Instalproceso kaj kontrolpunktoj de fermita kombinita elektra alta-volta ĉefŝaltanaro GIS-equipmento

Analizo de la Instalproceso de Ekiparoj GIS
Preparo Antaŭinstala por Ekiparoj GIS

Unue, uzas gruon por levi la ekiparon al la enirejo. Tiam, enmetas ŝtanganilon en la groso de la profila ŝtalo por movi la ekiparon laŭ la profila ŝtalo en la ĉambron. Ĝi povas esti ricevita per rulilo aŭ forklifta por transloko. Antaŭ la instalado de la ekiparo post la finfaritaj translokmanoj, sufiĉe da antaŭparolaj preparoj estas bezonataj. Unue, la ekiparo bezonas kompletan inspektadon kaj testadon por certigi, ke ĝi konformas al la disegnaj normoj kaj specifaĵaj postuloj. Duone, necesaj manutentaj kaj kuraĝantaj operacioj devas esti faritaj por garantii ĝian normalan funkciadon. Finfine, detalaj laborplanoj kaj operacioprocodoj devas esti formulitaj kaj strikte efektivigitaj.

En realeca laboro, la jenaj punktoj devas esti notitaj:

• La civileca, lumiganta, kaj dekoranta projektoj en la instalaareo devas esti finfaritaj kaj pasintaj la akceptkontrolo.

• Profesiaj supervizantoj estas bezonataj por direkti la levan durante la produktinstalado.

• Certigu, ke la bezonataj lumiga kaj energofornada ekiparoj povas esti fidinde uzitaj antaŭ la instalado.

• Malferma kaj ŝlosigebla deponejo devas esti agordita proksime de la laborareo en la instalaareo por deponejo de instaltukaroj, partoj, kaj aliaj artikoloj, kaj mova tukarkarretaro devas esti equipita por transportado de tukaroj kaj partoj.

• La instalaareo devas esti tenata altkurete pura. La plankovro devas esti kuvertita per plankoletero, kaj la plankovro devas esti ĉiutage purigita per aspirilo aŭ mokita kun humida moko.

• Mova kontaktsorto (380 V, 220 V) kovrante la tutan instalaareon devas esti provizita sur sitego.

• Personoj sen permeso estas prohibitis eniri la installaborareon durante la produktmontado.

La analizo de danĝeraj punktoj kaj preventivaj mezuroj estas jenaj:
Danĝera Punkto 1: Elektroŝokado de Personoj
Preventivaj mezuroj estas jenaj:

• Antaŭ la laboro, la labordirektoro devas informi ĉiujn laboristojn pri la vivaj partoj apud la laborareo.

• Atente kontrolu la mantenan areon kaj eniru la laboron nur post konfirmado, ke ĝi estas prava.

• Kontaktu ambaŭ flankojn de la mantena sekcio de la ekiparo.

Danĝera Punkto 2: Toksikeco de Gazaj Decompozaj Produktoj
La decompozaj produktoj de SF₆ gaz sub la ago de elektra arketo estas tre toksikaj kaj povas gravseke afekti la fizikan sanon je kontaktado. Preventivaj mezuroj estas jenaj:

• Kiam la GIS cilindro estas malfermata, la personaro devas staradi suprevene kaj ventili dum 0,5 horoj.

• La personaro en kontaktado devas porti protektan vestaĵon kaj maskon.

Danĝera Punkto 3: Danĝero de Gazĉambra Premo
Preventivaj mezuroj estas jenaj:

• Rekovru kaj plenigu SF₆ gazon, kaj asignu dediĉitan personon por montri la ekipara instrumentojn.

• Nur kiam estas konfirmita, ke la rekoverita premo de SF₆ gaso konformas al la postuloj de la plano, la boltoj konektantaj la kovran tablon aŭ flancon povas esti malstreĉitaj.

Instalproceso de Ekiparoj GIS
Respondecoj de GIS Ekiparfabrikantoj

During the pre - installation and installation process, the manufacturer conducts technical communication and liaison with relevant personnel, and provides installation training for those who install the product for the first time. The specific responsibilities are as follows:

• Provizi teknikajn dokumentojn rilatantajn al la instalado.

