Is there any regulation on how far the 110KV system is from the railway?

The safety distance of the 110KV system to the railway. 4. The height that should be maintained when the power line crosses the railway. When the power line crosses the non-electric traction section of the railway, the distance from the maximum sag of the conductor to the top surface of the rail: 1.500kV line, no less than 14000mm ； 2.330kV line, no less than 9500mm ； 3.220kV line, no less than 8500mm ； 4. For lines of 110kV and below, the length shall not be less than 7500mm. 5. Regulations on the distance from the pole to the center of the line When the power line crosses or is parallel to the railway, the horizontal distance from the inner edge of the pole to the center of the line: 1. For low-voltage lines of 380V and below, new lines shall be no less than 3000mm, and existing lines shall be no less than 2450mm, and shall be gradually transformed. ； 2.10(6)kV high voltage line, no less than 3000mm ； For high-voltage lines of 3.35kV and above, the height shall not be less than the pole height plus 3000mm. 6. Regulations on the vertical distance between overhead lines and catenary lines When overhead power lines (including communication lines) cross the catenary network, the vertical distance from the catenary line must be: Electrical lines of 110kV and below, not less than 3000mm ； 220kV power line, not less than 4000mm ； 330kV power lines, not less than 5000mm ； 500kV power line, no less than 6000mm. To prevent mutual electromagnetic interference and ensure the safety of contact grids and overhead power lines. In order to prevent low-voltage lines from crossing high-voltage lines and facilitate equipment maintenance and management, electric lines of 10kV and below should be run underground through the railway as much as possible.

Railway power supply regulations 1. Definition of power supply and traction power supply for electrified railways The power supply system of electrified railways is a centralized power supply provided by power plants, which is transmitted to the traction substation through high-voltage transmission lines (110kV) through substations and converted into voltage 2* * kV or 55kV is sent to the contact line to supply electric locomotives running along the line. The so-called traction power supply refers to the power supply from the power system starting from the railway traction substation to the traction contact network. 2. Requirements that traction power supply equipment should meet With the rapid development of electrified railways, the "Technical Regulations" have put forward higher requirements for traction power supply equipment.: 1. Reliable power supply for uninterrupted driving should be ensured, and the capacity of the traction power supply equipment should match the line transportation capacity, leaving room for ； 2. In order to meet the specified train weight, density and speed requirements, the maximum operating voltage of the catenary is 2 * * kV, the maximum instantaneous value is 29kV ； The minimum working voltage is 20kV, which shall not be lower than 19kV under abnormal circumstances. ； 3. Traction power transformation requires dual power supplies and dual circuit power receiving circuits. ； 4. The double-track electrified section should have conditions for driving in the opposite direction. ； 5. The segmentation of the contact network should facilitate maintenance and reduce the scope of faults and power outages. Switching stations should be installed at hubs and larger section stations. The load switches and electric isolation switches at hubs and larger section stations should be included in remote control. 7. Components of Catenary Network Generally speaking, catenary network is composed of the following three parts:: 1. Contact suspension: Including contact network wires, hanging strings, load-bearing cables, central anchors, compensation devices, etc. Electric energy is supplied to the electric locomotive through contact wires in the suspension and becomes traction force ； 2.Supported devices: Used to support and secure contact suspension. It has the form of a wrist arm, which is mainly used in intervals and switches. ； Soft crossing and hard crossing are mostly used in stations and yards. There are also various forms of support used within tunnels. 3. Pillars and foundations: It is used to bear the weight of contact suspension and support devices, etc., and fix them at the specified height, and it itself is not electrified. 8. BT power supply method and its main features BT is the English abbreviation, which means current-absorbing transformer. The BT system power supply method refers to the power supply method using a current-absorbing transformer. Its main features are: 1. The voltage supplied by the traction substation is 2 * * kV, 50% lower than the AT power supply voltage ； 2.The distance between BT substations is 30~40km ； 3. Suction transformers and return lines can reduce interference to communications ； 4. In order to connect the current suction transformers in series, a special suction gap is provided at the disconnected contact line

