Pig farm Energy design
Our design organization has completed the design and installation of the power supply system for the pig farm.
More details under the cut ..
DESIGNING POWER SUPPLY
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Plans adaptation of pigs
Plans 2
Switchboards
Horseman
Pregnant
Mother liquor
Rearing
a) Characteristics of the power supply sources in accordance with the specifications for connecting the capital construction object to the public power supply networks.
Maximum power consumption 400 kVA, rated current 25 A.
The category of power supply from branch networks is the third. Back-up power supply of electrical receivers of the 1st and 2nd category is performed from a diesel generator set.
The power supply of the pig-breeding complex is carried out from the projected transformer substation of 400 kVA 10 / 0.4 kV in accordance with the technical conditions for connecting the facility to the public power supply network. The connection point of the transformer substation 400 kVA 10 / 0.4 kV is the bolted connections of the high-voltage metering station installed on the end support of the newly mounted section of the Pobeda 10 kV overhead line. From this end support to a transformer substation of 400 kVA, a 10 kV insulated overhead line with a SIP-3 3 (1x70) mm wire was laid. The input to the substation is made with AAShv-10 3x70 mm cable.
Justification of the adopted power supply scheme of PIG.
Due to the possibility of permanent maintenance of electrical installations, as well as in accordance with the recommendations of the Electrical Installation Guidelines (p. 1.7.57, 7.1.13), the pig-breeding complex is powered from a 380 / 220V network with a TN - C - S grounding system .
c) Information on the number of power consumers, their installed and estimated capacity.
The main consumers of electricity are technological and lighting equipment, electrical ventilation equipment. Rated power of power consumers:
ABK building - Рр. = 41.0 kW,
building of the checkpoint - Рр. = 22.0 kW,
building adaptation pigs - Rr. = 23.0 kW,
building for pregnant queens - 1 - Rr. = 27.0 kW,
building for pregnant queens - 2 - Rr. = 26.8 kW,
hryachnik building - Rr. = 11.5 kW,
building of the mother liquor - Rr. = 67,7 kW,
the building of the queen cell with the nursery - Рр. = 93.7 kW,
Pig Rearing Building - Рр. = 50.0 kW,
lagoons - Рр. = 30,0 kW,
manure collector - Рр. = 11.0 kW,
slaughter area - Rr. = 7.0 kW,
boiler room - Рр. = 10.0 kW,
water intake - Rr. = 5.5 kW.
d) Requirements for the reliability of power supply and power quality.
According to the degree of ensuring the reliability of power supply, power consumers of the pig-breeding complex include:
- to category I - electrical receivers of fire and security alarms;
- to the II category - the complex of the remaining electrical receivers.
e) Description of solutions for the provision of electricity to power consumers in accordance with the established classification in operational and emergency conditions.
The power supply of the administrative and amenity building, the entrance, the boiler room and the water intake is carried out with VBbsHv cables laid in a trench. Distribution cabinets of type PR8501 are installed at the entrance to the administrative and auxiliary building. To account for the electrical energy consumed by the pig-breeding complex, in the RU-0.4 kV of the designed transformer substation 400 kVA, the meter СЭТ3р-02-10А / 1 is installed, the accuracy class is 1.0. The power of the power consumers is performed from the distribution panels in a radial pattern.
The project provides for the shutdown of the ventilation flaps by the fire alarm signal. Control of ventilation systems in buildings of adaptation, pregnant queens, hryachnik, queen plants, rearing is carried out automatically by a signal from the controllers installed in the gallery. In ABK and through passage control of ventilation installations it is carried out by means of ballast-mounted devices installed in place.
f) Description of design solutions for reactive power compensation, relay protection, control, automation and dispatching of the power supply system.
The project provides for reactive power compensation. In the designed substation there is an installation for compensation of reactive power KRM-0.4-100-25UHL3. The protection of the outgoing lines of switchboards and lighting panels from short circuits and overloads is protected by automatic switches. Protection of power cables of working inputs is carried out by automatic switches installed in RU-0.4 kV transformer substation 400/10 kV / 0.4 kV. To protect against overvoltage in the electrical network, the project provides for the installation of overvoltage suppressors OPS1-V 3P in input-distribution devices.
g) List of energy saving measures.
