Thermo Power Plant Plomin 2
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Thermo Power Plant Plomin 2 nature :: energy :: končar

THERMAL POWER PLANT PLOMIN 2 The thermal Power Plant Plomin, Unit 2 (TPP2), with 210 MW output, is located on the eastern coast of the Peninsula of Istria at the very end of Plomin Bay. The main buildings, the boiler room and the powerhouse, are built next to Unit 1. All the other facilities with the exception of the sea cooling water pumping station, the quay and the ashes depot are placed within the fenced area of the Plant. The quay and the sea cooling water pumping station are located in Plomin Bay, while the ashes depot is about 1 km away from the Plant. TEP 2 is jointly owned by the...

Thermal Power Plant Plomin 2

STEAM GENERATOR I GYPSUM DEPOT V LIME STONE GYPSUM WASTEWATER FROM FLUE GAS DESULPHARIZATION PLANT COOLING WATER

SHIP UNLOADING Thermal Power Plant Plomin 2 BASIC TECHNOLOGY PROCESS

BOILER The boiler consists of a steam generator and various auxiliary systems built into the boiler or around it, participating in the process of steam production. The manufacturer of the steam generator is the company “Buro Bakovic" from the town of Slavonski Brod, Croatia, under Sulzer company licence. Pulverized coal is used as the main fuel. The coal is transported from the depot by belt conveyors to six coal bunkers placed between the power house and the boiler. From the coal bunkers coal is continuously transported to mills where it is ground and dried. The pulverized coal dust...

Thermal Power Plant Plomin 2

ENVIRONMENT PROTECTION Appropriate technical solutions have been applied to protect the environment from the impact of thermal power plant operation so as to keep that impact within the limits prescribed by the law and regulations. Within the coal supply system reloading is performed by a closed ship-unloader, transport by closed conveyor tracks, and the storing on the open depot is performed along with a simultaneous wetting process. The solid incombustible ingredients from the fuel are taken care of without ground disposal. Flying ashes separated within the electrostatic precipitator,...

All manual and automatic actions in the processes of the plant are controlled and supervised from the central control room. Local control is reduced to a necessary minimum and limited exclusively to those elements that do not require any direct control action during the running of the Unit. The main unit control system is TELEPERM XP (Siemens), while for the turbine control TURBOTROL (ABB) is applied. For the control of the electrical equipment a system with a PC network and SCADA software, named PROZA R/F, made by KONCAR, is implemented. Electrical equipment includes: Turbo generator and...

TURBO GENERATOR AND UNIT TRANSFORMER Turbo generator with auxiliary systems The turbo generator is a three-phase hydrogen-cooled synchronous generator. The stator frame is gas-tight with regard to the outer atmosphere, designed in accordance with standards for machines working in an explosive environment. The stator core consists of insulated magnetic laminations arranged in segments separated by ventilating ducts and tightened elastically inside the stator frame. The stator winding is made as a two-layer bar diamond winding with two parallel branches. The rotor body is one massive piece...

The connection between the generator and the unit transformer, the neutral point and branches for connection of the equipment to generator voltage (cubicles with voltage transformers and overvoltage protection, the excitation transformer and the auxiliary supply transformer) is performed by metal enclosed busbars. The conductor and the enclosure are made of electrolytic aluminium of 99.5% purity. The diameter and the wall thickness of the main line conductors (generator – unit transformer) is 440/14 mm, and the enclosure is 960/5 mm. The branches are made with the conductor of 120/4 mm and...

TPP2 CONNECTION TO THE POWER GRID 220 kV Switchyard 220 kV switchyard is an outdoor air insulated switchgear (AIS). It consists of 12 bays with double busbar system and a coupling bay. The busbars are tubular, made of aluminium alloy E-Al-Mg-Si 0.5 F22 with a diameter of 120/100mm, fastened to supporting insulators. The switchyard is equipped with circuit breakers, disconnectors, instrument transformers and surge arresters, as well as line traps and capacitors for high frequency communication equipment. Three-pole SF6 circuit breakers are of the one chamber per phase type with a hydraulic...

110 kV Switchyard The existing switchyard has been extended by two transformer bays and one OHL bay. The concept of the existing switchyard has been retained for the extension too. The only difference is that SF6 circuit breakers instead of pneumatic ones are applied. Thermal Power Plant Plomin 2

6.3 kV Switchgear AUXILIARY AND GENERAL POWER SUPPLY Auxiliary and general power supply consumers are divided according to their rated voltage into high voltage (6.3 kV) and low voltage (0.4 kV) consumers. Auxiliary power supply consumers are supplied by a three winding regulating transformer, 25 MVA, transformer ratio 13.8/6.3 kV, connected to the generator voltage by branches on metal enclosed busbars. General power supply consumers are fed by a double winding regulating transformer, 25 MVA, transformer ratio 220/6.3 kV, fed from 220 kV switchyard. Auxiliary and general power supply...

The low voltage auxiliary and general power supply switchgear consists of main distribution panels and subdistribution panels. The main auxiliary and general supply distribution panels, as well as the main lightening supply distribution panel, placed in the space between bunkers, are supplied by corresponding 6.3kV switchgears though dry-type transformers 6.3/0.4 kV. The auxiliary power supply has two main distribution panels. Each of them is supplied from a separate transformer 1000 kVA connected to separate sections of the 6.3 kV switchgear. They supply power consumers either directly or...

The supply of consumers whose reliable operation is of special importance is performed from the uninterruptible power supply switchgear. Uninterruptedly of the supply of DC consumers is achieved by a simultaneous supply of consumers and charging of storage batteries. In the event of a grid failure and when the rectifiers stop working, batteries continue to supply connected consumers without any interruption. Uninterruptedly of supply of AC consumers is based on power consumption from a storage battery in the event of a failure of grid voltage. During normal operation, DC/AC converters are...