Construction of 04 kV VL

Contents

Contents

1 Cover sheet

2 SRO certificate

5 Specifications

7 Content of the working project

9 Help

10 Working Project Passport

Explanatory Note

11 Initial data

12 General instructions

13 3. Brief description of construction facilities

15 Design climatic conditions

16 Electrical Solutions

17 Acceptance for operation of VLI

18 Organization of VLI operation

22 8. Procedure for performance of works at the existing facility

23 9. Fire Safety Measures

24 10. Occupational safety and safety in the construction of power transmission lines and electrical installation works

26 11. Environmental protection

27 12. List of regulatory and technical documentation

28 Route plan M 1:

29 List of supports to be installed

30 Grounding of reinforced concrete supports VLI-0,4kV in populated area

31 Intermediate single-chain support P

32 Anchor end single-chain support A

34 Angular anchor support of CA

35 List of works performed

36 Equipment and Material Specification

1. Source Data

The design of the overhead power transmission line with self-supporting insulated wires (hereinafter VLI) 0.4 kV SIP-2 3x70 + 1x70 was developed on the basis of an agreement with OJSC Moscow United Electric Grid Company branch of the Northern Electric Networks (hereinafter OJSC MOESK).

The initial data for the development of the project were:

- technical conditions of connection of power receiving devices to the electric network of OJSC "MOESK" Northern Electric Networks "dated 21.11.2012 8122029324 (932435/125);

- topographic survey with. Timonovo

The working documentation is developed in accordance with the PUE of the current edition. and other policy documents relating to issues under development.

As part of this project, reinforced concrete supports of VLI 0, 4kV with wire SIP-2 3x70 + 1x70 are used. The 0.4 kV VLI supports are designed on the basis of reinforced concrete posts 9.5 m long. To attach the PIS wire to the supports, it is recommended to use linear reinforcement of the following manufacturers: the French company "Nilled."

Supports are designed for use in built-up and undeveloped areas.

On all types of supports, it is possible to branch to the inlets to the buildings in one and two sides of two, four and 2x2 inlets of the PIS.

General Instructions

This project considers the connection of power receiving devices of the Customer's residential building - Moiseev O.. V. by installation of supports No. 1 No. 6, laying of wire STIP-2 3x70 + 1x70 from existing TP No. 158 on supports No. 1- No. 6

Vertical distance from VLI wires to the ground surface in populated and non-populated areas to the ground and street carriageway shall be not less than 5 m. It may be reduced in hard-to-reach terrain to 2.5 m. At crossing of the impenetrable part of streets by branches from VLI to entrances to buildings of distance from PIS to sidewalks of pedestrian walkways, it shall not be allowed to reduce the distance from Pis less than 2.5m from Pto PLI to plant.

In accordance with No. 14278tmt1 "Norms for land drainage for electrical networks with a voltage of 0.38750 kV" - the removal of a land plot for permanent use during the installation of unified and standard supports VL0.4 kV is not required.

Brief description of construction facilities

VLI 0.4kV. The construction of the designed VLI0.4 kV is provided on reinforced concrete supports according to the standard design Cipher 11.0014 "Single-chain, double-chain and transitional reinforced concrete supports of VLI 0.38 kV with SIP2A with linear reinforcement of LLC" Nilled. "

Fixation of free-standing supports in the ground is provided, as a rule, without a girder, in drilled pits with a depth of 2.2 m and a diameter of 350450 mm.

Backfilling of pits is performed by soil taken out during drilling, which is layer-by-layer compacted with bringing its density to 1.7 t/m3.

For anchor supports with small sinuses in the pit, it is recommended to use sands or special sealing mixtures.

Braces of anchor (end), angular and branching supports are installed in the ground using anchor plates at a depth of 2.2 m.

Placement of supports along the route VVI0.4 kV is performed based on the design span and taking into account the convenience of making entries into the buildings.

The power transmission line with a voltage of 0.4 kV was developed by air with self-supporting insulated wires of the STIP-2 3x70 + 1x70 grade. The bearing zero core along the entire length of the HF is used as a blind-grounded conductor.

On all types of supports applied on VI0.4 kV it is possible to:

- arrangement of required number of branches from VL main line to inputs to buildings and premises.

Linear reinforcement

VLI-0.4 kV. Supporting, tensioning, branching and connecting clamps, and other elements for PIS attachment to supports are made on the basis of linear reinforcement of Nilled LLC.

