功能介紹

按國標(biāo)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(guī)定，電子式互感器(ECT/EVT)有模擬量輸出和數(shù)字量輸出兩種。本校驗(yàn)系統(tǒng)按照國標(biāo)G/T20847.7/8電子式互感器標(biāo)準(zhǔn)和IEC61850通訊標(biāo)準(zhǔn)，基于虛擬儀器，可實(shí)現(xiàn)電子式互感器模擬和數(shù)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(yàn)、計(jì)量、施工單位提供一種可移動(dòng)的電子式互感器校驗(yàn)裝置。

該校驗(yàn)系統(tǒng)既可以完成電子式電流互感器的校驗(yàn)也可以完成電子式電壓互感器的校驗(yàn)。該系統(tǒng)分為電流標(biāo)準(zhǔn)通道，電壓標(biāo)準(zhǔn)通道，電流被測通道，電壓被測通道，校驗(yàn)儀數(shù)據(jù)處理平臺。電流標(biāo)準(zhǔn)通道由升流器、標(biāo)準(zhǔn)電流互感器、標(biāo)準(zhǔn)轉(zhuǎn)換器組成。電流被測通道由升流器、被校互感器組成。校驗(yàn)儀通過***器獲取標(biāo)準(zhǔn)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(biāo)準(zhǔn)格式上傳給計(jì)算機(jī)，計(jì)算機(jī)數(shù)據(jù)處理平臺將同一時(shí)刻的兩個(gè)信號進(jìn)行比對處理，計(jì)算出被校電流傳感器的誤差情況，顯示并記錄測量結(jié)果。電壓標(biāo)準(zhǔn)通道由升壓器、標(biāo)準(zhǔn)電壓互感器、標(biāo)準(zhǔn)轉(zhuǎn)換器組成。電壓被測通道由升壓器、被?；ジ衅鹘M成。工作原理與電流校驗(yàn)系統(tǒng)相同。

系統(tǒng)特點(diǎn)

●符合G/T 20847.7 /8、IEC61850-9-1標(biāo)準(zhǔn)；

●功能強(qiáng)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(shù)字量輸出接口的校驗(yàn)。

●基于虛擬儀器的設(shè)計(jì)，操作簡單，配置靈活，系統(tǒng)穩(wěn)定；

●準(zhǔn)確度高、可靠性強(qiáng)。準(zhǔn)確度等級達(dá)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(yàn)。

●采用高精度插值法進(jìn)行同步，保證被?；ジ衅骱蜆?biāo)準(zhǔn)互感器***的數(shù)據(jù)以嚴(yán)格的時(shí)序同步，可靠性、實(shí)用性大為提高。

系統(tǒng)功能

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

●計(jì)算被?；ジ衅髋c標(biāo)準(zhǔn)互感器電流/電壓有效值的比差、相差；

●顯示當(dāng)前一次導(dǎo)線的電流、電壓、頻率等相關(guān)信息，便于綜合評估被校參數(shù)；

●顯示被?；ジ衅鬏敵龅膶?shí)時(shí)波形，以及相關(guān)設(shè)置，并自動(dòng)保存校驗(yàn)數(shù)據(jù)，生成報(bào)表；

●靈活配置試驗(yàn)參數(shù)，測試范圍，測試次數(shù)，采樣點(diǎn)數(shù)等相關(guān)信息。

性能指標(biāo)

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