Complete transformer substations (abbr. KTP) for outdoor installation are used to receive electrical energy three-phase alternating current with a frequency of 50 Hz, voltage 6 or 10 kV, converting it into electricity with a voltage of 0.4 kV, supplying it to consumers.
The transformer substation is manufactured in accordance with TU 3412 and is used for power supply to industrial, agricultural and municipal facilities in areas with a moderate-cold climate (UCC) and a temperate climate (U), with 1 category of location according to GOST 15150.
Price: from 80,000 rub. with VAT (The cost of transformers is not taken into account)
Before ordering a substation, the customer fills out a questionnaire or sends design data so that we can prepare the best proposal for the production of the substation, both in terms of color, design, and the equipment used in the package transformer substation.
X KTP X X/X 25..2500/6(10)/0.4 X
Types of transformer substations
Dead-end complete transformer substations have a connection to only one high-voltage transmission line. Pass-through - connect to two electrical lines.
A kiosk-type transformer substation is one of the most common types of package transformer substation. The housing of such a substation is assembled from strong metal. They have good safety indicators and excellent protection from environmental influences.
Outdoor installations are insulated substations. The body is covered with special panels called “sandwich”. They give the substation good protection under severe climate conditions and are equipped with ShchO-70 panels and KSO cameras. These substations are widely used in the northern regions of the Russian Federation.
Block complete transformer substation - the housing is made of concrete blocks. The concrete building consists of an underground and above-ground block.
Complete in-shop transformer substation is intended for installation exclusively in enclosed spaces and is not suitable for work in an open environment. Our plant manufactures KTP-VC of various types to suit specific customer needs and budgets.
Mast transformer substations are used to supply electrical energy to a certain agricultural facility; these transformer substations have an open design.
Pole substations must be installed on special power transmission line support poles.
Device
Complete transformer substations KTP is a prefabricated welded frame structure made of metal or covered with insulated “Sandwich” panels.
The product consists of the following main compartments:
- High voltage device (HVD) compartment
- transformer compartment.
- low voltage switchgear compartment (LVSG)
The transformer substation is designed with air or cable input/output, both on the high and low voltage side. Products with air input/output additionally include an air input box (tower) for connecting air lines.
The following is established in the RUVN:
- High voltage fuses;
- Disconnectors;
- Load switches;
- KSO-203 with vacuum circuit breaker BB-6(10), provided that the transformer power is from 1000 to 2500 kVA;
- KSO-393 with disconnector RVZ-6(10) provided that the transformer power is from 25 to 160 kVA;
- KSO-393 with load switch VNA-6(10) provided that the transformer power is from 250 to 630 kVA;
The output of the power busbars or cable of the RUVN to the inputs of the power transformer is made through bushings or insulating plates located between the TO and the RUVN. The entire design of the TO should make it possible to install a power transformer with a power from 25 to 4000 kVA. All RUVN and maintenance compartments have doors, gates, with blinds built into them, making it possible to ventilate the room in summer. It is possible, according to certain standards, to make doors in a different design.
For security human life and unauthorized access to the interior of the maintenance facility by unauthorized people, when the disconnectors and load switches are turned on; it has wooden barriers installed on the vertical door posts in special eyes.
RUNN
- complete low-voltage devices of the ShchO-70 series TU 3414-001-365711427-2010;
- automatic switches for input and output connections;
- power switches;
- current transformers;
- a cabinet where the heating system and electricity meters are installed;
- For a two-transformer KTPN, a protection and automatic switching cabinet is installed.
Through the insulating plate and seals located between the TO and RUNN, cables and power busbars are inserted into the RUNN from the terminals of the power transformer. To remove outgoing cables, holes are made in the floor of the RUNN for their exit. According to the existing PTS diagram, holes are made in the floor. Close the holes with rubber seals. The design of the RUNN makes it possible to connect to a 0.4 kV overhead line and to a cable line.
With the help of bolts, a high input chamber and a high input portal are attached to the roof in order to connect it to the 6-10 kV overhead line above the RUNN or RUVN compartment on the roof. To ensure that the protection meets the standards, a rubber seal is installed at the joints.
