SYJ 33-1988 Design regulations for power distribution in oil fields and long-distance crude oil pipelines
Some standard content:
Ministry of Energy of the People's Republic of China Petroleum Industry Standard Design Regulations for Transformer and Distribution of Oil Fields and Long-distance Crude Oil Pipelines SYJ 3388
(Trial)
Editor: Daqing Petroleum Survey and Design Institute, Petroleum Planning and Design Institute of China National Petroleum Corporation
Pipeline Survey and Design Institute
Approval Department: China National Petroleum Corporation Trial Implementation Month: October 1, 1989
Petroleum Industry Press
1989·Beijing
Chapter 2
Section 1
Section 2
Chapter 3
Section 1
Section 2
Section 3
Section 4
Chapter 4
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Chapter 5
Chapter 6
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Electric load classification and power supply requirementswwW.bzxz.Net
Load classification
Power supply requirements
Transformer and distribution system
General provisions
Power supply and distribution voltage and voltage deviation
Wiring of transformer and distribution system
Reactive power compensation
Transformer and distribution station
General provisions
Site selection of transformer and distribution station
Main wiring and transformer selection
Equipment selection
Power supply used and operating power supply
Transformer and distribution equipment
Load calculation
Power and lighting
——General provisions
Selection of low-voltage electrical appliances
Conductor selection
Protection of low-voltage distribution lines and motors
Cable laying
Power and shade wiring methods
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Appendix - Some provisions for overhead lines of 35kV and belowAppendix II
Appendix III
Appendix IV| |tt||Appendix 5
Various correction systems for correcting the current carrying capacity of wires and cables according to the laying conditions
Selection of arm diameter of insulated conductor
Common terms and definitions
Explanation of terms used in this regulation
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Document of China National Petroleum Corporation
(89) Zhongshanshezi No. 230
Notice on the promulgation of the "Regulations on the Design of Transformers and Distribution Systems for Oilfields and Long-distance Crude Oil Pipelines (Trial)" as the petroleum industry standard of the Ministry of Energy All petroleum management (exploration) bureaus, pipeline bureaus, and geophysical exploration bureaus hereby approve the "Regulations on the Design of Transformers and Distribution Systems for Oilfields and Long-distance Crude Oil Pipelines (Trial)" as the petroleum industry standard of the Ministry of Energy. The number is SYJ33-88. It will be implemented on a trial basis from October 1, 1989.
This standard is managed and interpreted by the China National Petroleum Planning and Design Institute. China National Petroleum Corporation
March 22, 1989
Preparation Instructions
This standard is prepared in accordance with the Ministry of Petroleum Industry (86) Petroleum Science No. 53.
During the preparation process, a relatively extensive investigation and research was conducted: the design and production experience of oil fields and long-distance pipelines over the years was summarized: the opinions of the relevant design, production, management and other departments of various oil fields were solicited. The main issues were discussed many times. Finally, the China National Petroleum Planning and Design Institute organized relevant units to review and finalize the draft. During the trial implementation, if any modification or supplement is found, please provide us with your opinions and relevant information for reference in future modifications. Petroleum Planning and Design Institute
December 1988
Chapter 1 General Provisions
Article 1.0.1 These regulations are formulated to unify the design standards for power distribution in oil fields and long-distance crude oil pipelines, improve the design level, and improve the quality of power supply: to ensure the safety of personnel and equipment, reliable power supply, advanced technology, economic rationality, and convenient operation and maintenance. Article 1.0.2 These regulations apply to the design of new or expanded power distribution of 35KV and below in oilfield oil, gas, water, light oil and long-distance crude oil pipeline engineering stations, and can be used as a reference for reconstruction projects.
Article 1.0.3 In addition to implementing these regulations, the power distribution design of oil fields and long-distance crude oil pipelines shall also comply with the current national standards and relevant professional standards. Article 1.0.4 When the project is constructed in phases, the rationality of the phased construction of the power distribution system should be considered.
Chapter 2
Electric Load Classification and Power Supply Requirements
Section 1 Load Classification
Article 2.1.1 Electric loads shall be divided into three levels according to their importance in the production process of oil fields and long-distance crude oil pipelines and the losses and impacts caused by power outages.
I. Level 1 loads:
1. Power outages will cause personal injury or death; 2. Power outages will cause significant economic losses. For example: causing crude oil pipelines to stop for a long time; disrupting the normal production process of the main production equipment of the oil field, which is difficult to recover in a short time, resulting in a large reduction in production.
II. Level 2 loads:
Power outages cause significant economic losses and a large reduction in production: disrupting the continuous production process of production equipment, and requiring a long time to recover, resulting in a large reduction in crude oil and natural gas production.