• Ofertu teknikan gvidon tra la tuta instalado, regulaĵo, kaj testoperacioj.

• Inspektu la montitajn kaj netigitajn internajn partojn de la tanko kaj faru finan kvalitkontrolo.

• Provizi artikolojn kiel sekundara kablandokablo, kabelmarkiloj, kaj terminalblokoj de la loka kontrolkabino al la produto.

Respondecoj de la Instalunujo

Sub la gvido de profesia personaro de la GIS ekiparfabrikanto kaj la superzorgo de la sitegaj supervizantoj, la instalunujo estas respondema pri la jenaj taskoj:

• Transportu kaj forigu la eksteran pakigon de la produto.

• Levu kaj pozicionu la GIS ekiparon.

• Montu, netigu, kaj inspektu la internajn partojn de la tanko.

• Faru operaciojn kiel vakuum-pompado, gaz-plenigo, fuga-deteckado per envolvado, kaj mikro-vat-detekado.

• Fabrikasu kaj instaligu teraplatenojn, instaligu produktosupportojn, manutencplatojn, kaj kontrolkabinojn.

• Faru diversajn produkttestojn, kiel rezistanctestojn, kaj karakteristikajn testojn de transformiloj de fluo, transformiloj de tensio, circuitrompiloj, terŝaltiloj, kaj diskonectiloj.

• Strekigu la boltojn je ĉiuj flancunligaj lokoj ekstere de la tanko.

• Poseu kabelojn kaj faru kablandoperaciojn.

•  Apliku antikorozan silikonan grezon tempe je la flancunligaj pozicioj durante la produktinstalado.

Instalproceskontrolo: Unue, faru detalajn inspektionojn de ĉiu bajejo por certigi, ke ĝi konformas al la desegnpostuloj. Tiam, metu la ekiparbajejojn aŭ modulon en iliajn respektivajn poziciojn, atente netigu ilin per fibro-malplena papero imbuta en alkoholo, kaj protektu la interfaciojn. Sekve, konektu la ekiparbajejojn, certigante, ke la konektoj konformas al la teknologiaj postuloj. Fine, faru sekundaran debagadon kaj testadon de la tuta sistemo por certigi ĝian problem-liberan funkciadon. En realeca laboro, la jenaj punktoj devas esti notitaj:

• La selektado de ekiparoj estas grava. Devas elekti produktojn kun fidinda kvalito, kiuj estas taŭgaj por la sitega medio. Ekzemple, en plateau-areoj kun grandaj temperaturdiferenco inter tago kaj nokto, necesas instali ŝtufilojn en la ekiparoj por certigi la stabilecon de la interna SF₆ gaso. En marbordaj areoj, devas konsideri koroz-resistantajn strukturojn, speciala atento al la terminalplatenoj de tubetaroj, kiuj estas facile korozataj pro umideco, do devas aldoni koladproceduron.

• La instalado de ekiparoj devas esti farita strikte laŭ la desegnopostuloj por eviti potencialajn sekurecaproblemojn.

• La konektoj inter ekiparoj devas esti faritaj zorge por konformi al purigpostuloj kaj eviti potencialajn disĉarghazardojn.

Inspekto During the Installation Process of GIS Equipment

Both the metal surfaces and insulating surfaces of GIS equipment components should be carefully inspected and cleaned. Ensure that there are no scratches, uneven areas, or dust on the surfaces of all components, so as to guarantee a uniform internal electric field of the GIS equipment and its long-term stable operation.

GIS Equipment Acceptance

During the installation of GIS equipment, acceptance is a crucial step. Through comprehensive inspection and testing of GIS equipment, it can be ensured that it complies with design specifications and quality standards, and subsequent operations can proceed smoothly. In practical work, the following steps should be followed:

• Inspect the appearance of the GIS equipment to confirm whether there are any damages or defects.

• Check the wiring of the control cabinet and its mechanisms, including electrical circuits, sensors, heaters, and drive systems, to ensure normal operation.

• Test the electrical operating performance of the GIS equipment to ensure it meets the functional requirements for electrical operation.