Air entry equipment
- support insulators;
- bushing insulators;
- pin insulators;
- surge suppressors.
RUVN and RUNN in KTP, according to current standards, must withstand certain number on and off without breakdowns. The design of the PTS must ensure accurate operation of metering, measuring, control, and signaling devices during operation of the devices installed in it. Without dismantling the RUNN it is possible to replace the power transformer. All bolted and dismountable connections assembly units KTP are equipped with devices that prevent spontaneous unscrewing during equipment operation.
PTS are supplied fully assembled or in the form of blocks that can be assembled on site and inside which all the switching devices are already located. KTP have bushings of categories A and B according to GOST 9920; these are air bushings with overvoltage limiters on the LV and HV sides.
The external doors of the transformer substations are equipped with additional locks to prevent anyone from getting inside without permission. The substation locks have different secrets and are able to withstand more than 1000 closings and openings.
To illuminate panels with measuring instruments and device control handles, these panels have inside stationary light sources with a voltage of no more than 42 V, and also have a socket for a portable lamp. In RUNN everything is provided for the installation of portable grounding in accordance with GOST 21130.
Using heating elements in RUNN KTP UHL1 and RUVN, air heating is provided for normal operation of the built-in equipment. Turning off and on all heating devices can be done automatically or, if desired, manually.
Without removing the voltage from the main circuits of the package substation, installation of devices and devices of auxiliary circuits is provided.
It is possible to monitor the condition of the switchgear with high-voltage fuses. They have operation indicators without removing voltage from the main circuits.
UVN blocking
- blocking of grounding knives and main knives, preventing two knives from being in working condition at the same time, preventing the switching on of the grounding knives when the main knives are switched on, or preventing the switching on of the main knives when the grounding knives are switched on;
- a blocking that prevents the disconnector from being turned off when the load is on, when they want to turn off the switch through a high voltage source;
- an interlock that prevents the door to the KSO in the RUVN from opening when there is voltage on the buses of the main KSO and does not allow the load switch to be turned on when the KSO door is open;
Note. At the request of the customer, other locks can be performed,
Equipment
- RUVN according to the questionnaire;
- Power transformer;
- RUNN according to the questionnaire;
- busbars provided for by the KTPN design;
- for package transformer substations with air input/output, air input box KVV;
- installation materials;
- according to the spare parts and accessories list, spare parts;
- additional equipment according to the questionnaire, for installation in the BMZ;
Busbar transformer in a transformer substation
Documentation
- operational documentation for transformers in accordance with GOST 11677 – 1 copy.
- operational documentation for equipment and components;
- electrical connection diagrams and electrical circuit diagrams - 1 copy;
- assembly drawing - 1 copy;
- list of operational documents - 1 copy;
- Operating manual - 1 copy;
- passport for KTP - 1 copy;
Note. If the package transformer substations contain the same type of products and components, then the operational documentation in one copy is attached to them.
Requirements for resistance to external influences
Since the operation of PTS occurs at any time of the year and day in the open air, they must be resistant to the environment:
- air from minus 45 to plus 40 °C for version U1;
- air from minus 60 to plus 40 °C for version UHL1;
- no more than 1000 m altitude above sea level;
- at a temperature of plus 15 °C humidity 75%;
- from 86.6 to 106.7 kPa atmospheric pressure;
- GOST 15150 - II (industrial) type of atmosphere;
- non-explosive environment, without explosive dust, without gas-aggressive vapors, in concentrations capable of destroying insulation, metal;
- up to 9 points on the M5K-64 scale, resistance to seismic effects according to GOST 17516.1.
