Dunia dekin 800 kV / 80 kA sirket choppera li ser wergerên taybetmendîya welatê veşart kirin.

9anê Nîsan de, yek nû ve jiçhîrên kirkirina jorîn da ku di ser gas-insulated metal-enclosed switchgear de ye—ji bo ZF27-800(L)/Y6300-80 namkirin—bêtirî bir biyîstiyek teknîkî ya li ser dîjîla wergerandin Cinese Society for Electrical Engineering (CSEE) li Beijing. Ji bo derketina berengav bû yên taybetandî yên full independent intellectual property rights, ji bo yeketîna hundiryan mezinên Cine û partnerên din dikarî hatî çêkirin. Ji bo vebijarka 800 kV, 80 kA ya herî yekem di jihan de, li ser performansa kompîlmanî ya li serên hevî yên duniyayî hatiye bêtirî kirin. Komiteya bêtirîkirin bi yekbûyî tevnahatinên wî piştgirî kirin, wekî şimareke yekem yên muhîm di sazeya ultra-high-voltage (UHV) switching equipment de, û ew eku niha serdast bike di navbera teknolojian paqijan de.

Vebijarka innovatîfê ji bo State Grid Shaanxi Electric Power Company dest pê kirin, bi parêzgiyên nîvendî yên taybetandî yên Cinese switchgear manufacturer, Xi’an Jiaotong University, û China Electric Power Research Institute—wergerandin modelî yên zêdetirî yên derketina industry, academia, research, û end-use applications. Tirîka R&D metoda modelingê ya bikalên nozzle arc dynamics di jiçhîrên kirkirina jorîn de dest pê kirin û modela evaluation ên bêtirîkirina interruption dikarî bêtirî kirin, lêseriya teknîkî yên cihêrî yên 800 kV / 80 kA current interruption bêtirî kirin.

Bêtirîkirina wî ne tik li ser problemê ya rastînê ya short-circuit currents di gridê ya 750 kV de Cinese bêtirî kirin, belkî serperestî, stabilitî, û kapasitê rengkirina systemên mezinên elektrik bêtirî kirin. Wekî serperestî, integritasyonê ya renewable energy sources mezin bêtirî kirin û serperestîya supplyên elektrikê ya welatiya bêtirî kirin. Belkî, fundationê ya bikalên teknolojîya power equipment Cinese ji bo daxistina sathên voltage yên herî yekem û interrupting capacities yên herî yekem bêtirî kirin—representing a critical step in transitioning China’s domestic power equipment industry from “follower” to “peer competitor” and ultimately to “global leader,” underscoring China’s dominant position in UHV switching technology worldwide.

Ji bo niha, di dema Cinese derketina modern socialist country de, high-quality development of its economy and society demands more secure and stable energy supplies. Bi serkeftina gridê ya elektrik, large-scale integration of renewable energy, û accelerated construction of a new-type power system, short-circuit currents at certain substations have already exceeded 63 kA. This escalating risk of short-circuit overloads and system instability urgently calls for domestically developed, high-end switching equipment with 80 kA interruption capability as a robust technical backbone.

Li serberê, State Grid Shaanxi Electric Power û Cinese switchgear manufacturer leadership strengths yên wan biyîstin, resources yên wan biyîstin, û tirîka joint task force yên cross-disciplinary dikarî form kirin ji bo key technological research û prototype development for 80 kA high-capacity switchgear—delivering core technologies and equipment essential for the new power system.

According to reports, the newly appraised ZF27-800(L)/Y6300-80 circuit breaker features three major advantages:

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

• Mature, reliable structure with stable insulation and 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 and hydraulic operating mechanism. Enhanced contamination control and optimized transmission systems further improve insulation integrity and mechanical reliability.

• Full dimensional compatibility for seamless engineering deployment:
  The new breaker shares identical external dimensions and 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, and outstanding cost-effectiveness.

A senior executive from the Chinese gas-insulated switchgear manufacturer stated that the company will firmly implement 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,” the company will intensify R&D investment with heightened political responsibility and 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 and the nation’s ambition to become a global leader in advanced equipment manufacturing—writing a new chapter of scientific and technological self-reliance and strength on China’s journey toward national rejuvenation.