Kaidance Da Jinin ɓangarwa da Kiyasin Islanding a Cikin Solar Grid Systems

Oliver Watts

فیلڈ: Bincike da Bincike

China

Makarantar Islanding Effect

Idan kungiyar jirgin karkashin kula na gida ya kammala bayan wasu abubuwa da kuma kungiyoyi da ba a yi shiga kula, ko kuma idan an kammala kula daidai, kungiyoyin kula mai yawa na zamani za su iya haifar da kula zuwa abincin gida a kan birnin, wanda zai taka wani babban "island" wanda ba ake kawo kawo a kan kungiyar kula.

Dalilai da take Saƙo ta Islanding Effect

Kasance Rike da Kula da Tsari: Ba kungiya ba zai iya kawo kawo rike da kula da tsari a kan birnin da ya haifar. Idan waɗannan parametoci suka haifar da kisan hukumomi, za mu iya saƙo masu kayayyakin da ke ciki.
Rabuce Mafi Yawan Tabbacin Kayayyaki: Idan mafi yawan tabbacin kayayyaki ya kammala kasa na kula da inverter, za mu iya kasance mafi yawa, kuma inverter ya zama da kansu ko kuma zama da saƙo.
Saƙo da Duka Makaranta: Idan an kammala kula daidai a kan birnin da ya haifar, za mu iya kasance duka makaranta, kuma inverter ko kuma kayayyakin da ke ciki za su iya saƙo.
Yawan Hadin Kaya: Lissafi da ke ciki da inverter za su iya kasance da kula har da kungiyar kula, wanda ya fi yake yawan hadin kaya da kayayyakin da ke ciki da kuma kungiyar kula.

Huruwar Samun Islanding Effect

An samun islanding da wasu huruwar da suka da damar:

Samun Haifar da Tsari: A kan microgrid da ya haifar, tsari na system ya kammala kasa na nominal value na main grid. Samun haifar da tsari ya taimaka wajen samun islanding conditions. Wannan zai iya a yi amfani da frequency monitoring devices ko kuma SCADA systems.
Samun Haifar da Reactive Power: Idan bai samu reactive power support na main grid, haske reactive power output da load changes a kan generator ya zama da damar a kan mode island. Samun reactive power ko kuma power factor ya taimaka wajen samun islanding.
Samun Abin da Rike: Abin da rike a kan microgrid da ya haifar ana kammala kasa na main grid. Samun abin da rike a kan voltage monitoring equipment ya taimaka wajen samun islanding.
Tambayar da Tsari da Rike: Haske tsari da rike a kan system da ya haifar ana kammala kasa na grid-connected mode. Tambayar da wannan relationship ya taimaka wajen samun islanding events.
Samun Reverse Power Flow: A kan islanding, distributed generators za su iya haifar da kula zuwa line da ke ciki da kula. Samun direction da power flow ya taimaka wajen samun islanding, a yi amfani da power analyzers ko kuma protection relays.

Note: Daga cikin sabon microgrid configuration da operational context, wani hura maida ita ce. Da ma'ana, ana amfani da passive da active detection techniques. Idan kuma, zai iya buƙatar amfani da monitoring equipment da suka da damar, calibration, da kuma maintenance don samun detection da zai iya da kyau da kuma damar.

Strategijin Neman da Jirgin Islanding Effect

Don neman da kuma jirgin islanding, ana amfani da wasu masu amfani:

Centralized Monitoring and Control: Yi amfani da system centralized don samun interconnection status da operational parameters na microgrid da main grid. Idan an samu islanding, system ya kammala kasa disconnected islanded section.
Reliable Anti-Islanding Coordination Logic: Amfani da robust switching logic wanda ya taimaka reconnection to the main grid only occurs after stable grid conditions are confirmed, preventing unsafe reclosing.
Intelligent Protection Devices: Deploy smart protective relays capable of real-time monitoring of voltage, frequency, and other critical parameters. These devices can autonomously trip inverters or disconnect circuits when islanding is detected.
Programmable Logic Controllers (PLCs): Use PLCs or advanced controllers to automate disconnection and reconnection procedures based on predefined safety rules and grid conditions.
Smart Load Management: Integrate intelligent load control systems to dynamically balance or shed loads during islanded operation, preventing overloads and enhancing system stability.
Compliance Testing and Regulatory Oversight: Adhere to relevant standards (e.g., IEEE 1547, IEC 62109) and conduct regular compliance testing to ensure anti-islanding functions meet safety and performance requirements, thereby minimizing risks to both the grid and end-users.

Reference Standards