Main characteristics
| Parameter name | Parameter value | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Power transformer power, kVA | 25; 40; 63; 100 | 160; 250; 400; 630; 1000; 1250; 1600;2000; 2500 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Rated voltage on the high voltage side (HV), kV | 6; 10 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Highest operating voltage on the HV side, kV | 7,2; 12 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Rated voltage on the low voltage side (LV), kV | 0,23; 0,4; 0,69 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Rated current of the main circuits on the HV side (6/10 kV), A | 2,4/1,4; 3,9/2,3; 6,1/3,6; 9,6/5,7 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Rated current of the main circuits on the LV side, A | 36,1; 57,7; 91; 144,5 | 15,4/9; 4,1/14,5; 38,1/23; 60,7/36,4; 96,4/57,8; 120,4/72,6; 154,1/92,5; 192,7/115,6; 240,8/144,5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Electrodynamic resistance current on the HV side, kA | 16 | 231; 361; 578; 910; 1445; 1806; 2312; 2890; 3612 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Thermal resistance current for 1 s on the HV side, kA | 6,3 | 32 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Electrodynamic resistance current on the LV side, kA | 8 | 12,5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Thermal resistance current for 1 s on the LV side, kA | 3,2 | 41 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| AC frequency of main circuits, Hz | 50±1.25 | 16 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| AC frequency of auxiliary circuits, Hz | 50±1.25 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Insulation level according to GOST 1516.3: With dry transformer With oil transformer TMG |
Lightweight Normal level "b" |
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The normal operation of the KTPN is determined by the organization of installation work prescribed by special standards. The manufacturer has the opportunity to deliver the device to the site of operation either block-by-block or completely assembled. On the front side there is an assembly diagram.
KTPM - mast
KTP substation connection diagrams can be radial or main. Radial, connected according to the block - power line - electric transformer circuit, are connected tightly. At the main line, an UVN shield is additionally installed. Connecting several package transformer substations to one line is possible with their power of 1000-1200 kVA.
|
Parameter name |
Meaning |
|
Power transformer power. kVA |
25; 40; 63; 100; 160; 250; 400; 630; 1000; 1250; 1600 |
|
Rated voltage on the HV side, kV |
6;10;20 |
|
Rated voltage on the LV side, kV | |
|
Rated current of busbars on the HV side, A | |
|
Rated current of busbars on the LV side, A |
1250;1600;2500;3200 |
|
Thermal resistance current of busbars on the HV side, kA/1s |
16;20 |
|
Climatic performance according to GOST 15150 |
U1 (at ambient temperatures below -25°C, BKTP are manufactured in a northern version) |
|
Degree of protection according to GOST 14254 |
IP23 |
|
Seismicity of the construction area, points on the MSK-64 scale |
Up to 9 |
|
Altitude above sea level, m |
Up to 3000 |
|
Service life, years |
At least 25 |
2BKTP modules can be arranged either “sequentially” - joining along the width of the block, or “parallel” - joining along the length of the block. The latter relative arrangement is the most common.
M - mass with installed equipment, without transformer, S - perimeter area,
H internal - internal height of the element.
DESIGN CHARACTERISTICS OF BKTP
|
Element |
Dimensions, mm (WxDxH) |
M, t |
S.m2 |
Internal, mm |
|
Dimensions of one TP block |
2460x4640x2700 |
12.7 |
11,5 |
2175 |
|
2460x4640x3050 |
13.5 |
11,5 |
2475 |
|
|
2460x5340x3050 |
13.1 |
2475 |
||
|
Dimensions of the volumetric pit (underground part of the transformer substation) |
2380x4560x885 |
11.0 | ||
|
2380x4560x1500 |
11.0 |
1415 |
||
|
2380x5260x1500 |
12.5 |
1415 |
Equipment of serial BKTP.
High voltage switchgear (RU-VN).
Small switchgear switchgear type R.M. -6 with gas insulation (produced by EZOIS under license Schneider Electric).
At the customer's request, SF6 monoblocks of other types (manufactured by ABB, Siemens ). It is also possible to perform RU-VN based on KSO cells Russian manufacturers. The possibility of using cells of the proposed type must be agreed with EZOIS. Available own production equipment 6-10 kVA.
Power transformer.
BKTP standard designs are equipped with power transformers ( 25; 40; 63; 100; 160; 250; 400; 630; 1000; 1250; 1600) with oil-cooled sealed type (TMG) from various manufacturers. At the customer's request, cast resin transformers of various types and manufacturers can also be used.
Low voltage switchgear (RU-LV).
BCTS are made using 0.4 kV switchgear of various designs (racks, panels, cabinets) with switching and protective devices of various types (load switches, fuses, circuit breakers) and from different manufacturers. We have our own production of 0.4 kVA equipment.
