CN104597424A - Verification platform and verification method for electric energy measurement of optical transformer - Google Patents
Verification platform and verification method for electric energy measurement of optical transformer Download PDFInfo
- Publication number
- CN104597424A CN104597424A CN201510006666.2A CN201510006666A CN104597424A CN 104597424 A CN104597424 A CN 104597424A CN 201510006666 A CN201510006666 A CN 201510006666A CN 104597424 A CN104597424 A CN 104597424A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- transformer
- optical
- digital
- conversion device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Testing Relating To Insulation (AREA)
Abstract
本发明涉及光学互感器电能计量验证平台和方法，该平台包括标准电压互感器、标准电流互感器、待测的光学互感器、模拟电能计量装置、AD转换装置、第一合并单元、第一数字化电能计量装置、第二合并单元、第二数字化电能计量装置和上位机，标准电压互感器和标准电流互感器的输出端均连接模拟电能计量装置和AD转换装置的输入端，第一合并单元的输入端与AD转换装置的输出端相连，第一合并单元的输出端连接第一数字化电能计量装置，光学互感器和AD转换装置均连接第二合并单元，第二合并单元连接第二数字化电能计量装置，模拟电能计量装置、第一和第二数字化电能计量装置均与上位机相连。该平台验证精度高，为光学互感器在电能计量的实施应用提供了保证。
The invention relates to an optical transformer electric energy measurement verification platform and method, the platform includes a standard voltage transformer, a standard current transformer, an optical transformer to be tested, an analog electric energy measurement device, an AD conversion device, a first merging unit, a first digital The electric energy metering device, the second merging unit, the second digital electric energy metering device and the host computer, the output ends of the standard voltage transformer and the standard current transformer are all connected to the input ends of the analog electric energy metering device and the AD conversion device, the first merging unit The input end is connected to the output end of the AD conversion device, the output end of the first merging unit is connected to the first digital electric energy metering device, the optical transformer and the AD conversion device are both connected to the second merging unit, and the second merging unit is connected to the second digital electric energy metering device, the analog electric energy metering device, the first and the second digitized electric energy metering devices are all connected with the host computer. The verification accuracy of this platform is high, which provides a guarantee for the implementation and application of optical transformers in electric energy metering.
Description
技术领域technical field
本发明涉及一种电能计量技术领域，特别是一种光学互感器电能计量验证平台和验证方法。The invention relates to the technical field of electric energy measurement, in particular to an optical transformer electric energy measurement verification platform and verification method.
背景技术Background technique
在传统的电能计量系统的结构中，使用的互感器均为基于电磁感应原理的模拟传感器，即采用电磁式互感器，如图1所示的结构采用电磁式电流互感器和电磁式电压互感器，从待测线路设备感应出与一次电流和电压成比例的小电流、小电压，进入模拟电能计量装置进行运算，计算出电能值。其缺点是：随着电压等级的提高，在电能计量使用过程中容易出现二次开路危险、易受电磁干扰影响、磁饱和带来较大误差、动态范围小等安全问题。In the structure of the traditional electric energy metering system, the transformers used are all analog sensors based on the principle of electromagnetic induction, that is, electromagnetic transformers are used. The structure shown in Figure 1 uses electromagnetic current transformers and electromagnetic voltage transformers. The small current and small voltage proportional to the primary current and voltage are induced from the line equipment to be tested, and enter the analog electric energy metering device for calculation to calculate the electric energy value. Its disadvantages are: as the voltage level increases, it is prone to safety problems such as secondary open circuit danger, susceptible to electromagnetic interference, large error caused by magnetic saturation, and small dynamic range during the use of electric energy measurement.
光学互感器能解决以上问题，光学互感器一次侧通常采用无源工作方式，与二次侧形成光学隔离，故有效避免了有源互感器存在的电磁干扰的问题；而且安全性好，彻底避免了传统互感器存在的二次开路、油气爆炸等危险；无论模拟互感器还是光学互感器，在变电站计量应用中均要求误差不超过0.2％，在目前的工程应用中光学电流互感器和光学电压互感器已经都达到了0.2％的精度要求，在理论上完全满足电能计量对互感器的要求，但目前还没有在实际运行中验证。The optical transformer can solve the above problems. The primary side of the optical transformer usually adopts a passive working mode to form optical isolation from the secondary side, so it effectively avoids the problem of electromagnetic interference in the active transformer; and it is safe and completely avoids Eliminates the dangers of secondary open circuit and oil gas explosion in traditional transformers; whether it is an analog transformer or an optical transformer, the error is required to be no more than 0.2% in substation metering applications. In current engineering applications, optical current transformers and optical voltage transformers The transformers have all reached the accuracy requirement of 0.2%, which fully meets the requirements of electric energy metering for transformers in theory, but it has not been verified in actual operation yet.