III. Level 3 loads:
Other power loads that do not belong to the sub-level and level 2 loads. Article 2.1.2 According to the production characteristics of oil fields and long-distance crude oil pipelines, in accordance with the nature of the load and the different requirements of various stations and fields for power supply reliability, the power load (based on stations and fields) is divided into three levels. Examples are as follows: 1. Oil fields:
1. Centralized oil and gas processing stations, mine oil depots (pipeline transportation), external transmission gas compression stations, light hydrocarbon general depots and rows of mechanical oil production wells are powered by level 2 loads: 2. Mine oil depots (railway transportation), oil transfer stations, crude oil dehydration stations, water injection stations, natural gas booster stations, gas gathering and compression stations, injection stations, sewage treatment stations, main water sources in oil fields, water source purification stations, water source pressure pumping stations, water wells, industrial boiler rooms, etc. are powered by level 2 loads;
3. Self-flowing oil and gas wells, remote and isolated mechanical oil wells, metering stations, water distribution rooms, etc. are powered by level 3 loads.
2. Pipeline:
1. The first station and the last station (including the distribution station) of the long-distance crude oil pipeline, the intermediate heat station that cannot be pressure-crossed, the monitoring center with high automation level, and the independent communication station are the power supply for the first-level load:
2. The intermediate heat pump station and heating station that can be pressure-crossed are the power supply for the second-level load. Section 2 Power Supply Requirements
Article 2.2.1 Power Supply Requirements for First-level Load Stations and Fields:..., the first-level load station and field should use dual power supplies and dual transformers for power supply. When conditions permit, the two power supplies should be! Substations or power plants with low verticality: Second, power supply capacity: When one power supply fails, the other power supply should meet the power consumption of the first and second loads of the production device (or unit): When the project is constructed in phases: Consider the reserved power supply capacity: The power supply capacity of the power distribution system should be compatible with the reserved capacity;
Third, according to the needs of power supply, the substation and distribution station can be equipped with a backup power supply automatic input device;
Fourth, for loads with strict power supply requirements, such as electronic computers or process control with a high level of automation, data transmission of long-distance crude oil pipelines, etc., an uninterruptible power supply device should be installed.
Article 2.2.2 The oil well drainage line of the row of mechanical wells should be powered by a two-circuit (or ring) single transformer, and the line must be equipped with an automatic reclosing device. When conditions permit, the port should be automatically started in batches to minimize the power outage rate of the line. Note: Single transformer refers to a transformer that supplies power to a single well or multiple wells. Article 22 Power supply requirements for secondary load stations and yards. Stations and yards that supply power to secondary loads should adopt dual-circuit power supply, and should try to draw from different busbar sections; when it is really difficult to use dual-circuit power supply and there are other power outage safety measures in the process, a dedicated overhead line can be used for power supply: - 3-
Second, when the transformer and distribution in the secondary load station and yard are technically and economically reasonable, a white dynamic input device can also be used.
Article 2.2.4 For stations and yards that are mainly driven by industrial steam turbines, diesel engines or gas turbines, a dedicated overhead line can be used for power supply. The power-free area can also be powered by a controllable internal combustion engine generator.
Chapter 3
Power Transformation and Distribution System
Section 1 General Provisions
Article 3.1.1 The power transformation and distribution system shall be designed in accordance with the principles determined by the overall oilfield planning. Article 3.1.2 The design of the power transformation and distribution system shall strive to simplify the wiring and reduce power loss. When conditions permit: 35kV shall be deep into the load center. Article 3.1.The capacity of the 3 newly built 35kV and below substations shall be determined according to the load development of the station and yard in 5 to 10 years and can be built in stages; the cross section of the transmission line shall be selected according to the final capacity of the 35kV substation of the station and yard.
Article 3.1.4 The design of 35kV and below overhead lines shall comply with the provisions of the "Design Specifications for Industrial and Civil 35kV and Below Overhead Power Lines" (GBJ6183). According to the characteristics of the field and the situation of the lines in the sea, geology and climatic areas, some regulations are made, see Appendix 1
Section 2 Power Supply and Distribution Voltage and Voltage Deviation
Article 3.2.1 Power supply voltage, generally use 35kV and above power supply voltage: Distribution voltage:
, High voltage: Newly developed oil fields and crude oil long-distance pipeline stations are preferred to use loky
2. Low voltage: 380V for power load and 220V for lighting: For the pumping motor, 660V is suitable for newly built oil fields. For the lighting and automatic control instruments of the well site, a 660/220V transformer is separately set up for power supply. Article 3.2.2 The terminal voltage of the electrical equipment should not exceed the following allowable deviation range according to its rated voltage
1. Motor:
In normal operation, it is generally 5%; in special cases (such as pumping motors), it is +5%~-10%.
2. Lighting:
1. Indoor lighting for general work places: ±5%; 2. Indoor lighting with high visual requirements: +5% to -2.5%; 3. Lighting for open-air work areas (such as open-air installation areas, oil tank areas, etc.): ± 5%;
4. Accident lighting, road lighting and security lighting: +5% to -10%. 3. Other electrical equipment:
When there is no special provision: ±5%.
Article 3.2.3 In order to improve the voltage quality, the design should meet the following requirements: 1. Correctly select the transformer ratio and voltage tap; 2. Make the three-phase load balanced as much as possible.
Section 3 Transformer and Distribution System Wiring
Article 3.3.1 The 35kV power supply system in the oil field should adopt a ring power supply. In the early stage of oil field development, a double-circuit line power supply method can also be used, and considering the characteristics of the increasing unit consumption of oil and the gradual expansion of the mining area, the design considers the conditions for developing a ring power supply.
