Tattalin Tattalin Karkashin DC da Turbin Mai Yawan Aiki da Kyakkyawar Ƙungiyar IEE-Business

A cikin sassan karamin zama na yanzu, masu kawo karfi mai elektronika ta DC suna da muhimmanci sosai. Suna da amfani da su don kawo karfi daidai ce, kuma suna da muhimmiyar alatun don iyakarwa na shirin karamin zama, lura da shirya karamin zama, da kuma tattalin arzikin karamin zama. Daga cewa an yi hanyar da yawa da karamin zama mai tsayi da tsayi (HVDC) da ya faru a duniya, zaɓon da ke buƙata don kiyasin kawo karfi mai elektronika ta DC suna zama daɗi daɗi, musamman a nan da take da kiyas da kawo karfi da idanin sahihiyar sabis. Saboda haka, ilimin kiyasa na kawo karfi mai elektronika ta DC ya zama muhimmiyarsa ga taimakawa da kiyas da inganci da kudurwarsa ga sassan karamin zama.

1 Bincike Ilimin Kiyasa na Kawo Karfi Mai Elektronika Ta DC
1.1 Yadda Ake Yi Kiyasa

Kiyasa na kawo karfi mai elektronika ta DC suna da muhimmiya saboda hukumomin comparator na karamin zama mai tsayi da teknologi na synchronization mai optical fiber. Idan a yi bayan, comparator na karamin zama mai tsayi ya yi amfani da teknologi na magnetic-modulation don kawo karfi mai tsayi. Wannan teknologi suna da amfani da tushen magana da iron core wanda an yi shi daga karamin zama. A cikin amfani, idan karamin zama ya zama a cikin masu kawo karfi mai yamma, ya yi magnetize iron core da ke gaba. Iron core wanda ya yi magnetize ya yi tasiri a cikin karamin zama a cikin masu kawo karfi mai biyu, kuma wannan tasiri zai iya amfani don kawo karfi mai yamma.

1.2 Tashin Sistem na Kiyasa

Sistem na kiyasa na kawo karfi mai elektronika ta DC suna da kungiyoyin karamin zama mai tsayi, connection da synchronization na standard device da device under test, da kuma unit na data acquisition mai kiyas. Tashin da design da function da ke cikin kungiyoyin waɗanda suka da muhimmiya sosai ga kiyas da inganci da kudurwarsa ga prosesi na kiyasa.

• Karamin zama mai tsayi suna da muhimmiya don bayar karamin zama mai tsayi da zai iya kawo da ita don kiyasa. Design da ke ciki suna da muhimmiya don ya ba da kiyas da stability da ripple output da maɗa. Don haka, karamin zama mai tsayi suna da amfani da komponenton power electronics mai kiyas da system na feedback control mai tsayi don kawo da ita da kiyas da karamin zama da inganci. Idan load ya zama ko karamin zama ya zama, zai iya ba da kiyas da karamin zama da inganci.

• Idan karamin zama mai tsayi ya bayar karamin zama mai yamma, connection da synchronization na standard device da device under test suna da muhimmiya don kiyas da kiyas na kiyasa. Standard device suna da amfani da instrument mai kiyas da ma'a jama'a, wanda ya ba da karamin zama mai kiyas da kiyas. Device under test suna da amfani da kawo karfi mai elektronika ta DC wanda ake kiyasa. A cikin prosesi na kiyasa, standard device da device under test suna da amfani don kawo da ita da kiyas da kiyas, domin kawo da data da kiyas da kiyas.

1.3 Hukumomi na Kiyasa

A cikin prosesi na kiyasa na kawo karfi mai elektronika ta DC, zan iya zama da muhimmiya sosai don kiyas da kudurwarsa ga resulta. On-site calibration da laboratory calibration suna da muhimmiyan da yake da yake. Hukumomin digital direct measurement na kiyas da kiyas ya ba da amfani don kiyasa. Hukumomin analog da digital output suna da amfani don kawo karfi mai elektronika ta DC da yake da yake, domin kawo da amfani ga wasu wurare.

(1) Bincike On-site Calibration Da Laboratory Calibration

Yana da yawan muhimmiya a nan da ke nuna hukumomin da environment:

• On-site Calibration: Ana yi shi a cikin lokacin da kawo karfi mai elektronika ta DC, kuma ana iya nuna tasiri na environmental factors kamar temperature, humidity, da electromagnetic interference. Yana da amfani don equipment da ke da ita da kiyas da kiyas, kuma abin da ke da ita da kiyas da kiyas. Amma, idan akwai yawan muhimmiya a cikin lokaci, kiyas da kiyas na kiyasa zai iya zama da yake da yake.