发明内容Contents of the invention
本发明针对传统的电磁式互感器在电能计量使用过程中容易出现二次开路危险、易受电磁干扰影响而光学互感器在电能计量使用中缺乏验证的问题，提供一种光学互感器电能计量验证平台，能够验证光学互感器是否能够应用于电能计量，且验证精度高，为光学互感器在电能计量的实施应用提供了保证。本发明还涉及一种光学互感器电能计量验证方法。The invention aims at the problem that the traditional electromagnetic transformer is prone to secondary open circuit danger and susceptible to electromagnetic interference during the use of electric energy measurement, and the optical transformer lacks verification in the use of electric energy measurement, and provides an optical transformer electric energy measurement verification The platform can verify whether the optical transformer can be applied to electric energy metering, and the verification accuracy is high, which provides a guarantee for the implementation and application of optical transformers in electric energy metering. The invention also relates to a verification method for electric energy measurement of an optical transformer.
本发明的技术方案如下：Technical scheme of the present invention is as follows:
一种光学互感器电能计量验证平台，其特征在于，包括采集功率源输出的电压信息的标准电压互感器、采集功率源输出的电流信息的标准电流互感器以及采集功率源输出信息的待测的光学互感器，还包括模拟电能计量装置、AD转换装置、第一合并单元、第一数字化电能计量装置、第二合并单元、第二数字化电能计量装置和上位机，所述标准电压互感器和标准电流互感器的输出端均连接模拟电能计量装置和AD转换装置的输入端，所述第一合并单元的输入端与AD转换装置的输出端相连，所述第一合并单元的输出端连接第一数字化电能计量装置，所述光学互感器以及AD转换装置的输出端均连接第二合并单元的输入端，所述第二合并单元的输出端连接第二数字化电能计量装置，所述模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置均与上位机相连。An optical transformer electric energy measurement and verification platform is characterized in that it includes a standard voltage transformer for collecting voltage information output by a power source, a standard current transformer for collecting current information output by a power source, and a to-be-tested transformer for collecting output information of a power source The optical transformer also includes an analog electric energy metering device, an AD conversion device, a first merging unit, a first digital electric energy metering device, a second merging unit, a second digital electric energy metering device and a host computer, the standard voltage transformer and the standard The output ends of the current transformers are all connected to the analog electric energy metering device and the input end of the AD conversion device, the input end of the first merging unit is connected to the output end of the AD conversion device, and the output end of the first merging unit is connected to the first A digital electric energy metering device, the output ends of the optical transformer and the AD conversion device are connected to the input end of the second merging unit, the output end of the second merging unit is connected to the second digital electric energy metering device, and the analog electric energy metering device . Both the first digital electric energy metering device and the second digital electric energy metering device are connected to the host computer.
所述光学互感器为采集功率源输出的电流信息的光学电流互感器，所述AD转换装置包括第一AD转换装置和第二AD转换装置，所述标准电流互感器的输出端连接第一AD转换装置的输入端，标准电压互感器的输出端连接第二AD转换装置的输入端，所述第一AD转换装置和第二AD转换装置的输出端均连接第一合并单元的输入端，所述第二AD转换装置的输出端还连接第二合并单元的输入端。The optical transformer is an optical current transformer that collects current information output by a power source, and the AD conversion device includes a first AD conversion device and a second AD conversion device, and the output end of the standard current transformer is connected to the first AD conversion device. The input end of the conversion device, the output end of the standard voltage transformer is connected to the input end of the second AD conversion device, and the output ends of the first AD conversion device and the second AD conversion device are connected to the input end of the first merging unit, so The output terminal of the second AD conversion device is also connected to the input terminal of the second merging unit.
所述光学互感器为采集功率源输出的电压信息的光学电压互感器，所述AD转换装置包括第一AD转换装置和第二AD转换装置，所述标准电流互感器的输出端连接第一AD转换装置的输入端，标准电压互感器的输出端连接第二AD转换装置的输入端，所述第一AD转换装置和第二AD转换装置的输出端均连接第一合并单元的输入端，所述第一AD转换装置的输出端还连接第二合并单元的输入端。The optical transformer is an optical voltage transformer that collects voltage information output by a power source, and the AD conversion device includes a first AD conversion device and a second AD conversion device, and the output end of the standard current transformer is connected to the first AD conversion device. The input end of the conversion device, the output end of the standard voltage transformer is connected to the input end of the second AD conversion device, and the output ends of the first AD conversion device and the second AD conversion device are connected to the input end of the first merging unit, so The output terminal of the first AD conversion device is also connected to the input terminal of the second merging unit.