For different types of GIS equipment, the specific acceptance methods may vary. For example, for the hydraulic spring mechanism of a circuit breaker, factors such as oil pressure, speed, and opening/closing time need to be measured and analyzed to determine whether its operating state is stable and reliable. For mechanical transmission devices, tests on characteristics such as motion accuracy and stability are required for evaluation.

Key Points of GIS Equipment Installation Control
Technological Requirements during GIS Equipment Installation

Construction workers should be familiar in advance with the basic construction methods and technical requirements according to relevant maintenance regulations or on-site maintenance plans. Upon the arrival of spare parts at the site, they should be unpacked and inspected immediately and compared with the on-site equipment. Before starting work, dedicated personnel should take inventory of and register spare parts and tools. If any damage or shortage is found, work is prohibited until they are replenished. During the equipment disassembly and restoration processes, actions must be slow to avoid collisions.During tank-opening maintenance, dust-proof and moisture-proof measures should be taken as follows:

• Set up a mobile maintenance box at the construction site to store disassembled components and maintenance tools.

• Equipment maintenance personnel should wear work clothes, safety helmets, and masks.

• The mating surfaces after equipment disassembly should be covered with dust covers immediately.

• Non-maintenance personnel should not frequently enter and exit the maintenance area.

• Special personnel should be responsible for checking the tools used for equipment maintenance to ensure nothing is left inside the equipment.

• Prevent dust, moisture, and fibers from entering and foreign objects from remaining inside the GIS equipment. Before replacing the adsorbent cover, a dedicated person should be assigned to do the final cleaning.

• The surface cleaning of the tank body and insulation parts is preferably carried out in a "suck-wipe" cycle.

The usage requirements for SF₆ gas recovery devices are as follows:

• The gas recovery device should be operated by personnel who have received special training and are familiar with the operation method.

• Before use, it should be confirmed that all parts of the recovery device are in good condition.

• During use, misoperation must be absolutely prevented to avoid contaminating the SF₆ gas or causing environmental pollution due to gas leakage.

• The recovery device should use dedicated hoses and be kept clean and dry.

Gas cylinders should be equipped with safety and vibration-proof rubber rings and clearly labeled to prevent confusion between old and new gases. Tank-opening work should be reviewed. The review work should be assigned to dedicated personnel, especially to check the tightness of internal screws. If necessary, review marks should be made on each screw, and then the person in charge should conduct a final inspection. The tightening torque of bolts should be applied as required by the manufacturer.The selection and usage requirements for lubricating greases and sealing greases are as follows:

• Lubricating greases for movable mechanical parts inside the GIS and for electrical contacts should be selected as required by the manufacturer.

• The layer of lubricating grease should not be too thick.

• When using vacuum silicone grease for all "O"-ring seals and flanges, avoid applying it to the inner side of the "O"-ring seal that comes into contact with the SF₆ gas.

The technological requirements for disassembly and assembly of sealing surfaces are as follows:

• Flange screws must be loosened diagonally along the circumferential direction.

• The sealing groove surface should not have scratches, and the sealing groove and flange plane should not rust.

• The grinding of damaged sealing groove surfaces should meet the manufacturer's requirements.

The technological requirements for replacing adsorbents are as follows:

• Adsorbents that are pre-treated and sealed-packaged at the factory can be used directly.

• Damaged or used bagged adsorbents must be dried before being installed.

• After the adsorbents are installed in the GIS, vacuum-pumping operations should be carried out immediately, and the time should be controlled within 30 minutes.

The technological requirements for vacuum-pumping are as follows:

• For disassembled gas chambers, pump to a vacuum of 40 Pa, continue pumping for 0.5 hours, stop the pump, and check the vacuum degree after 2 hours. If it is not more than 133 Pa, it is considered qualified. Fill with SF₆ gas to the rated pressure, and replenish the pressure in the depressurized gas chamber to the rated pressure.

• When detecting the vacuum degree, the McLeod gauge is strictly prohibited.

The technological requirements for filling SF₆ gas are as follows:

• When filling gas, first open the SF₆ gas cylinder and release a small amount of gas to prevent air from entering the GIS.

