The inevitable trend of the intelligent development of ankerui power grid is that microcomputer protection devices are used in power systems

AM5 Application of series microcomputer protection devices in the power distribution project of Zhejiang Hengdian film and Television Industrial Park

Encore Cui Yuanhang

Abstract

at present , Microcomputer protection device is widely used in power system , This kind of device can reasonably monitor the operation status of the power system , And record the location and nature of faults in power system in real time , So as to provide reasonable reference information for the rapid treatment of faults . This paper introduces AM5 Series microcomputer protection device , It can provide corresponding protection functions for different protected objects in the power distribution project of the third phase of Hengdian film and Television Industrial Park , It can greatly improve the reliability of substation operation 、 Security 、 Improve the quality of power supply , It is beneficial to realize the comprehensive automation of substation , Realize unattended or few people on duty .

key word ： reliability ; Security ; Integrated automation ; Power supply quality ; Microcomputer protection

Project overview

Zhejiang Hengdian film and Television City Co., Ltd. was established in 2001 year 10 month 24 Japan , It is a member enterprise of Hengdian Group , The company is engaged in film and television tourism , The company's subordinate film and television shooting base 、 Tourist attractions 、 The hotel 、 Tourism marketing 、 Landscaping and decoration, etc 21 subsidiaries , Film and television tourism practitioners 2000 Many people . Hengdian film and television city is the first batch of the National Tourism Administration AAAAA Class ii tourist attractions 、 A large-scale film and television shooting base in the world 、 China's “ National Film and Television Industry Experimental Zone ”.

This project is the power distribution project for the third phase of Hengdian film and Television Industrial Park , The project is located in the west of YINGDIAN Avenue, Hengdian Town, Dongyang City 、 North of Huaxia Avenue , The main content of the project is the third phase of Hengdian film and Television Industrial Park 15-22# High and low voltage distribution cabinet and supporting 3#、4# Switching station . Including the connecting cables of two switching stations , Cables from the switching station to the power distribution room of each building 、 Pipe trench 、 Inspection well , And switching station 、 Cable trench of power distribution room 、 high 、 Low voltage cabinet 、 transformer 、DTU Procurement and installation of cabinets, environmental control cabinets and other equipment 、 Commissioning and acceptance by Dongyang power supply company and power transmission operation . There are switching stations in this project 2 individual 、 High and low voltage distribution room 6 individual , The main equipment and materials are ： Outdoor high and low voltage cable and pipeline laying 、 transformer 、 High and low voltage distribution cabinet 、 Connecting busbar 、 Grounding and auxiliary equipment of power distribution room . The project is newly installed KYN28-12 Type high voltage cabinet 17 platform ,SCB13-2000KVA transformer 4 platform ,SCB13-1600KVA transformer 3 platform ,SCB13-1250KVA transformer 1 platform ,SCB13-630KVA transformer 2 platform ,SCB13-630KVA transformer 2 platform ,SCB13-500KVA transformer 2 platform ,SCB13-400KVA transformer 2 platform , High voltage cabinet 20 set ,GCS Type low voltage cabinet 18 set . High voltage cabinet requirements IP30 And above , Have " Five precautions " requirement , All cabinets must have switches on 、 Opening indication , And install relevant indicator lights , The incoming switch cannot be closed after the rear door of the incoming cabinet is opened .

Product needs

This is aimed at the power distribution project of the third phase of the Hengdian film and Television Industrial Park of Zhejiang Hengdian film and Television City Co., Ltd 3# and 4# In the switching station 、 Configuration of outlet cabinet AM5-F Line protection device , The distribution room will be configured later AM5-T Transformer protection device , The following protection functions are mainly used to realize the real-time monitoring and protection of the equipment operation of the high-voltage cabinet ：

Product plan

The project has 2 individual 10kV Switching station ,4 High voltage distribution room , use 32 High voltage switchgear ,10kV Both the switching post and the high-voltage distribution room have two busbars , All adopt single bus system , The whole distribution room is equipped with 32 platform AM5-F Line protection device , The scheme above is as follows ：

Site installation pictures

This project AM5-F The line protection devices are locally and dispersedly installed on each high-voltage switchgear , The field installation is shown in the figure below , The project has been completed on 2022 Annual power transmission use , Running normally .

chart 3 AM5-F Picture of line protection device installed on site in Hengdian film and Television Industrial Park Phase III power distribution project

Conclusion

stay 10kV The application of microcomputer protection device in power system is the inevitable trend of intelligent development of power grid , Although the price of microcomputer protection is much higher than that of traditional relay , But it can greatly improve the reliability of substation operation 、 Security 、 Improve the quality of power supply , It is beneficial to realize the comprehensive automation of substation , Realize unattended or few people on duty , In another way, the cost is greatly saved . The power distribution project of the third phase of Hengdian film and Television Industrial Park introduced in this paper is to install corresponding protective devices for each protected object , It not only realizes the comprehensive automation of the whole power distribution project , It also reasonably reduces the labor intensity of the staff , The reliability of equipment operation is improved .