According to Article 3.4 of the "General Requirements for Electric Vehicle Charging Stations", a charging station (EVchargingstation) is composed of three or more electric vehicle charging devices (at least one off-board charger), which is used for electric vehicles. It is a place where charging can monitor the status of charging equipment during the charging process.
Nowadays, more and more people are pouring into the investment projects of the new infrastructure construction industry of charging piles. How to invest in the construction of charging stations, what are the charging station layout standards, and how to apply for the installation and installation business of the State Grid Power Supply Company It also affects the hearts of the majority of stakeholders.
strong22 strong The current situation of the network is closely combined with short-term and long-term planning to meet the requirements of charging stations for power supply, and the power grid's requirements for power quality control of charging stations. The following items should be considered when selecting the location of the charging station:
First, consider the power access point. The construction of the charging station should facilitate the acquisition of power supply, choose close to the power supply terminal, and facilitate the in and out of the power supply.
The public charging station should be constructed in a convenient place for getting in and out of the car. It is better to choose the city's secondary trunk road, not near the branch road or the intersection of the cross road. The entrance and exit of the charging station should be connected to the urban secondary road.
When there are a large number of electric power engineering repair vehicles, electric dump trucks , electric buses, etc., special charging stations should be set up.
Newly built charging stations should make full use of nearby roads, traffic, water supply and drainage, fire fighting and other municipal public facilities.
Charging stations should not be located in outdoor low-lying, water-accumulating places and places prone to secondary disasters.
Charging stations are not allowed to be installed in places with severe vibration or high temperature. They should not be installed in places with dust, water mist or corrosive gas. When they cannot be far away, they should not be installed on the leeward side of the wind direction of the pollution source.
Charging stations are not allowed to be set up directly above or below places with explosive atmospheres. When adjacent to buildings with explosion hazards, they should meet the requirements of the "Code for Design of Electrical Installations in Explosive Hazardous Environments".
Charging stations are not allowed to be located directly below bathrooms or other places where water is often accumulated. Functional houses for installing electrical equipment should not be adjacent to the above places.
The charging station shall meet the requirements of environmental protection and fire safety, and the fire separation distance between other buildings and structures shall meet the "Code for Fire Protection Design of Thermal Power Plants and Substations" and "Code for Fire Protection Design of Building Design" Related requirements.
The charging station should reserve a certain spare place.
02 Charging station layout
At least two lanes at the entrance and exit of the charging area should be connected to the road outside the station. The charging station should be set up with a buffer distance or buffer zone, with parking lanes for electric vehicles waiting to be charged to facilitate the entry and exit of electric vehicles.
The single lane width of the charging area should not be less than 3.5m,The width of the double lane shall not be less than 6m. The turning radius is determined according to the type of electric vehicle, and should not be less than 9m; the road gradient should not be greater than 6%, and the slope should be outside the station.
charger should be set close to the charging area, and the charging of electric vehicles in the parking space should not hinder the charging of other vehicles in the station.
The charging area should consider installing rain and snow protection facilities to protect the charging facilities in the station and bring convenience to the electric vehicles driving and passing through the station.
03 Electrical arrangement
The arrangement of electrical equipment of the charging station should follow the principles of safety, reliability, and application, and facilitate installation, operation, handling, maintenance, and debugging. The layout of electrical equipment should comply with the " 20kV and below substation design code " and " low voltage power distribution design code ".
high-voltage switchgear , transformers, low-voltage switchgear , chargers, monitoring devices, etc., should be installed in their respective functional rooms, and should be installed on the first floor of the building for easy transportation and installation.
The low-voltage switch cabinet and the charger, and the charger and the parking space in the charging area should be as close as possible.
When restricted by the construction site, the low-voltage switchgear and the charger can be installed in the same room. Or the transformer and the low-voltage switchgear are installed in the same room, the transformer should be of dry type, and the enclosure protection level should not be lower than IP20.
When restricted by the construction site, the power distribution facilities and chargers can be installed in the outdoor combined power distribution station, and the foundation should be appropriately raised to facilitate ventilation and waterproofing.
The transformer room should not be arranged adjacent to or directly below the control center. If it cannot be satisfied, measures should be taken to prevent electromagnetic interference from .
04 Charging pile settings
AC charging piles provide on-board chargers with AC power for electric vehicles 3span battery packs provide small energy capacity for electric vehicles, and DC battery packs provide power for electric vehicles.
Charging piles should be installed in the parking lot. According to the local electric vehicle development plan, a certain percentage of charging piles should be set up in accordance with the parking space, and priority should be given to setting up charging piles in the parking lot of the power supply business site.
Charging piles should be installed beside the parking space and close to the distribution station. The outer casing of the charging piles should have a protection level of no less than IP54. .
05 How to apply for the installation service
According to the "State Grid Charging and Swap Facility Application Notice (Following High Voltage)" the business process for the charging and replacement facilities including the five-installation report Three aspects:
Electricity application. The application materials that need to be provided to the local State Grid power supply company include: 1. Application form for installation; 2. Customer valid identity certificate (including business license); 3. Fixed parking space ownership certificate or ownership unit license certificate.
Confirm the plan. After accepting the customer’s application for electricity use, the power supply company will arrange staff to check the power supply conditions on site on the next working day or at the time agreed with the customer.And reply power supply plan within 15 working days. According to national regulations, the customer is responsible for the construction below the property right demarcation point, and the power supply company is responsible for the power supply side project above the property right demarcation point.
Engineering design. The customer independently selects the design unit of the project within the scope of property rights (requires corresponding qualifications). After the design is completed, the design documents need to be submitted to the power supply company for review, and the power supply company will complete the review within 10 working days.
Engineering construction. The customer independently selects the construction unit of the project within the scope of property rights (with corresponding qualifications) to carry out the construction. Before concealed projects such as cable ducts and power grids are covered, the power supply company shall be notified in time for intermediate inspection; after the project is completed, it shall be submitted for inspection in time, and the power supply company will complete the intermediate acceptance and completion acceptance within 5 working days.
Electrical connection. After the completion of the inspection and acceptance, the customer and the power supply company have signed the "Power Supply Contract" and related agreements, and after the business expenses have been settled, the power supply company will install the meter to connect to the electricity within 5 working days. The standard of business expenses is carried out in accordance with the price standard of the local price department.
