Load-shedding controller PLM630

Product catalog summary

Overview
The PML630 is a load-shedding controller from ABB's Relion® 630 series, designed for industrial power networks. It prevents blackouts by efficiently managing load-shedding and complies with the IEC 61850 standard, ensuring compatibility with other Relion devices. It supports both new and existing installations.

Power Management
The PML630 is crucial for Power Management Systems (PMS), providing functionalities like load-shedding, generator control, and power-sharing to maintain system stability during disturbances.

Load-Shedding Functions
The controller supports four load-shedding types: fast, slow, manual, and underfrequency. Fast load-shedding addresses power deficits quickly, slow load-shedding manages overloads, manual load-shedding allows operator intervention, and underfrequency load-shedding acts as a backup.

Network Configuration
Utilizing IEC 61850 GOOSE messaging, the PML630 communicates efficiently with various IEDs for load-shedding. COM600 provides monitoring and control through Web technology.

Fast Load-Shedding
This function calculates power balance during deficits, prioritizing loads to shed based on operator-defined priorities, and initiates corrective actions before frequency drops.

Slow Load-Shedding
Activated during overloads, this function prevents tripping by shedding loads based on priority, using overcurrent protection and power demand calculations.

Manual and Underfrequency Load-Shedding
Manual load-shedding allows operator-initiated actions, while underfrequency load-shedding triggers actions when system frequency falls, with two stages for gradual management.

Blocking and Inhibition
Load-shedding can be blocked due to communication issues or manually. Load feeders can be inhibited from shedding through operator actions or system events.

Communication and Configuration
The PML630 supports IEC 61850 communication, offering reliable Ethernet technology and easy configuration changes. It manages extensive networks through peer IEDs.

Engineering and Application Configuration
Configurable via a Web interface and PCM600 tool, the PML630 adapts to specific project requirements and integrates with external systems for comprehensive solutions.

Performance
In Configuration A, load-shedding commands execute within 60ms, while Configuration B achieves actions within 90ms, ensuring rapid response to contingencies.

Redundancy Solutions
The document describes a communication-based redundancy solution using the Parallel Redundancy Protocol (PRP) and IED-based redundancy involving PML630 IEDs and COM600 units in HSR or PRP configurations.

PML630 Load Shedding Controller Overview
The PML630 utilizes IEC 61850 communication with a GOOSE profile for data exchange and supports various load-shedding types, with extended options in certain configurations.

Human-Machine Interface (HMI)
Features both web and local HMI, providing a single line diagram, status indications, alarms, events, and operational parameters with multicolor alarm indications and programmable function buttons.

Supervision and Control Functions
Offers self-supervision, control functions, and disturbance recording, which is non-volatile and can be triggered post-load shedding.

Programmable Logic and I/Os
Includes programmable logic with 14 binary inputs, 9 binary outputs, and various current and voltage transformer inputs.

Communication and Configuration
Optimized for use with Relion series and COM600, using IEC 61850 MMS profile for display data and function control, integrating with external systems.

Contact Information
For further details, contact ABB Oy, Distribution Automation in Finland.

Catalog excerpts

Load-shedding controller

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Compact load-shedding solution for industrial power networks PML630 is a power management IED which prevents disturbance-related blackouts and power outages in industrial power plants through its extensive loadshedding functionality. PML630 is a member of ABB’s Relion® product family and part of its 630 product series, which is characterized by functional scalability and flexible configurability. PML630 complies with the IEC 61850 standard and offers seamless connectivity with other Relion 615, 620 and 630 series IEDs, RIO600 I/O units and COM600, using GOOSE and MMS communication profiles when...

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and power capacity information from an external system regarding generators Initiates power balance calculations on activation of a critical signal (also called contingency) such as: − − Opening of a generator or grid transformer feeder circuit breaker − − Opening of a bus coupler feeder or tie line (network) circuit breaker − − Lockout of any protection function of the above listed feeders − − Lockout of a generator turbine protection function −− Any user-configured external event, based on projectspecific requirements such as the rate of frequency decay Uses the actual measured power from all...

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Blocking can also be initiated manually either via the local or Web HMI of the PML630 or COM600. Load feeder inhibition for load-shedding A load feeder can be disabled for load-shedding through: −− An operator action − − A system action when the load feeder IED loses communication with PML630 − − Any external signal or event, such as trip-circuit supervision failure Communication PML630 supports the IEC 61850 standard for communication in substations. Using GOOSE communication profiles for load-shedding has the following advantages: − − Substation LAN infrastructure for binary and analog data...

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− − Load-shedding display configuration for COM600 − − Generation of channel allocation of the RIO600 I/O modules in PDF format − − Generation of the list of IEDs involved in load-shedding in Excel format Performance In Configuration A, the end-to-end performance (from tripping of the power source to initiation of a load-shedding command to a load feeder) is achieved within 60ms. In addition to supporting standard IED parameters, easy engineering of load feeder IEDs to implement the loadshedding functionality is also supported. In Configuration B, the load-shedding action in power network area...

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External systems Generator data Load Shedding data Load Shedding control Load shedding inputs REF620 Load shedding Load shedding 6 Load shedding controller | PML630

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IEC 61850 communication MMS prole - for load shedding display data and function control Engineering and conguration - Optimized with Relion 630, 620 and 615 series, RIO600 and COM600 Web HMI Disturbance records - analog recording - non-volatile - post triggering of load shedding function Disturbance records n Disturbance records 2 10:23:45 Disturbance records 1 IEC 61850 communication GOOSE prole - for load shedding functionality processing input data and shed commands - data exchange with peer PML630 IEDs - for load-shedding data and control information from external systems Control functions...

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