Power System Studies

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

Power System Studies , Experts and Consultants :We are the Service Provider and Experts in Power System Studies, Power Quality Analysis Service Providers, Motor Starting Study And Analysis, Relay Coordination Study & Analysis, Short Circuit Study & Analysis, ARC Flash Study, Harmonic Study & Analysis, Voltage Drop Study & Analysis And Transient Stability Study. Reliserv Solution is the leading company carrying out Power Quality Analysis. If you are facing any problem related to power quality or want annual power audit we are here. Equipped with best Instrument in the world we carry out Power Quality and Harmonic Analysis. We can measure transient, swells, dip etc very easily. Our team of expertise consist of engineer with expertise of over 40 years which analyse the data of the Power Analyzer and give you the best solution for the problem being faced by you. These are the below Studies what we can Offer. 

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.

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

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.

The following studies will be carried out under the system conditions stated :-

• Stability power system and captive generators with a fault on each bus bar.
• Voltage variations at busbars for drives start up of the largest rated motor with all other drives at standstill (static).
• Voltage variations at busbars for drives start up the largest rated motor with all other drives running (dynamic).
• Motor Reacceleration study.
• Determination of tap settings for the transformers.
• Load acceptance of the small Generator.
• Suitability of starting of largest motor for different modes of operations.
• Response of Power System and generators including frequency variation, voltage variation due to outage of any of the operating generator with normal connected load on the system.
• The dynamic performance of the system with respect to the following minimum disturbances will be studied.
• External Faults
• Internal Faults
• Load Throw off conditions
• Performance of generators with without Grid.
• Dynamic behaviour of Turbo Generators (including generators) in terms of Load Flows Load Sharing during Islanded condition. Internal external disturbances will be reported to establish critical clearing time and set protections accordingly, in case of fault, to avoid tripping of Generators.
• Load-shedding scheme
• Appropriate load shedding scheme will be suggested based on the criticality of loads.
• Islanding scheme to save captive generation during grid disturbance will be suggested. The dynamics of the system will be studied with respect to grid disturbances and the settings of the frequency, voltage relays will be provided .