Automatic transfer system (ATS).
To ensure the required degree of reliability of power supply to consumers, package transformer substations produced by the plant can be equipped with devices for automatically switching on backup power.
ATS in standard package transformer substations can be carried out on the HV side (AVR-VN) or on the LV side (AVR-LV). In both options, the AVR circuit operates in the following emergency situations:
· violation of the phase sequence;
· loss of voltage on one, two or three phases (decrease below the permissible level (0.7*Unom) on any of the phases or on all three).
Scheme with AVR-VN is implemented by equipping the drives of the RU-VN switching devices with geared motors and contacts for signaling the position of the devices. The switching control is carried out by an automation cabinet, which monitors the presence of voltage on the LV side.
Scheme with AVR-NN implemented either on contactors or on motor-driven circuit breakers. The AVR-NN device is a set of two identical panels (cabinets), each of which is installed in the room of the corresponding section (circuit beam) of the package substation. AVR-NN can be built into RU-NN when automatic switches are used as input and sectional devices.
Reactive power compensation devices (RPC).
Depending on the design parameters of the operating mode of the low voltage distribution network, transformer substations can be equipped with reactive power compensation devices.
UKRM can be either the type specified by the project or selected according to design parameters (power, number of control stages). Structurally, the UKRM can be made as a separate device or be built into the RU-NN.
If the substation contains UKRM, the layout of the package transformer substation may differ from the standard one and is developed individually.
System of own needs (lighting, heating, heating of equipment).
The auxiliary system (SN) provides power for lighting and space heating, ventilation systems, forced heat removal (if available), and equipment heating. The auxiliary circuit provides manual or automatic power backup in the presence of two sources (in two-transformer transformer substations). If the balance of the premises is different (of the power supply company and the subscriber), the circuit allows for independent switching on of power to its parts.
Lighting system substations includes equipment for working and emergency lighting (lamps, batteries, automation devices) of the unit, as well as equipment for lighting the pit (typically - sockets for connecting a portable lamp).
Heating of KTP blocks is carried out due to the heat generated by the power transformer. For the northern version (or at the customer’s request), electric heaters with a control device (regulator with air temperature sensor) are installed in the RU-NN and RU-VN rooms. Anti-condensation heating of equipment (compartments of relay protection and automation equipment RU-VN, gearmotors of drives of switching devices) is provided regardless of the regional design of the package substation.
Electricity measurements and metering.
Measurement electrical quantities (current and voltage) in serial PTS are carried out on the low voltage side, at the input to the RU-NN. Measuring instruments are located in the auxiliary power supply cabinet (YASN or ShPSN). It is also possible to place measuring instruments in RU-NN. At the customer's request, various types of measuring instruments can be used.
Electricity metering also carried out on the low voltage side. If necessary, electricity metering can be performed both at the input and output lines of the RU-NN. In addition, RU-NN can be manufactured with preparation for metering electricity on outgoing lines (with wiring for metering circuits, but without installing current transformers).
Alarm systems.
At the customer's request, the KTP can be equipped with security and fire alarm systems. They are carried out according to standard projects and include a full set of equipment (sensors, control equipment and warning devices).
Telemechanics system.
The equipment of the transformer substation can be prepared in preparation for equipping it with a telemechanics system. To carry out telemetering, telesignaling and telecontrol in this case, standard package transformer equipment is equipped with additional options:
· contacts for signaling the position of switching devices RU-VN and RU-NN;
· contacts for signaling the position of switching devices of the MV system;
· gearmotors and releases for remote control devices;
· sensors of electrical quantities (current and voltage transformers).
In addition, fire and security alarm systems are designed with the ability to transmit signals to the telemechanics system.
At the customer's request, the list of signals transmitted to the telemechanics system and functions for remote control of equipment can be expanded in accordance with the provided project.
The telemechanics system can be supplied as a complete set with the package transformer substation, or purchased separately and installed by the customer independently at the site.
BKTP sales at the best price are carried out through all over Russia.
In Moscow, you can find out the price of buying a BKTP at the head office at:
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