功能介紹

按國標G/T20847.7電子式電壓互感器及G/T20847.8電子式電流互感器的規定，電子式互感器(ECT/EVT)有模擬量輸出和數字量輸出兩種。本校驗系統按照國標G/T20847.7/8電子式互感器標準和IEC61850通訊標準，基于虛擬儀器，可實現電子式互感器模擬和數字量輸出的比差、相差的測量，記錄，及電子式互感器的在線測量比對。為廣大電力試驗、計量、施工單位提供一種可移動的電子式互感器校驗裝置。

該校驗系統既可以完成電子式電流互感器的校驗也可以完成電子式電壓互感器的校驗。該系統分為電流標準通道，電壓標準通道，電流被測通道，電壓被測通道，校驗儀數據處理平臺。電流標準通道由升流器、標準電流互感器、標準轉換器組成。電流被測通道由升流器、被校互感器組成。校驗儀通過***器獲取標準電流傳感器和被校電流傳感器的電參量，并將這些電參量以標準格式上傳給計算機，計算機數據處理平臺將同一時刻的兩個信號進行比對處理，計算出被校電流傳感器的誤差情況，顯示并記錄測量結果。電壓標準通道由升壓器、標準電壓互感器、標準轉換器組成。電壓被測通道由升壓器、被校互感器組成。工作原理與電流校驗系統相同。

系統特點

●符合G/T 20847.7 /8、IEC61850-9-1標準；

●功能強大，適用于基于G/T 20847.7 /8的電子式電流、電壓互感器的模擬量輸出接口、數字量輸出接口的校驗。

●基于虛擬儀器的設計，操作簡單，配置靈活，系統穩定；

●準確度高、可靠性強。準確度等級達到0.05級，可用于對0.2級電子式電流互感器和0.2級電子式電壓互感器比對和校驗。

●采用高精度插值法進行同步，保證被校互感器和標準互感器***的數據以嚴格的時序同步，可靠性、實用性大為提高。

系統功能

●配置靈活，可根據不同的需要配置/電子式電流互感器校驗/電子式電壓互感器校驗；

●計算被校互感器與標準互感器電流/電壓有效值的比差、相差；

●顯示當前一次導線的電流、電壓、頻率等相關信息，便于綜合評估被校參數；

●顯示被校互感器輸出的實時波形，以及相關設置，并自動保存校驗數據，生成報表；

●靈活配置試驗參數，測試范圍，測試次數，采樣點數等相關信息。

性能指標

MainFeatures

According to the national standard G / T 20847.7 electronic voltage transformer and G / T 20847.8 electronic current transformer requirements, electronictransformer(ECT/EVT)hastwo kinds of analog output and digital output. The calibration system is based on the virtual instrument, which can realize the measurement of difference, differencebetweenanaloganddigitaloutput ofthe electronic transformer, according to GB / T20847.7 / 8 electronic transformer standard and IEC61850 communication standard. On - line Measurement ComparisonofTransformer.Forthemajority of powertesting, measurement, construction units to provide a removable electronic transformer calibration device.

The calibration system can complete the electronic current transformer calibration can also complete the electronic voltage transformer calibration. Thesystemisdividedintocurrentstandard channel, the voltage standard channel, the current measured channel, the voltage measured channel, calibrator data processing platform. The currentstandardchannelconsists ofabooster, astandard current transformer, and a standard converter. Current measured by the current channel channel, the school was composed of transformers. Thecalibratorobtainstheelectricparameters of thestandard current sensor and the calibrated current sensor through the collector, and uploads these electrical parameters to the computer in the standardformat.Thecomputerdataprocessing platformcompares the two signals at the same time, The school current sensor error situation, display and record the measurement results. Voltage standard channelfromthebooster,thestandard voltagetransformer, the standard converter components. Voltage measured by the booster channel, the school was composed of transformers. The operating principle is thesameasthecurrentcalibration system.

System Features

● comply with G / T 20847.7 / 8, IEC61850-9-1 standard;

● powerful, suitable for G / T 20847.7 / 8-based electronic current, voltage transformer analog output interface, digital output interface verification.

● Based on virtual instrument design, simple operation, flexible configuration, system stability;

● High accuracy and reliability. Accuracy level of 0.05, can be used for 0.2 grade electronic current transformer and 0.2 electronicvoltagetransformeralignmentandcalibration.

● Using high-precision interpolation method to synchronize to ensure that the school transformer and the standard transformer datacollectiontostricttimingsynchronization,reliability, practical greatly improved.

System functions

● Flexible configuration, can be configured according to different needs / electronic current transformer calibration / electronic voltagetransformercalibration;

● Calculate the difference between the transformer and the standard transformer current / voltage rms,

● Display current, voltage, frequency and other information of the current wire to facilitate the comprehensive assessment of the school parameters;

● Display the real-time waveform of the transformer output, and related settings, and automatically save the calibration data, generate reports;

● Flexible configuration of test parameters, test range, test frequency, sampling points and other relevant information.

Performance Index