Power System Studies

Easergy MiCOM P44x provides high speed and high performance distance protection for all overhead lines and cable applications and offers a comprehensive range of protection functions as standard. Models available: MiCOM P441, MiCOM P442, MiCOM P443, MiCOM P444, MiCOM P445, MiCOM P446

Features:

Easergy MiCOM P44x is complemented by various serial and Ethernet communication protocols including IEC61850 and a multi-language HMI featuring English, French, German, Spanish, Russian and Chinese. Protection is further enhanced by the use of Programmable Scheme Logic within the device.

The range offers quadrilateral (polygon) or mho characteristics with a long history of high performance, load blinding areas, comprehensive range of teleprotection schemes, Power swing alarm and blocking and Multishot autoreclosure with check synchronism.

Housed in 40TE, 60TE or 80TE, 4U case sizes, this advanced distance protection range has fault clearance times of 0.7 to 1 cycle depending on model.  Easergy MiCOM P441, P442 and P444 operate on Quadrilateral distance characteristics, whereas Easergy MiCOM P443, P445 and P446 offer both Quadrilateral and Mho distance characteristics.

Latest communication protocols & Ethernet Redundancy 
Fully Equipped with the latest communications protocols (IEC61850 Ed1 & Ed2 available in the same device, selection by setting).
Maximum availability and reliability of Ethernet communications thanks to the implementation of PRP/HSR standard redundancy protocols with an instantaneous recovery time (0 ms) in case of network failure.
Dual IP address allows the device to be connected to 2 independent communication networks (e.g, SCADA system network & Maintenance network)
Universal IRIG-B input (automatically detects modulated or unmodulated signal)

Major enhancement to Cybersecurity 
Operational & Cybersecurity, compliant to IEC 62351, helps protect installations with security based on embedded features such as Role Based Access Control (RBAC), Port Hardening, Security Logs and Access Traceability. The IED by default includes RBAC with different users defined and a Security Administrator.

The REM615 ANSI is a dedicated motor relay perfectly aligned for the protection, control, measurement and supervision of asynchronous motors in generation plants and manufacturing and process industries.

REM615 is a member of ABB's Relion product family and a part of its 615 protection and control product series. The 615 series relays are characterized by their compactness and withdrawable design. Engineered from the ground up, the 615 series has been designed to unleash the full potential of the IEC 61850 standard for communication and interoperability between substation automation devices.

Scope

• Motor protection for synchronous and asynchronous motors and their drives in manufacturing and process industry

Key benefits

• Maximized capital by keeping assets working longer with designs that require less equipment and space
• Enhanced safety by reducing hazards with safety-conscious designs
• Increased reliability by maintaining vital operations with steady, high-quality power every minute of every day
• Reduced operating costs with effective energy management and maintenance strategies
• More flexible system upgrades without rewiring or changing components
• Ease of integration with non-proprietary IEC 61850 communications

Key features

• Draw out design
• Machine differential
• High-impedance (HIZ) fault detection
• Arc flash detection (AFD)
• Ring-lug terminals for all inputs and outputs
• Large, easy-to-read LCD

Load flow studies will be carried out with the Plant operating at normal/worst and rated load operating conditions. Load studies for all conditions of operation will be carried out based upon anticipated demand (load schedule) of the Peak Valley of low voltage high voltage Bus systems.

The following output data will be presented as a minimum for all load flow studies

• Busbar voltages in terms of per unit of busbar rated voltage and phase.
• Real and reactive components of power flow past a point in the system, i.e. Busbar and feeder in MW and Mvar.
• MW and Mvar losses at the optimum transformer tap settings. The optimum tap setting being that which ensures at minimum load and full load, the voltage remains within specified tolerance limits (+/- 5% of the rated busbar voltage).
• Loading of all the branches (transformers, cables etc.) in terms of % of their rated capabilities.
• Total system demand, losses, and loading of the network in MW and Mvar.
• Power factor at each busbar.
• Voltage drop in feeder circuit cables.

Studies will be carried out which demonstrate co-ordination and discrimination of protective devices in such a manner that a fault appearing at a given point in the system is cleared by the protective device immediately upstream of the fault and by that device alone. Circuit Breakers upstream of the operated protective device will not be tripped.

The following types of fault will be simulated:

• Three phase symmetrical fault
• Line to Line fault
• Line to Earth fault
• Line to line to Earth fault

The following output data will be presented as a minimum for all short circuit fault studies:

• Initial symmetrical fault current (l”k)
• Peak asymmetric fault current (lp)
• Symmetrical breaking current (lb)
• Steady state short circuit current (lk)
• Percentage dc component (ldc) (only presented for balanced 3-phase faults)

Short circuit currents on each busbar and line will be used to establish the interrupting and momentary ratings of circuit breakers, MCCBS, fuses and other switching devices at busbars and feeders.

Feeder terminal REF 543
The REF 543 feeder terminal is designed for protection, control, measurement and supervision in medium voltage networks
The REF 543 feeder terminal can be used with different kinds of switchgear, including single busbar, double busbar and duplex systems. 

The protection functions also support different types of networks, such as, isolated neutral networks, resonant-earthed networks and partially earthed networks. The application area also covers medium-sized three phase asynchronous motors as well as protection and control of shunt capacitor banks used for reactive power compensation. In addition to protection, measurement, control, condition monitoring and general functions, the REF 543 feeder terminals are provided with a large amount of PLC functions, which allow for several automation and sequence logic functions, needed for substation automation, to be integrated into one unit.

The data communication properties include the following communication standards: SPA bus, LON bus, IEC 60870-5-103, IEC 61850 via SPA-ZC 400, Profibus DPV1 via SPA-ZC 302, DNP 3.0 and Modbus communication with higher level equipment. Further, the LON communication together with the PLC functions minimizes the need for hardwiring between the feeder terminals.

Scope

Feeder protection relay
Product benefits

• Protection functions for many different types of power networks
• Programmable logic functions (PLC)
• Wide support for different communication protocols
• Optical communication for fast disturbance-free communication

Product features

• Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers
• Fault locator for short circuits in all kinds of network
• Support for IEC 61850 protocol through the SPA-ZC 400 adapter
• 25 binary inputs and 18 output relays

The Agile P652 is a dedicated protection relay intended for protection of  two winding transformers. The P652 relay performs an important role with its diagnostic features for improving asset health monitoring. These relays are CE marked for safety.

The P652 provides  extensive protection functions including high-speed differential, inrush restraint, Restricted earth fault (high or low impedance modes), thermal overload, backup overcurrent / earth-fault /negative sequence overcurrent protection (HV and LV) and breaker failure detection for HV and LV breakers.

P652 relays offer essential supervision like measurement, monitoring and  recording  functions, communication  protocols for transmitting relay data to a supervisory control system via communication networks, and  an  intuitive HMI for ease of access and configuration. The relay is easily customizable using programmable BI/BO/LEDs/AND logic. The software tools make setting a simple task, and permit access to all the recorded information for monitoring, maintenance and troubleshooting purposes. The hardware capability is broadened by a universal auxiliary power supply range to permit standardization in procurement and inventories.

Customer Benefits:

Optimised protection for Transformer applications
Supports all typical two-end (winding) applications
Cost effective
Measurement / protection / monitoring in one box
Front USB port for local communication
Flexible SCADA communication options
Universal, wide-range auxiliary supply
Diagnostic / maintenance facilities
Identical form factor with P50 Agile basic feeder/motor relays