WOODWARD MSLC-2XT™ Master Synchronizer and Load Control

WOODWARD MSLC-2XT™ Master Synchronizer and Load Control 

DESCRIPTION

Woodward’s MSLC-2XT™ functions with the DSLC-2XT™ control to provide synchronization and load control across Utility and Intertie breakers. The MSLC-2XT/DSLC-2XT combination operates over an Ethernet communication network to control simple or complex generator system applications. This combination, 32 DSLC-2XT’s and 16 MSLC-2XT’s, provide multiple units, multiple segments, utility, and intertie power management for complex power systems. Controls plant wide Import / Export levels while always providing bump-less load transfers with utility.

The MSLC-2XT control combines synchronization, dead bus closing, utility/intertie load sensor, baseload control, import/export control, VAR, power factor, and a master process control in one powerful package.

The MSLC-2XT provides phase matching or slip frequency synchronization, with voltage matching, across a utility or intertie breaker. The MSLC-2XT/DSLC-2XT combination can handle multiple utility connections with a maximum of 8 bus segments in one application.

The MSLC-2XT’s load sensor and load control sense true RMS power and provide a bump-less loading and unloading against a utility grid. Baseload, import/export, process, and utility unload modes control the KW power between different power sources at the same time controlling the reactive power, VAR and power factor. Reactive power is also ramped on and off for the smoothest load transactions between power grids.

The MSLC-2XT communicates via Ethernet, with or without hot swap redundant communication, to control real and reactive loading against the utility by DSLC-2XT equipped generators.The tie breaker mode allows synchronization between multiple generator systems. Segments are connected and power can be measured across an intertie, but no load control is functional when in Tie breaker operation.

FEATURES

 One MSLC-2XT can provide master control for up to 32 DSLC-2XT and an additional 15 MSLC-2XT.

 Two dedicated Ethernet lines for precise system communications between all DSLC-2XT’s and MSLC-2XT’s on the system.

 One dedicated Ethernet Modbus TCP for remote control and monitoring by PLC or DCS system.

 Redundant Ethernet communications for enhanced reliability.

 Master MSLC-2XT redundancy, loss of communications with the designated MSLC-2XT master initiates control hand off to the next designated MSLC-2XT master.

 The MSLC-2XT hardware is adjustable for multiple applications.

 Slip frequency or voltage phase matching synchronizing fully selectable with dead bus option in both directions provide full flexibility for intertie and main-tie-main applications.

 Having functions integrated into one box eliminates the need for redundant sensors (like PTs, CTs, and MOPs) that connect to individual modules such as the load sensor and synchronizer.

 Digital signal processing makes the MSLC-2XT resistant to power line distortions and harmonics.

 Three-phase true RMS power sensing provides accurate readings even with unbalanced phase loading and voltage fluctuations.

 Export/import control over multiple utility MSLC-2XT’s in same segment.

 The Woodward ToolKit™ software allows flexible setup using the same basic menu tree as the original MSLC-2 plus an overview screen. Graphical overview of generators and bus bar parameters with trending makes the MSLC-2XT commissioning friendly.

 The Toolkit can be accessed either via one of the Ethernet ports or via USB port.

 Phase angle compensation provides adjustment for additional deviation correction across a transformer.

 The system update feature allows for system reconfiguration.

Detailed explanation of technical specifications

Electrical and Environmental Specifications

Power supply: 12/24 Vdc (range 8 to 40 Vdc), maximum internal power consumption of 32 W.

Working environment: Operating temperature -40 ° C to 70 ° C, storage temperature -40 ° C to 80 ° C, humidity up to 95% (non condensing), demonstrating strong environmental adaptability.

Voltage measurement: The rated voltage is 100-690 Vac, with a maximum of 897 Vac, and it has a rated surge voltage withstand capacity of 6 kV. The measurement frequency range is 30-85 Hz, covering the 50/60 Hz standard.

Current measurement: Provides fully isolated 1A or 5A rated input, with a wide linear measurement range (up to 3 times the rated value on the generator side) and an accuracy of level 0.5.

Input/Output and Mechanical Structure

Discrete input: Optoelectronic isolation, suitable for 12/24 Vdc.

Relay output: The contact material is AgNi, and the load capacity is suitable for various AC and DC applications (note: some high DC voltage ratings are not applicable to the US and Canada regions).

Analog input: 0-10 V/0/4-20 mA, 14 bit resolution, freely scalable.

Shell: Made of metal plate material, used for backplate installation. The size is 250 × 227 × 84 mm, with a protection level of IP20 and a weight of approximately 2.48 kg.

Certification and Compliance

The product has obtained safety certifications from multiple countries such as UL, cUL, CE, CSA, EAC, and has received type recognition from American Bureau of Shipping (ABS) and Lloyd's Register of Shipping (LR) in the maritime field, meeting the strict requirements of industrial and maritime applications.

Typical application scenarios

Large power plants and isolated grid systems: manage the grid connection, load distribution, and power exchange with the main grid of multiple generator units, ensuring input/output power and power factor control throughout the entire plant.

Microgrid and Energy Complex: Achieving power scheduling and disturbance free switching between multiple bus segments in complex systems containing renewable energy, traditional generators, and energy storage units.

Ship and offshore platform power system: With its maritime certification, it is suitable for ship power management systems that require high reliability and redundancy.

Industrial facilities: Provide automatic factory loading/unloading control for large factories with their own power stations, achieving undisturbed load transfer with the public power grid.

Multi utility connection scenario: Within the same bus segment, coordinated control of input/output power for different utility connection points is achieved through multiple MSLC-2XTs.

ToolKit configuration software

Woodward ToolKit software is the key to unlocking the potential of the MSLC-2XT system. It not only inherits the intuitive menu tree structure of the classic MSLC-2, but also provides a graphical overview interface, allowing operators to easily grasp the status, communication relationships, and key operating parameter trends of all controlled DSLC-2XT units. This greatly simplifies the complexity of system configuration, commissioning, and daily monitoring.