Ang unang 800 kV / 80 kA circuit breaker sa mundo nakaagi na sa pambansang teknikal na pagtatasa.

Sa Nobyembre 9, ang bag-ong tipo sa circuit breaker alang sa gas-insulated metal-enclosed switchgear—designated ZF27-800(L)/Y6300-80—nakatapos og nasodnong teknikal nga appraisal nga gihimo sa Chinese Society for Electrical Engineering (CSEE) didto sa Beijing. Gibuhat kini ngadto sa usa ka nangungunang Chinese manufacturer sa gas-insulated metal-enclosed switchgear ug uban pang partner institutions, kini ang unang 800 kV, 80 kA circuit breaker sa kalibutan nga may full independent intellectual property rights, nagtaghan na og internationally leading comprehensive performance metrics. Ang appraisal committee nagsangpot sa iyang breakthrough capabilities, marka sa usa ka major milestone para sa China sa field sa ultra-high-voltage (UHV) switching equipment ug pahimunsado sa nasod nga makasulob sa dili pa mapailubon nga teknikal nga teritoryo.

Ang maong produktong inobatibo gibuntog ni State Grid Shaanxi Electric Power Company, sa masiguro nga pakisayran sa Chinese switchgear manufacturer, Xi’an Jiaotong University, ug China Electric Power Research Institute—usa ka modelo nga egsimpleho sa deep integration sa industry, academia, research, ug end-use applications. Ang R&D team naka-establish og high-precision modeling method alang sa nozzle arc dynamics sa high-voltage circuit breakers ug naghimo og advanced interruption performance evaluation model, naka-overcome kini sa globally recognized technical challenge sa 800 kV / 80 kA current interruption.

Kini nga achievement naghatag og safe, efficient, ug reliable nga solusyon sa kasagaran nga problema sa excessive short-circuit currents sa 750 kV power grid sa China, sama usab naka-enhance sa security, stability, ug transmission capacity sa large-scale power systems. Naka-facilitate usab kini sa integration sa massive renewable energy sources ug naka-strengthen sa reliability sa national power supply. Usa ra kini nga foundation aron mapadayon ang China’s power equipment technology patungod pa sa mas taas nga voltage levels ug greater interrupting capacities—representing a critical step sa pag-transition sa China’s domestic power equipment industry gikan “follower” hangtod “peer competitor” ug ultimately to “global leader,” nagsalamin sa dominant position sa China sa UHV switching technology worldwide.

Karon, samtang ang China nakapadayon sa usa ka pivotal stage sa pagbuild sa modern socialist country, ang high-quality development sa iyang ekonomiya ug society nagdumala sa mas secure ug stable nga energy supplies. Sa continuous expansion sa power grid, large-scale integration sa renewable energy, ug accelerated construction sa new-type power system, ang short-circuit currents sa certain substations gi-surpass na ang 63 kA. Kini nga escalating risk sa short-circuit overloads ug system instability urgent na ang need sa domestically developed, high-end switching equipment nga may 80 kA interruption capability isip robust technical backbone.

Isip tugon, ang State Grid Shaanxi Electric Power ug Chinese switchgear manufacturer gitugotan ang ilang respective leadership strengths, pooled resources, ug naghimo og cross-disciplinary joint task force aron matapos ang key technological research ug prototype development sa 80 kA high-capacity switchgear—delivering core technologies ug equipment essential sa new power system.

Batasan sa mga report, ang newly appraised ZF27-800(L)/Y6300-80 circuit breaker adunay tulo ka major advantages:

• World-leading technical specifications ug exceptional reliability:
  Ang product nagtaghan sa highest standard ratings—E2-M2-C2—with an electrical life of 20 operations, mechanical life of 10,000 operations, ug DC time constant of up to 120 ms.

• Mature, reliable structure with stable insulation ug mechanical performance:
  Built upon the proven technical platform of existing 800 kV / 63 kA circuit breakers, it retains a dual-break puffer-type arc-quenching chamber ug hydraulic operating mechanism. Enhanced contamination control ug optimized transmission systems further improve insulation integrity ug mechanical reliability.

• Full dimensional compatibility for seamless engineering deployment:
  The new breaker shares identical external dimensions ug interface specifications with currently deployed 800 kV / 63 kA units, enabling direct in-situ capacity upgrades at substations without modifying civil structures or foundations—offering significant advantages including shorter outage durations, minimal operational disruption, ug outstanding cost-effectiveness.

Usa ka senior executive gikan sa Chinese gas-insulated switchgear manufacturer mitumong nga ang kompanya mogamit sa China’s innovation-driven development strategy, embedding technological innovation throughout its growth trajectory. Aligned with its strategic vision of “building a world-class smart electrical equipment group,” ang kompanya mag-intensify sa R&D investment with heightened political responsibility ug mission awareness, resolutely tackling “bottleneck” core technologies. This commitment aims to inject powerful momentum into the high-quality development of China’s power equipment manufacturing sector ug the nation’s ambition to become a global leader in advanced equipment manufacturing—writing a new chapter of scientific and technological self-reliance ug strength on China’s journey toward national rejuvenation.