9. AT power supply method and its main features AT is the English abbreviation, which means autotransformer. The AT system power supply method means that the main transformer equipment for power supply in the contact network is an autotransformer. Its main features are: 1. The voltage supplied by the traction substation is 55kV, which is 100% higher than the traction voltage, so it is suitable for supplying large-capacity loads. ； 2. Due to the high power supply voltage, the power transmission distance is longer than other methods. The average distance between each traction substation is 80~90km. ； 3. The AT system is equipped with a positive feeder and a protection line, and they are installed on both sides of the contact pillar on the same pole as the contact conductor, which can reduce interference to the communication line. ； 4. There is no need to disconnect the wires and set up a suction gap on the catenary wires. 10. Definition of cross-region power supply and the role of switching stations and zoning booths in the electrified railway power supply system. "Cross-region power supply" means that when a traction substation fails or is outage for maintenance, the power supply arm responsible for the power supply is closed by the switch of the zoning booth and is powered by the adjacent traction substation. Switching stations are set up in places with many traction network branches such as power locomotive depots and large marshalling yards. Its function is to separate the branch line contact network (including other lines that use power on the contact line) from the main line contact line, prevent the failure of the branch line contact line from affecting the power supply of the main line contact line, and increase the number of feeders. When the switch is located in the middle of the longer power supply arm, its function is to shorten the fault range of the traction network. The zoning booth is usually located at the end of the feeder arm, that is, between the two traction substations. Its function is that when the power supply mode of the traction network needs to be changed, it can be converted through the partition booth to connect the upstream and downstream. When necessary, cross-regional power supply can also be realized through isolating switches. 11. Segmentation insulator and its setting place. Segmentation insulator is an insulation device used when the contact network is electrically segmented. Normally, the pantograph slides through while being charged. When a certain contact network segment fails or has a power outage due to construction, open the isolation switch at the segmental insulator to cut off power to that part of the contact network, while other parts can be powered normally. like: When the two parts of the catenary system are powered separately, if there is a problem with the power supply of one part of the catenary and cannot supply power, the isolating switch can be closed to allow it to use one power supply, thereby improving the reliability and flexibility of the catenary operation. Segmented insulators are generally located at: 1. Cargo lines and lines for loading and unloading operations ； 2. Locomotive maintenance lines or lines with spare water cranes ； 3. Segmentation between different yards at the same station ； 4. Partition between upstream and downstream rows ； 5. It is difficult to use insulated anchor section joints for station main lines and section pipelines. 12. The main purpose of isolating switches in electrified railway traction power supply and matters that should be paid attention to during operation. Isolating switches are mainly located on the contact network branch lines of siding lines, cargo lines, maintenance lines, locomotive return sections of locomotive sections, etc. Its main purpose is to use it to achieve reliable isolation from the main line or the arrival and departure line of the catenary line when the catenary power outage is required for maintenance, so as to ensure the safety of operating and maintenance personnel and the normal work of the operating part. Pay attention when operating the isolating switch: 1. When opening and closing the isolating switch, an insulating rod must be used. Two people are present, one operating and one supervising. Operators and supervisors must have an isolation switch operation certificate issued by the power supply section. ； 2. Before operation, the operator must wear the specified insulating shoes and insulating gloves, conduct a simple air leakage test before use, and confirm that the switch and its transmission device are normal and the grounding wire is good before operating according to the regulations. ； 3. The operation must be accurate and rapid. Open and close once to the end, and no stops or conflicts are allowed in the middle. During operation, no part of the human body shall come into contact with the pillar and its components. When thunder and lightning comes and during thunder and lightning, it is prohibited to operate the isolating switch ； 4. When the isolating switch and its transmission device are found to be in poor condition, the station attendant should immediately ask the power dispatcher to send someone to repair it. If it endangers personal or driving safety, no operation is allowed until it is repaired, and it is strictly prohibited to climb the pillar without authorization to repair it by yourself. ； 5. Insulating shoes, insulating gloves and insulating rods should be stored in a cool, dry, dust-free container. They should be sent to the power supply section for inspection and testing by each station and section every six months, and wiped with a dry cloth after each use. 13. The method to maintain the prescribed distance between the catenary and the track surface is to maintain the prescribed distance between the catenary and the track surface. During the construction of electrified railways, the construction unit shall mark the track surface standard line designed for the catenary on the inner edge of the catenary pillar or the tunnel side wall. Before opening, the railway power supply section and the works section must jointly review and confirm, and then retest once a year. 14. Requirements for railway power supply and requirements for power supply equipment. Each railway station should have power supply. In principle, power supply should be provided through power through lines. Before the power through-line is opened and there is no local power supply nearby or the local power supply cannot meet the requirements, the railway should provide its own power station or generator set. Railway substations, power distribution stations and power lines should ensure power supply to all loads of transportation, production and workers' lives. In order to ensure uninterrupted power supply for transportation and production and meet equipment maintenance needs, the railway bureau should be equipped with generator cars and electric test cars. Railway power supply equipment should be: 1. The primary load should have two independent power supplies to ensure uninterrupted power supply. ； The secondary load should have a reliable dedicated power supply ； 2. The power receiving voltage can be 110, 35 (63), 10kV or 380/220V according to the power capacity, reliability and transmission distance. ； 3. The allowable deviation of the power supply voltage at the user's power receiving end is: ①For high-voltage power supply lines of 35kV and above, the sum of the absolute values ​​of positive and negative voltage deviations shall not exceed 10% of the rated value. ； ②Three-phase power supply lines of 10kV and below are ±7% of the rated value ； ③For 220V single-phase power supply, +7%~-10% of the rated value ； ④Automatic blocking of the secondary terminal of the signal transformer is ±10% of the rated value. Under abnormal conditions of the power system, the allowable deviation of the voltage value at the user's receiving end shall not exceed ±10% of the rated value.

The caring little doctor gave so detailed information! Learned a lot