Network Stability and Synchrophasor Measaurement System

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The N60 network stability and synchrophasor measurement system is a flexible device intended for the development of load shedding, remedial action, special protection schemes and wide area monitoring and control. Like no one device before, the N60 shares real-time operational data to remote N60s so the system can generate intelligent decisions to maintain power system operation.

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Key Benefits

• Scalable synchrophasor measurements with up to 6 PMUs per IED reducing synchrophasor cost by up to 80%

• Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution 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

• Exceeds the latest IEEE C37.118 standard for PMU measurement devices with a TVE of less than 1%, Protection and Metering class synchrophasors and multi-cast IEC 61850-90-5 support

• Uninterrupted synchrophasor measurements during fault and disturbances providing highly reliable capture of data for critical control functions and postmortem analysis

• Three independent fiber or copper Ethernet ports for simultaneous/dedicated network connections with advanced 1 microsecond time synchronization via LAN with IEEE 1588 support

• Simplified system integration with direct connection to JungleMUX SONET, TN1U SDH and TN1Ue SDH networks

• CyberSentry™ provides high-end cyber security aligned to industry standards and services (NERC CIP, AAA, Radius, RBAC, Syslog)

• Supports latest edition of waveform capture (COMTRADE 2013) simplifying fault records management

• Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization

• An integrated large, full colour 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

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Applications

• Decrease blackouts by identifying network instabilities and taking fast preventative action

• Increase utilization of existing investments by identifying power transfer capability on existing lines

• Compliments existing protection and control by sharing power and utilization information with existing systems to enhance system security

• Facilitate contingency planning through continuous synchrophasor data collection and post-mortem analysis

• Provides enhanced state estimation for SCADA to optimize system wide load shedding and remedial action schemes

• Mitigate system critical conditions such as power system dampening and loss of synchronism through the use of enhanced automated control to reduce outages

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Protection & Control

Key Benefits

• Underfrequency, overfrequency, and rate of change of frequency (df/dt)

• Out-of-step tripping and power swing blocking

• Thermal overload and phase instantaneous overcurrent

• Synchrocheck

• Overvoltage, undervoltage

• FlexMath for performing automated network control for applications such as automatic load shedding, power balancing and remedial action schemes

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Protection and Control

The N60 incorporates a wide range of protection and control functions that are typically required for special protection schemes. These protection and control elements along with the use of the advanced FlexLogic, FlexMath, and FlexElements, allow for creating automated system controls for customized special protection schemes

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Monitoring & Metering

Key Benefits

• Phasor Measurement Unit (synchrophasor) according to IEEE® C37.118 (2011) and IEC® 61850-90-5 support

• High-speed reporting 120fps (Pclass)

• Magnitude and phase calibration

• Dual reporting (P & M class simultaneously)

• Aggregation capabilities

• Multiple configurable PMU elements (up to 4)

• PMU recording configurable (46 channels)

• Extended protection and control features

• Proven family of devices (over 100000 devices installed)

• Data Logger – Up to 16 channels with sampling rate up to 1 sample/cycle

• Setting for security audit trails for tracking changes to N60 configurations

Monitoring & Diagnostics

The C70 includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.

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Communications

Key Benefits

• Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs

• Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services

• Embedded IEEE 1588 time synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs

• Direct I/O secures high-speed exchange of binary data between URs

• Increase network availability by reducing failover time to zero through IEC62439-3 “PRP” support

Advanced Communications

The N60 provides advanced communications technologies for remote data and engineering access, making it the easiest and most flexible Motor protection relay to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner. The N60 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.

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• IEC 61850 Ed. 1/Ed. 2 with 61850-9-2 (Process Bus) and 61850-90-5 (synchrophasors) support

• DNP 3.0 (serial & TCP/IP)

• IEC 60870-5-103 and IEC 60870-5-104

• Modbus RTU, Modbus TCP/IP

• HTTP, TFTP, SFTP and MMS file transfer

• Redundant SNTP and IEEE 1588 for time synchronization

• PRP as per IEC 62439-3

• Supports Routable GOOSE (R-GOOSE)

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