profiles,

allowing multiple Protection, Automation and Control applications

to consume the data without needing extra footprint for acquisition.

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