User:Georges ohanessian/sandbox

Installation and Civil Work systems:
A set of PV modules connected in a parallel way with each other is aimed to generate a system with an optimal level of output alongside with the synchronization of the current ranges with the input of the inverter’s model chosen. These PV modules are hot-dip galvanized steel which ensure an adequate durability strategy and a useful service life which protects the conditions of soil aggressiveness and environmental conditions. Masrik ’s Generating system comprises of 20 blocks of 2.3 MW operating and combined panels. Those direct current combiners possesses fuses and surge arrester as a way of installation protection and switch-disconnector to manipulate the maintenance and the operation. Moreover, the design of the generation system will account the location at an altitude of 1930 m above the sea level.

Regarding the equipment and assets, The role of the inverter is to convert the current from AC to DC or the vice-versa in order to evacuate to the grid and adapt to the application standard. The 173280 modules of the installation of 46.55MW (Each with 320Wp) needs 40 inverters for the PV plant. Secondly, The combiner Boxes which are also known as Junction Boxes (JB) are utilized to protect the strings against the electrical faults and bring together up to 30 strings into one output. These JB will be equipped with Fuses, Switch-disconnector, Overvoltage Devices (Electrical Discharge), Ground Terminal and Ground connection (To protect the device from electrical risks). In addition, 20 transformers will be applied with double secondary windings to optimize the interconnection with the 2 low voltage output inverters and to minimize the losses and the Auxiliary Medium voltage power transformer will be located inside of Connection Center, employed to step down medium voltage of the grid connection of auxiliary services electrical consumptions of Control Center and Warehouse.

There are 2 categories of Cables, The Direct Current (DC) and Alternating Current (AC)  Cables. The Direct Currents are going to be used to connect the modules with combiners boxes and there will be others to connect the combiner boxes with PV inverters. Whereas, AC Cables are to be employed to fed all the auxiliary services. Each cable will be identified with its specific color, marked with the length of each roll as well as detailed description about the cable as well as the supply contract. The prints and marks are mainly for the identification of the manufacturer and the manufacturing year, name of the cable, mark of the certification and the number with the cross section of the cables. A grounding system installation should limit the effect of ground potential gradients to such voltage and should provide safety to people and equipment as well as ensure the continuity of the service.

The MV Cables for the PV plant:
 * Conductor
 * Conductor Screen
 * Insulation
 * Insulation Screen
 * Metallic Screen
 * Tape Separator
 * Oversheath

There will be these types of CC Switchgears:
 * Transformer
 * Measurement
 * Incoming and outgoing switchgear

The Total occupied area of the PV Plant is 973409 m2, where the installation takes into account:
 * 1) Free obstacles with adequate dimensions for vehicle movement
 * 2) The land should be sufficiently compacted base with a cleared vegetable layer.
 * 3) The construction should comply with the geotechnical report conditions

There are different types of road implemented:
 * Perimeter Road: Joining the internal roads to improve the mobility
 * Internal roads: to allow access to various facilities during construction, maintenance and operation on a safe way
 * Drainage Roads: For the drainage system designed in the plant

Different Building Infrastructures will be the following:
 * Control Center (75 m2)
 * Warehouse (75 m2)
 * Parking Lot
 * Inverter Transformer Center (ITC)
 * Connection Center (CC)

The design and the civil works will be implemented based on the RA Construction Standard requested by the ministry of construction. Moreover, the perimeter fence, the drainage and the water system will meet the environmental conditions as well as the ecosystem’s protection.