The main energy saving measures are:
- the use of fluorescent lamps;
- the use of electronic control gears (ECG);
- automatic control of outdoor lighting on a signal from photocell;
- automatic control of ventilation systems
h) Information about the power of network and transformer facilities.
The project provides for the installation of a complete transformer substation with a TM-400 kVA 10 / 0.4 kV transformer.
i) Decisions on the organization of oil and repair facilities.
Oil and repair facilities are absent.
j) List of measures for grounding and lightning protection.
The project provides the following measures to protect against direct contact:
- the main insulation of current-carrying parts;
- covers of electrical equipment with a degree of protection;
- the use of ultra-low voltage;
- the use of protective devices off.
To protect against indirect contact project provides:
- protective grounding;
- automatic power off;
- potential equalization;
- double insulation;
- extra low voltage.
On the input to the ABK and the checkpoint, the contours of the re-grounding of the neutral wire are made. The contour is made of a steel strip of 5x40 mm and a corner of steel 63x63x6 mm, R C <10 Ohm. From this contour to the GZSH of the building there is a steel strip 5x40 mm. GZSH installed in the switchboard near the ASU. Circuit breakers are taken according to the Rules of Electrical Code of Clause 1.7.79 with the longest disconnection time in group networks ~ 220V no more than 0.4 s, ~ 380V - no more than 0.2 s, in circuits supplying distribution boards - no more than 5 s. For rooms where animals are kept, the disconnection time in group networks ~ 220V is not more than 0.2 s, ~ 380V - 0.05 s.
The basic potential equalization system interconnects the following conductive parts:
- PEN- conductor supply line;
- grounding conductor;
- metal pipes of communications entering the building;
- metal parts of the building frame;
- grounding device of the lightning protection system.
The conductors of the main potential equalization system are made with wire PV1 1x25 mm.
In the shower ABK and the checkpoint, the system of additional equalization of potentials is performed. In these rooms, additional potential equalization bushes (HVAC) are installed, which are connected to the RE-bus of the distribution panel with wire ПV1 1х4 mm. Metal inserts on pipelines for cold and hot water supply, metal sinks are connected to SHDUP with wire PV1 1x4 mm.
In the buildings of adaptation, pregnant queen, hryachnik, queen, rearing, a system of additional equalization of potentials is performed, connecting all open and third-party conductive parts that can be simultaneously touched (heating, water mains, metal stalls). The system of additional equalization of potentials is performed with a wire PV1 1x4 mm, laid from the PE-bus of the distribution boards.
PROJECT DOCUMENTATION OF EM POWER SUPPLY
The project provides for equipping buildings of a pig-breeding complex with a lightning protection system. Level of protection adopted III , the reliability of protection - 0.9. To protect against direct lightning strikes, the project provides for an external MZS consisting of an air terminal, down-conductor and grounding conductor. The lightning protection net made of galvanized steel wire d = 8 mm is used as the lightning receiver . The down conductors are made of galvanized steel wire d = 8 mm. The earthing switch is made of a steel strip of 5x40 mm and a corner of steel 63x63x6 mm. The MZS is included in the general system of equalization of building potentials, thus achieving protection from secondary effects of lightning.
l) Information about the type, class of wires and light fittings to be used in the construction of a capital construction object.
Electrical wiring in the buildings of the pig-breeding complex was made with a cable VVGng in accordance with the requirements of the ПУЭ. Networks are designed for long-term permissible load, tested for voltage loss, protected from short-circuit currents and overloads. The lighting equipment is selected in accordance with SNiP 23.05-95 and corresponds to the category of premises.
m) Description of the system of working and emergency lighting.
The project provides for working and emergency lighting in rooms where animals are kept. In the administrative and amenity building, the entrance hall and the gallery, working and emergency lighting is provided. For lighting used lamps with fluorescent lamps manufactured by the company "Lighting Technologies". Lighting is controlled by switches installed in place. Light sources are powered by a phase voltage of ~ 220V.
m) Description of additional and backup sources of electricity.
As a backup power source, the project provides for a diesel generator set (DGU) of the P440E1 440 kVA type hull design. DGU is installed next to the KTP 400 kVA. DGU grounding is made of steel strip 5x40 mm, attached to the ground loop of the transformer substation, R C <4 Ohms.
o) List of measures for the reservation of electricity.
In the case of the disappearance of the voltage on the main input, an automatic switch to the power supply from the diesel generator set takes place.