For fastening of wires of VLI0.4 highway of kV on intermediate support the set of an intermediate pendant of ES 1500 E is provided.

The brackets are attached using stainless steel band F207. Stainless steel band F207 is used for attachment of anchor and suspension brackets on VL supports. The steel belt F207 is made of corrosion resistant steel with a treated edge, increased flexibility greatly simplifies the fixation of the tape on the support using the NC20 fastener.

The wiring of the VLI line on anchor type supports is provided by means of PA 1500 anchor clamps (5070 mm ²).

The connection of the support core in the span should be made using MJPT N coupling clamps, which provide mechanical strength of at least 90% of the breaking force of the support core. No more than one connection of the load-bearing zero core in the span is allowed.

MJPT connecting clamps are used to connect the main conductive conductors with a section of 25 to 150 mm in the span and in the hinges of the supports.

To connect the grounding conductor to the zero core of PIP-2, a moisture-proof bolt separation clamp (1branching) N 640 is used.

At the beginning, on the first end support and at the end of the VLI line, according to the requirements of Chapter 2.4 of PUE 7 of the publication, PC 481 clamps are installed on the wires to connect voltage monitoring and portable earthing devices.

Sealed clamps for temporary grounding PC 481, used complete with the standard device, are installed on conductive and zero cores for the entire service life of the line.

Coupling and connecting clamps are installed without removal of insulation cover of PIS phase cores. The contact plates of the clamps have a pyramidal shape, due to this, quick electrical contact is achieved and water ingress into the wire is prevented.

Overvoltage protection, grounding

On VVI0.4 kV supports there are grounding devices designed for protection against lightning surges and re-grounding of zero wire. VLI0.4 of kV passes across the inhabited area therefore distance between them - no more than 100 m. To connect all elements of grounding electric welding with an overlap. Weld length shall be at least six diameters (circular section) or double width (rectangular section) of grounding wire. After welding, cover all welds of the grounding device with bitumen mastic.

Design climatic conditions

VL-0.4kV is located on the territory of Dmitrovsky district with natural and climatic conditions according to the duration of seasonal periods of the year, as well as according to the average annual temperature regime, air humidity in the predominant directions of wind, precipitation, fog has no special differences from the climate of other territories of the Moscow region. The area is located in temperate latitudes with a temperate continental climate, seasonality is clearly expressed (summer is warm, winter is temperate cold)

- Ambient air temperature from + 35 to 45 ° С;

-Windness 90%;

-The area by the number of thunderstorm hours in year IV (4060 hour.)

-Wind area -II;

- Area by degree of atmospheric pollution - III;

-The ice area -II.

Data accepted according to PUE current edition, SNiP 230199 *.

Electrical solutions

In accordance with the specification of OJSC MOESK for power supply of the site located at the address: M.O., Dmitrovsky ron, the construction of 0.4 kV VLI is being carried out.

During the works it is necessary to:

- install 6 reinforced concrete supports based on SV953 posts;

- to suspend SIP-2 of 3х70+1х70,193 m.

Sagging booms shall comply with installation table No.1.

Grounding of supports

Re-grounding of PENconductor on supports No. 1, 3, 6 is required. The resistance of the grounding device must be not more than 30 ohms.

Connection of the switchgear to the support must be bolted to allow measurements.

Acceptance of VLI for operation

The designed VLI shall be subjected to acceptance tests in accordance with PUE requirements. The test scope includes:

1. Selective (215% of total quantity) quality check of contact and connection valves on connections and branches of phase wires. Quality check of all connections of the PIS load-bearing core shall be performed by means of external inspection and measurement of electrical contact resistance.

Pressed connections of the zero bearing core of the PIS are married if:

-geometric dimensions (length and diameter of the pressed part) do not meet the requirements of the installation instruction for the connecting clamps;

-crivance of pressed clamp exceeds 3% of its length;

- on the surface of the connecting clamp there are cracks and traces of mechanical damages.

If the electrical resistance in the connection area is more than 20% different from the resistance in the whole core area of the same length, the contact is also broken.

2. Control of strand marking in connecting and branching clamps.

3. Measurement of insulation resistance of self-supporting insulated wire cores. It is carried out by a megaohmmeter per 1000 V between phase wires, phase wires and street lighting wires, zero wire and all wires. Resistance value must be not less than 0.5 MOhm.