Article 3.3.2 The wiring regulations for 6kV and 10kV distribution lines in oilfield wells are as follows:
1. For continuous self-spraying oil wells, tree-type wiring should be adopted: 2. For rows of mechanical oil production wells, tree-type wiring with double-sided (or ring) power supply should be adopted, and disconnection points should be set at branches; when the line length exceeds 2km, disconnection points should be set at appropriate locations.
Article 3.3.3 The station should adopt a distribution system combining radial and trunk types:
-, when there is only a primary load, the radial type should be adopted; 2. When there is a secondary load, the radial type should be adopted; when the load capacity is small and the path is smooth, the tree type can also be adopted;
3. When there is only a third-level load, the trunk type can be adopted. Article 3.3.4 In the 380V, 220V neutral point true grounding network, the single-phase 220V load should be distributed as evenly as possible on the three phases. The neutral line current of the three-phase transformer with the connection group of Y/Yo-12 shall not exceed 25% of the rated current of the low-voltage winding, and the current in one phase shall not exceed the rated current value when fully loaded. Article 3.3.5 The same-name electrical equipment of the first and second level loads in each production device (or unit) should be distributed by different busbars or lines. Section 4 Reactive Power Compensation
Article 3.4.1 The power factor of 3KV substations and 6kV and 10kV distribution stations with separate metering for local power supply should reach above 0.9. Article 3.4.2 The capacity of power supply and distribution equipment and power equipment should be correctly selected in the design: improve the natural power factor
Article 3.4.3 For large-capacity motors, synchronous motors should be selected when the process conditions allow and it is economically reasonable
Article 3.4.4 Parallel capacitor compensation method and installation location: 1. For oil pumping motors with a capacity of 17kW or more, low-voltage capacitors should be installed locally to disperse reactive power compensation. The capacitor should be installed in the power distribution control box of the oil pumping unit, and share a set of control and protection equipment with the oil pumping unit. The compensation capacity is equal to the power factor when no load is equal to! For the purpose of publicity,
2. 35kV substation: capacitors should be installed on the 6kV and 10kV sides for centralized compensation. For devices (or units) with relatively concentrated low-voltage loads and relatively far away from the transformer and distribution station where reactive power compensation is installed, capacitors should be installed in their distribution rooms for centralized compensation (such as oil transfer stations, oil depots, water source rooms, etc.). Low-voltage capacitor cabinets can be installed in parallel with distribution panels.
3. For high-voltage distribution stations that are far away from 35kV substations and have heavy loads, technical comparisons must be made to determine whether capacitors are suitable for installation. Article 3.4.5 Each 6kV and 10kV parallel capacitor should be equipped with a dedicated fuse as the main protection, and the fuse current should be 1.5 to 2.0 times the rated current of a single capacitor.4. Parallel capacitor compensation methods and installation locations: 1. For oil pumping motors with a capacity of more than 17kW, it is advisable to install low-voltage capacitors on site for decentralized reactive power compensation. The capacitor should be installed in the power distribution control box of the oil pumping unit, and share a set of control and protection equipment with the oil pumping unit. The compensation capacity is equal to the number of reactive power when no load! 2. 35kV substation: capacitors should be installed on the 6kV and 10kV sides for centralized compensation. For devices (or units) with relatively concentrated low-voltage loads and relatively far away from the transformer and substation where reactive power compensation is installed, capacitors should be installed in their distribution rooms for centralized compensation (such as oil transfer stations, oil depots, water source rooms, etc.). Low-voltage capacitor cabinets can be installed in parallel with distribution panels. 3. High-voltage substations that are far away from 35kV substations and have large loads must be compared by technology to determine whether capacitors are installed. Article 3.4.5 Each 6kV and 10kV parallel capacitor should be equipped with a dedicated fuse as the main protection, and the fuse current should be selected to be 1.5 to 2.0 times the rated current of a single capacitor.4. Parallel capacitor compensation methods and installation locations: 1. For oil pumping motors with a capacity of more than 17kW, it is advisable to install low-voltage capacitors on site for decentralized reactive power compensation. The capacitor should be installed in the power distribution control box of the oil pumping unit, and share a set of control and protection equipment with the oil pumping unit. The compensation capacity is equal to the number of reactive power when no load! 2. 35kV substation: capacitors should be installed on the 6kV and 10kV sides for centralized compensation. For devices (or units) with relatively concentrated low-voltage loads and relatively far away from the transformer and substation where reactive power compensation is installed, capacitors should be installed in their distribution rooms for centralized compensation (such as oil transfer stations, oil depots, water source rooms, etc.). Low-voltage capacitor cabinets can be installed in parallel with distribution panels. 3. High-voltage substations that are far away from 35kV substations and have large loads must be compared by technology to determine whether capacitors are installed. Article 3.4.5 Each 6kV and 10kV parallel capacitor should be equipped with a dedicated fuse as the main protection, and the fuse current should be selected to be 1.5 to 2.0 times the rated current of a single capacitor.
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