Prefabricated Substation

key advantages 

1.Rapid Deployment & Space-Efficiency:​ Pre-assembled and tested, it enables quick on-site installation and requires significantly less space than traditional brick-and-mortar substations.

2.Enhanced Safety & Reliability:​ The sealed enclosure provides protection against environmental factors, unauthorized access, and internal fault arcs, ensuring safe and stable operation.

3.Modular Flexibility:​ Designs can be customized with different switchgear, transformer capacities, and LV configurations to meet specific project requirements.

4.Aesthetic Integration:​ The clean, cabinet-style design allows for easier integration into urban and landscaped environments with minimal visual impact.

Product introduction

This product is in full compliance with GB/T17467"high voltage and low voltage pre-installed substation"standard. Applicable to urban public power distribution, street power distribution,industrial and mining enterprises, urban buildings, residential communities,oil field terminals, hotels, parks and construction sites, etc.

Types of meaning

Normal service environment

1.Altitude:≤1000m;Ambient temperature:-25℃~+40℃;

2.Temperature:the highest monthly average temperature+30℃, the highest annual average temperature+20℃;

3.Relative humidity: daily average≤95%,monthly average≤90%;

4.Anti-vibration horizontal:horizontal acceleration 0.4m/s²,vertical acceleration 0.15m/s²;

5.The installation site has no severe impact,no serious pollution, no chemical corrosion, no conductive dust and no explosion risk.If the installation site cannot meet the requirements of normal operating conditions,please consult with our company to solve the problem.

Functions and features

1.The substation is composed of high-voltage room,transformer room and low-voltage room,which can be arranged into type or type;

2.With terminal,ring network or dual power supply mode;

4.Oil immersed power transformer and dry type power transformer can be selected;

5.The cabinet is equipped with enough natural air vents and heat insulation measures to ensure the normal operation of all electrical equipment (forced cooling can be adopted if required by users);

6."Five defense"has complete functions,convenient operation and maintenance,safe and reliable operation;

7.The shell material is stainless steel,aluminum alloy,cold-rolled plate,color steel composite plate,non-metal or a combination of both,anti-aging,flame retardant,anti-corrosion,waterproof,dustproof,with long-term outdoor use conditions;

8.Small volume,light weight,beautiful appearance and environment coordination;

9.When SF6 load switch cabinet is selected,the box is small in overall size,which is more suitable for residential construction and streetlamp transformation.

10.High voltage ring network cabinet can be assembled network automation terminal(RTU)to achieve short-circuit and single-phase grounding fault reliable detection,with the "four remote"function,easy to upgrade the distribution network automation.

Chart

Main technical parameters

Primary plan

Please refer to the attached drawing for the primary substation plan.

A sample diagram of a typical scenario

A sample diagram of a typical scenario is attached.

Foundation and plane layout field

The basic diagram of the substation is shown in the attached diagram.Please refer to the attached drawing for the layout of the substation.

nstallation, use and maintenance

In terms of installation,acceptance, handover test, operation and maintenance of intelligent integrated substation, in addition to the provisions required by the power department, the following matters should be noted:

1.when receiving the product,the user should check carefully according to the relevant regulations.For the product not installed immediately, it should be stored in an appropriate place according to the normal use conditions.

2.the product shall be lifted from the bottom with special spreader,as shown in figure 2.

3.place the product horizontally on the pre-made foundation,then wipe and seal the gap between the product base and the foundation with cement mortar,so as to avoid rain water entering the cable room,and access the high and low voltage cable through the bottom sealing plate of the high andlow pressure room.

4.reliable grounding should be done after the product is installed and inplace;The two main grounding terminals on the channel steel of thebase of the power station,the neutral point of the transformer,the shell and the pile head under the arrester should be grounded by the installation department respectively.All grounding devices shall share one set of grounding devices with a grounding resistance of less than 4 ohms and no less than two grounding leads from the grounding grid to the product.

5.after the product is installed or maintained,the following items should be inspected and tested before putting into operation:

·whether the substation is clean;

·Whether the operating mechanism is flexible;

·whether the main electrical appliances on and off flexible and reliable;

·Whether the electrical auxiliary contact on and off reliable and accurate;

·table and relay action is accurate;

·whether the transformer ratio and wiring polarity of instrument and transformer are correct;

·all electrical installation nuts are tightened,installation is solid and reliable;

·Whether the bus bar is well connected,its support insulator,whether the clamp is installed reliably;

·whether the setting value of electrical appliances meet the requirements,fuse core specifications are correct:

·Whether the contacts of the main circuit and auxiliary circuit meet the requirements of the electrical schematic diagram.

6.Pieces of maintenance

·all components in the product shall be maintained according to their respective technical requirements:

·f the selected transformer is oil-immersed type,oilsample analysis and inspection should be carried out at least

once a year according to the provisions;

·high voltage side switch equipment in operation,after 20 times with load or 2000 times without load open and close operation,should check the contact situation and arc extinguishing device loss,abnormal should be timely maintenance or replacement.

·after automatic tripping of low-voltage switchgear,check and analyze the reason for tripping,to be removed before

re-operation;

·lightning arrester should be a preventive test before the arrival of the thunderstorm season every year;

*The products are accompanied by packing list,certificate of conformity,installation and operation instruction,electrical wiring diagram,instruction of the main components and equipment used in the products,key operating tools and spare parts provided according to the agreement.

Substation structure

Ordering instructions

1.The following information shall be provided when ordering:

·Types and quantities of substations;

·Model and quantity of transformers;

·Pressure and low voltage primary wiring scheme and the model and parameters of the main components;

·Shell material and color.