Our Solutions

PMS

Power management has grown as a necessity for automated starting and synchronizing the generators and as an overall aid to operators in control of electrical power systems. Traditionally, Operators performed power management manually i.e. starting and stopping generators with feedback (in human-machine control system) established by observing current situation on the network i.e. available power, kW, kVar, kVA, frequency, etc. At the beginning, though not so long ago, synchronization of generators was performed manually (dark lamp test) and that was one of the reasons for various blackouts that occur by non-properly-trained personnel. That is the reason why manual synchronization can still be trained on various power plant simulators. However, power management, found today, has grown much beyond that, especially on electrical power propulsion installations.  All installed power equipment becomes interconnected in the power distribution system and any load variations, starting transients, and network disturbances affect the load and generators that interact and influence each other. The new generation of power networks have complex power system configuration with advanced protection and relaying philosophies that are in close connections with the design and functional operation of power/energy management control system (PMS). In that respect, optimum operation and control of the power system becomes essential for safe operation of the network.  

Power management system (PMS) has become an integrated element of a totally integrated power, automation and positioning system. That is one of the new challenges for PMS. Traditionally, power management system has been analyzing only the current situation on the network and has been considering a limited number of consumers and their control systems. In recent years, advanced functions have been added to power management system to be able to control power generation and consumption by optimizing the instantaneous power flow and use. That is the reason for calling the same control system energy management system (EMS). Usually, different terminology has been used for the same control system, so there is not a big difference whether we call it energy management system (EMS) or power management system (PMS).

A Power Management System (PMS) monitors and controls all relevant operating sections of an electrical distribution network for protecting high voltage equipment from faults, disturbances, and overloading on the transformers, and optimizes the transmission and distribution of power from the utility to its customers. PMS is an open and distributed system based on international standards. It supports easy connection to process and field devices (relays, breakers, re-closers, switches, transformers, generators and more) or to the higher-level control systems of different manufacturers (SCS). The current operating status is clearly visualized by PMS. Different single line diagrams, graphs, charts, curves, tables, trends, alarm lists, status indicators etc add to the overall representation of network status. Important measured values and events, such as operating and fault messages, are stored for later evaluation.

KTC Power Management System (PMS) ensures a balance between consumption and the self-generated or utility-supplied energy needed for economical production operations. To this purpose, the system continually monitors and coordinates generation, demand, and distribution (e.g. generator control, frequency and voltage control). Self-generation can be included into consumption plans to offset electrical utility contracts. This provides the stability of voltage and frequency essential for uninterrupted production, and critical events in the generation and distribution of power are recognized - and, if possible, corrected before they become major problems. Additionally, the fast shedding of defined uncritical loads, for example, helps to ensure a steady supply of electrical power to production. 

 

KTC-PMS Features

Brief technical specifications:

• Control room hardware:

          - Work station: IPC Pentium IV (As minimum requirement)

          - Monitor: 19”...23” (optional)

          - Ethernet switch: 10/100 speed, 16 port

          - GPS system: optional

          - Auxiliary power supply: 110V DC / 110V AC / 230V AC

          - Computer rack cabinet: 650 x 550 x 630 (mm) 

 

• Control room software:

          - Operating system: Windows XP

          - Applications:

                   -OWS: Persia-A software

                   - EWS: Persia-A software

                   - DAS: Data server software

                   - HRG: Historical report generator

                   - ISaGRAF: Logic designing software

 

• Substation room hardware:  

          - PLC: VME - PLC including following cards

                   - One VME.7U sub-rack with one 20-slot backplane.

                   - VME.MEN, A15A CPU modules with MPC8245, 400 MHz, 512 Mb DRAM and dual 10/100 Mbit fast Ethernet (or equivalent)

                        - VME.DIOC32 each with 32 digital input/output channels, electrically isolated (24 VDC)

          - VME.AD16 each with 16 analog (0/4.20 mA) input channel, electrically isolated, 12-bit resolution

                   - VME.DAC812 with 8 analog (0/4.20 mA) output channel, 12-bit resolution

                   - VME.V500-SI16 serial interface modules with 16 RS232 serial ports 

          -Protocol converter: ADAM4520, RS232/RS485, electrically isolated

          - Auxiliary power supply: 110V DC / 110V AC / 230V AC

          - Power consumption: 3kW

          - Panels:

                   - PLC panel: 200 x 800 x 800 (mm), 1 cubicle

                   - Marshaling panel: 200 x 800 x 800 (mm), 1 or 2 cubicle(s), depending on number of I/Os, including terminal blocks, terminal interface cards (interface between PLC I/Os and terminal blocks), input & output interposing relays and protection devices

• Substation room software

          - LCU: local control unit software loaded on PLC

          - Logic: including manual commands and automatic sequences