• Laboratory Calibration: Ana iya kawo da environment da kiyas da kiyas, kuma ana iya kawo da test conditions da kiyas da kiyas, wanda ya ba da kiyas da kiyas da kiyas da kiyas. Amma, environment na laboratory ba zai iya kawo da working scenario na lokaci, kuma ba zai iya kawo da analysis na kiyas da kiyas na environmental impact.

(2) Hukumomin Digital Direct Measurement Na Kiyas Da Kiyas

Don amfani da equipment na digital measurement mai kiyas da kiyas, ana iya kawo da output na kawo karfi mai elektronika ta DC da kiyas da kiyas, kuma ana iya kawo da resulta da kiyas da kiyas, kuma ana iya kawo da error na intermediate links.

(3) Hukumomin Analog Da Digital Output

Hukumomin ya ba da muhimmiya saboda amfani da output characteristics na kawo karfi mai elektronika ta DC:

• Analog Output Method: Ana iya amfani da instrument na current measuring mai kiyas da kiyas, kuma ana iya kawo da output value, kuma ana iya kawo da standard value don kiyasa, domin kawo da accuracy na analog signal conversion da measurement.

• Digital Output Method: A cikin prosesi na kiyasa, ana iya amfani da software na analysis da synchronization technology don data transmission da processing, domin kawo da kiyas da kiyas, wanda ya da amfani ga kawo karfi mai elektronika ta DC da output mai digital.

2 Abubuwa Da Amsa A Cikin Amfani Ilimin Kiyasa Na Kawo Karfi Mai Elektronika Ta DC
2.1 On - site Anti - interference

A cikin amfani ilimin kiyasa na kawo karfi mai elektronika ta DC, ana iya samun electromagnetic interference mai yawa. Wannan interference suna da shirya daga high - voltage grid, kamar radiation from cables/equipment da system - generated noise. Interference suna da tasiri a cikin kiyas da kiyas, kuma zai iya kawo da error a cikin HVDC systems, kuma zai iya kawo da damage a components. Wannan zai iya kawo da instant errors da long - term stability/reliability issues.

Don haka, optimizing the magnetic shielding structure zai iya taimaka. Principle suna da amfani da high - permeability materials don build a shielding layer around sensitive parts, blocking external magnetic fields. A cikin design, ana iya assess the actual environment (interference type, intensity, frequency) saboda wadannan suna da tasiri a cikin shielding effectiveness. A laminated structure with multi - layer, different - permeability materials works better. For example, the outer layer uses high - permeability materials to absorb most magnetic fields, and the inner layer uses high - resistivity materials to block residual fields. Optimized magnetic shielding design data is in Table 1.

2.2 Digital Synchronization Precision

A cikin ilimin kiyasa na kawo karfi mai elektronika ta DC, synchronization precision zai iya taimaka. Kiyasa suna da amfani don synchronizing multiple devices/data sources a scattered locations. Data precision/reliability depends on time synchronization; small deviations cause inaccuracies, affecting power system efficiency/safety. Selecting/optimizing synchronization tech and comparing optical fiber & GPS synchronization are vital.

In selecting/optimizing, the challenge is controlling complex power environments and wide geographical distributions for accurate synchronization. In strong - interference environments, traditional methods fail. Solutions include introducing IEEE1588 Precision Time Protocol and using precise time - stamping/modern communication for synchronization.

Optical fiber synchronization, with high speed and anti - interference, suits high - precision scenarios (e.g., data centers). It’s unaffected by electromagnetic interference, ensuring signal purity, but has high deployment costs. GPS synchronization is cost - effective, covers wide areas, and fits scattered networks. It uses satellite signals for time stamps but is less stable under severe interference. Synchronization precision comparison under different interferences is in Figure 1.

To address these challenges, select appropriate synchronization tech based on application environment and calibration needs. Prioritize fiber optic sync for low - EMI, high - precision scenarios. For geographically dispersed power networks, consider GPS sync and optimize receiver placement to reduce signal interference. Combining both to add redundancy also boosts sync precision and system reliability.

3 Conclusion

In conclusion, by conducting in - depth research on the calibration technology of DC electronic current transformers and their applications, it is not only of great significance for improving the performance and reliability of current transformers, but also a key factor in driving technological innovation and sustainable development of power systems. In the future, while continuing to optimize the calibration technology, attention should also be paid to the performance of these technologies in practical applications to ensure that they can meet the high - standard requirements of modern power grids.