4. High voltage line insulation test.

It is carried out by a megaohmmeter for 2500 V in the volume specified above in para 3, at that the value of insulation resistance is not normalized. An ILI shall be deemed to have passed the test if no insulation breakdown has occurred. After testing for removal of charging current, all WFD wires shall be briefly grounded.

5. Checking the earthing devices of the existing line to which the designed branch is made includes:

- inspection of components of grounding devices within the available limits, at that

attention is drawn to the cross section of conductors, the quality of welding and bolted

compounds; monitoring of the presence of a circuit between earthing terminals and earthing terminals

elements; measurement of grounding resistances;

- measurement of total resistance of all ground conductors of zero working wire

VLI; measurement of a single-phase short circuit current to a zero wire or

phase-zero loop impedance followed by current calculation

single-phase closure.

6. Check of self-supporting insulated wire (PIS) slewing booms and

dimensions. If a violation is detected during acceptance of the IDF into operation

If the requirements for its construction and installation are specified in paragraphs 5 and 6, then this line is not

shall be taken into operation.

List of documentation submitted during acceptance of overhead lines with self-supporting insulated wires

The list of documentation submitted during the acceptance of the ERI for operation and transferred to the customer by the contracting organization includes:

line design, corrected and agreed with the customer (as-built network diagram);

1:500 scale as-built route drawing

materials on harmonization of the VLI route;

factory test report (certificate) for PIS;

Acts on the status of PIS on drums;

certificates for linear reinforcement and supports;

concealed works inspection certificates (depth of installation of underground part of supports and struts);

insulation resistance measurement protocol; VLI protection units, line switching and protection equipment adjustment protocols (circuit breakers, fuses, zero protection relays, etc.); record of measurements of single-phase short-circuit currents at the end of the line or resistance of the phase-zero loop with indication of short-circuit currents; test report of grounding devices.

Organization of VLI operation

Operation of 0.4 kV VLI is arranged similarly to 0.4kV VLI with uninsulated wires taking into account design features of VLI. Periodic inspections, tests and repairs in accordance with the current PTE are carried out to assess the state of the WFD during operation, as well as to ensure their operability by personnel.

Inspections of HF

Inspections of VLI routes by mounters shall be carried out according to the approved schedule at least once a year. Engineering personnel carry out annual random inspections of lines or sections, as well as all lines to be overhauled this year.

The personnel performing inspection of the VLI routes shall: inspect the entire route; inspect PIS condition from ground along the whole route; inspect the points of VLI intersection with engineering communications, if necessary, determine the correspondence of dimensions to VLI; determine the correspondence of the dimensions of the IDL to the ground and arrows of the PIS sag to the design values ​ ​ in places of doubt; visually determine the condition of supports struts; identify the presence of trees on the route, the fall of which can lead to mechanical damage to the PIS; inspect the state of PIS load-bearing core attachment from ground in tension clamps on anchor-type supports and in support clamps on intermediate supports; inspect the condition of the reinforcement on the branches to the entrances to the buildings from the ground; check the connection of the lower grounding outlet of the rack with the grounding conductor at their above ground connection. Horse inspections with selective inspection are carried out if necessary. The analysis of the data obtained during the inspection is carried out by personnel by comparing with the normative parameters and the results of previous inspections, at the same time the degree of danger of defects is determined and the dates for their elimination are indicated.

Frequency of HF tests

ILI shall be tested before commissioning and during operation. The frequency of tests during operation is established: the first - one year after the lines are put into operation; subsequent - if necessary (after repair, reconstruction, connection of new loads, etc.); individual types of tests - with the following periodicity.

Preventive tests of VLI insulation with megohmmeter at voltage 2500 V are performed if necessary, but at least 1 times per 6 years. Tests are carried out after disconnection (disconnection) from the line of all consumers. Tests of insulation of PIS cores, insulation of their connections and branches from them are carried out if necessary, but at least 1 times per 6 years. Measurement of the total resistance of all ground conductors of the zero wire, as well as individual ground conductors at supports having external descents with bolted connections accessible from the ground, is carried out at least 1 times per 6 years. Measurements shall be made during periods of greatest soil drying.

Selective monitoring of the condition of grounding elements with their excavation is carried out selectively by 2% of reinforced concrete supports in places of their possible damage, in aggressive soils, in a populated area with a resistance measurement at least 1 times every 12 years. Visual check of the circuit between the earthing connectors and grounded elements is carried out annually during inspections of overhead lines with insulated wires. Measurement of single-phase short-circuit current for zero wire is carried out at change of length or section of WFD wires (or its sections), but at least 1 times per 12 years. Test results are recorded in the protocol and entered in the line passport.