• Before use, the interface of the on-site gas-filling pipe should be cleaned, and after use, it should be properly stored and not placed on the ground to avoid introducing foreign objects during the gas-filling process.

• SF₆ gas cannot be directly filled into the gas chamber from the gas cylinder; it must be decompressed through a pressure-reducing valve.

• For SF₆ gas with sufficient micro-water content, the mass fraction of water should be less than 5×10⁻⁶, which is less than 40 μL/L when converted to volume ratio.

The technological requirements for local cover-type leak detection are as follows:

• The plastic cover (bag) should not have holes.

• All leakage points should be wrapped without omission.

• Detection personnel should be conscientious in detection, and the equipment and instruments should have good and reliable performance.

Inspection Work after GIS Equipment Installation

After the GIS equipment installation is completed, strict inspection and acceptance are required. Each component should be inspected in detail to ensure its quality and performance meet the standards. Then, a comprehensive inspection and test of the entire system should be carried out to ensure its normal operation and prevent potential safety hazards for users.

Only by carefully completing each step of the preliminary work can all tasks of subsequent work be successfully accomplished.

Effective Strategies for Optimizing GIS Equipment Installation Processes and Key Control Points
Implementing Safety Measures in GIS Equipment Installation

During the GIS equipment installation process, safety is a crucial aspect. To ensure the normal operation of the equipment and the safety of personnel's lives and property, a series of safety measures need to be taken, as follows.

Strengthening Inspection and Maintenance of GIS Equipment after Installation

• Pay attention to safety protection measures. During operation, relevant regulations and standards must be strictly adhered to. Appropriate personal protective equipment should be worn to avoid accidents. Meanwhile, management of the on-site environment should also be strengthened to prevent dust, oil stains, etc. from entering the interior of electrical components and affecting their normal operation.

• Monitor changes in equipment status. In daily use, attention should be paid to changes in the equipment's status, such as temperature rise and abnormal current fluctuations, so that corresponding measures can be taken in a timely manner.

• Maintain records and feedback. For any problems or defects discovered, timely recording and reporting should be carried out, and solutions should be submitted to relevant departments for improvement and refinement. Based on actual conditions, formulating a reasonable inspection and maintenance plan to enhance the safety performance and service life of the equipment is one of the important means to achieve efficient and stable operation of GIS equipment.

Improving the Quality Control of On-site Gas Filling for GIS Equipment

The inspection and maintenance requirements for gas pipelines are as follows:

• All connecting pipelines and connection components should be in good condition, clean, and free of oil stains. The connection between the pipeline and the product should be kept clean and can be wiped with lint-free paper dipped in alcohol.

• Before a pipeline that has been out of use for more than 10 days is reused, it needs to be purged and cleaned with high-purity nitrogen. After pipeline operations are completed, the connection heads should be sealed with plastic caps to prevent dust and foreign objects from entering.

Install filters at the gas-filling joints of pipelines to ensure the quality of gas filling.

Strengthening the Emergency Management of GIS Equipment

The specific measures for strengthening the emergency management of GIS equipment are as follows:

• In case of a malfunction, immediately stop the operation, notify relevant personnel for handling, and promptly contact the maintenance department or the technical support team of the manufacturer to resolve the issue quickly. In case of emergencies such as fires or explosions, evacuate the site as soon as possible to avoid casualties.

• In case of equipment damage, immediately stop the machine and notify the relevant department for handling. Meanwhile, isolate the damaged part to prevent other components from being affected. If necessary, temporary repair methods can be adopted to ensure the normal operation of the equipment.

• Pay attention to basic safety issues, such as the wiring method of electrical circuits and the selection of power supply voltage. In actual operation, strictly comply with relevant safety regulations and standards to ensure that the device can operate normally without endangering the surrounding environment.

Conclusion

In conclusion, during the installation process of GIS equipment, it is necessary to strictly comply with relevant standards and specifications to ensure the safe and stable operation of the equipment. At the same time, attention should also be paid to issues such as the connection methods and circuit layout between equipment to ensure the stability and reliability of the system. In addition, for the design of the control system of GIS equipment, it is necessary to fully consider the requirements and characteristics of the actual application scenarios and use advanced technical means for