基于外壳尺寸和元器件功耗计算低压成套开关设备温升的算法

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An Algorithm for Calculating Temperature Rise of Low-voltage Switchgear Assemblies Based on Shell Sizes and Component Power Consumption

ZHAO Qi* LIU Tong LI Hai-cheng （Shandong Institute for Product Quality Inspection）

Abstract：According toGB/T24276-2017，thepaperputsforwardanalgorithmforcalculating temperatureriseoflow-voltage switchgearassembliesbasedonshellsizesandcomponentpowerconsumption.Theprincipleof thisalgorithm is todetermine theinternalairtemperatureriseoftheshellaccodingtothesizesandtheheatdissipationareaoftheshell，totainthe temperatureriseoftheairinsidetheshell.Thedataobtainedbycalculationwasusedtocalculatethe predictedtemperature riseanddrawthetempeatureriseurve，fingwellwiththeactualtemperaturerisecure，hicherifedthefeasibiltofthe algorithmfortemperaturerise predictionThealgorithm isexpectedtohelpenterprisedesignandteststationinspectors，and improve thequalitylevelandthe inspectioneffciencyofhigh-voltage&low-voltageelectricalapplianceindustry.

Keywords：low-voltage switchgearassemblies， temperaturerise，algorithm，effectiveheatdissipationareaofthe shell

0 引言

低压成套开关设备是输配电的基础设备，广泛应用于工业、农业、交通、城市社区等领域，设备发热对电网的安全运行具有重要影响。（剩余2669字）