Procedure for performance of works at the existing facility

All the above mentioned works shall be carried out according to a special PPR agreed with the branch of the Northern Electric Networks of OJSC MOESK. The erection organization shall ensure the necessary safety of works and reliability of power supply to disconnected consumers during the development of the PPM.

Fire Safety Measures

Fire protection measures comply with the "Instructions for designing fire protection of power plants" (RD. 15334.0-49-101-2003).

Fire safety during work by the electrical installation organization is ensured by compliance with fire safety standards, including the exception: storage of materials (paper, fabrics, packs, cotton wool, etc.) soaked or impregnated with gasoline, kerosene or other combustible substances in places not specifically provided for; fuelling of fuel tanks of internal combustion engines during engine operation, use of machines with faulty engine power supply system, as well as smoking or use of open fire near machines filled with fuel.

Fire extinguishing is provided for by visiting fire brigade.

Fire safety of VL routes is ensured by the use of non-combustible structures, automatic disconnection of short-circuit currents.

Labor and safety protection during construction of power transmission lines and electrical installation works

Labor protection and equipment in construction and operation are ensured by making all design decisions in strict accordance with SNiP 111480, the requirements of which take into account the conditions of labor safety, prevention of industrial injuries, occupational diseases, fires and explosions.

The project provides for:

• use of technically advanced equipment;

• arrangement of equipment ensuring its safe maintenance;

• execution of grounding devices of electrical installations elements with rated PUE resistance value that meets the requirements of SNiP 3.05.0685 * "Installation of electrical devices";

• application of typical structures of power transmission line supports;

• use of machines and mechanisms, the structures of which provide safe operating conditions;

- high degree of mechanization of construction and installation works;

- execution of construction and installation works in accordance with standard Job Instructions.

In order to ensure labor safety and safety, it is also necessary that construction, installation and commissioning work, operation of electrical installations is carried out in accordance with the "Safety Rules for the Operation of Electrical Installations of Consumers" M., 1987 "Safety Rules for the Construction of Power Transmission Lines and Electrical Installation" RD.34.03.28597.

The construction of sections of the lines near the existing VL shall be carried out in accordance with the safety regulations specified above, with observance of the regulated distances from the wires to the operating machines and mechanisms, their reliable grounding and other measures to ensure the safety of the work.

When installing wires near existing power lines, it is necessary to perform

measures to prevent loosening of mounted wires. If it is impossible to ensure the regulated "Safety Rules" of distances from operating mechanisms to energized electrical installations, the latter must be disconnected and grounded.

Environmental protection

When developing the project, the requirements of the "Legislation on the Protection of Nature" and the "Fundamentals of Land Legislation" of the Russian Federation are taken into account.

The designed HF is constructed for transmission and distribution of electricity at a voltage of 0.4 kV. The specified process is waste-free and is not accompanied by harmful emissions into the natural environment (both air and water).

Production noise and vibrations are absent. In this regard, air protection measures and measures to reduce production noise and vibration are not provided for in this project.

In accordance with SanPiN 2.2.4.119103 "PROTECTION OF THE POPULATION FROM THE INFLUENCE OF THE ELECTRIC FIELD...," approved by the Chief State Medical Officer of the Russian Federation on February 19, 2003 № 10, protection of the population from the influence of the electric field created by air lines of AC power transmission of industrial frequency of 0.4 and 10 kV is not required.

List of regulatory and technical documentation

1. Basic requirements for design and detailed design documentation. GOST R 21.11012009.

2. Land drainage standards for 0.4750 kV electrical networks. No. 14278tmt1.

3. Electrical devices. SNiP 3.05.0685., M., TSITP Gosstroy of the USSR, 1986.

5. GOST 12.1.03081. "Electrical safety. Protective grounding, grounding. "

6. Decree of the Government of the Russian Federation No. 87 of February 16, 2008 "On the composition of sections of design documentation and requirements to their content."

7. RD34.20.50195 Rules of technical operation of electrical stations and networks.

8. Interindustry rules on protection (safety rule) at operation of the POTR M0162001 electroinstallations (RD 15334.0-03.15000).

9. Electrical Installation Rules "(PUE - 7, current edition);