还包括采集功率源输出的电压信息的待测的光学电压互感器，以及依次与光学电压互感器连接的第三合并单元和第三数字化电能计量装置，所述光学电流互感器的输出端还连接第三合并单元的输入端，所述第三数字化电能计量装置与上位机相连。It also includes the optical voltage transformer to be tested for collecting the voltage information output by the power source, and the third merging unit and the third digital electric energy metering device connected to the optical voltage transformer in turn, and the output end of the optical current transformer is also connected to The input terminal of the third merging unit, the third digital electric energy metering device is connected with the host computer.
还包括采集功率源输出的电流信息的待测的光学电流互感器，以及依次与光学电流互感器连接的第四合并单元和第四数字化电能计量装置，所述光学电压互感器的输出端还连接第四合并单元的输入端，所述第四数字化电能计量装置与上位机相连。It also includes the optical current transformer to be tested for collecting the current information output by the power source, and the fourth merging unit and the fourth digital electric energy metering device connected to the optical current transformer in turn, and the output terminal of the optical voltage transformer is also connected to The input terminal of the fourth merging unit, the fourth digital electric energy metering device is connected with the upper computer.
还包括GPS时钟模块，所述第一合并单元和第二合并单元均连接GPS时钟模块以接收GPS时钟模块发出的秒脉冲信号或B码信号。It also includes a GPS clock module, the first merging unit and the second merging unit are both connected to the GPS clock module to receive the second pulse signal or the B code signal sent by the GPS clock module.
还包括GPS时钟模块，所述第一合并单元、第二合并单元和第三合并单元均连接GPS时钟模块以接收GPS时钟模块发出的秒脉冲信号或B码信号。It also includes a GPS clock module, the first merging unit, the second merging unit and the third merging unit are all connected to the GPS clock module to receive the second pulse signal or the B code signal sent by the GPS clock module.
还包括GPS时钟模块，所述第一合并单元、第二合并单元和第四合并单元均连接GPS时钟模块以接收GPS时钟模块发出的秒脉冲信号或B码信号。It also includes a GPS clock module, the first merging unit, the second merging unit and the fourth merging unit are all connected to the GPS clock module to receive the second pulse signal or the B code signal sent by the GPS clock module.
一种光学互感器电能计量验证方法，其特征在于，通过标准电压互感器和标准电流互感器采集功率源的电压信息和电流信息后分别输出模拟小电压信号和模拟小电流信号，将模拟小电压信号和模拟小电流信号输出至模拟电能计量装置；同时模拟小电压信号和模拟小电流信号均通过AD转换装置进行AD转换从而分别转换为数字电压值和数字电流值，由第一合并单元将数字电压值和数字电流值进行组帧并按照标准协议发送到第一数字化电能计量装置；将待测的光学互感器采集功率源的相应信息后输出数字值，由第二合并单元将该数字值以及AD转换装置输出的与光学互感器输出的数字值相配的数字电压值或数字电流值进行组帧，并按照标准协议发送到第二数字化电能计量装置；然后由上位机分别接收模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置的三个电能值，并进行实时比较，通过误差计算判断待测的光学互感器输出的计量数据用于电能计量是否可行。A method for verifying electric energy measurement of an optical transformer, characterized in that, after collecting voltage information and current information of a power source through a standard voltage transformer and a standard current transformer, an analog small voltage signal and an analog small current signal are output respectively, and the simulated small voltage The signal and the analog small current signal are output to the analog electric energy metering device; at the same time, the analog small voltage signal and the analog small current signal are converted into digital voltage value and digital current value respectively through the AD conversion device, and the digital voltage value is converted into digital current value by the first merging unit. The voltage value and the digital current value are framed and sent to the first digital electric energy metering device according to the standard protocol; the optical transformer to be tested outputs the digital value after collecting the corresponding information of the power source, and the digital value and the digital value are output by the second merging unit The digital voltage value or digital current value output by the AD conversion device that matches the digital value output by the optical transformer is framed and sent to the second digital electric energy metering device according to the standard protocol; then the host computer receives the analog electric energy metering device, The three electric energy values of the first digital electric energy metering device and the second digital electric energy metering device are compared in real time, and the error calculation is used to judge whether the metering data output by the optical transformer to be tested is feasible for electric energy metering.
在待测的光学互感器为光学电流互感器时，光学电流互感器采集功率源输出的电流信息后的输出数字电流值以及AD转换装置输出的数字电压值均进入第二合并单元，由第二合并单元将数字电流值和数字电压值进行组帧，并按照标准协议发送到第二数字化电能计量装置，上位机通过误差计算判断该光学电流互感器输出的计量数据用于电能计量是否可行；When the optical transformer to be tested is an optical current transformer, the output digital current value after the optical current transformer collects the current information output by the power source and the digital voltage value output by the AD conversion device enter the second merging unit, and the second The merging unit frames the digital current value and the digital voltage value, and sends them to the second digital electric energy metering device according to the standard protocol, and the host computer judges whether the metering data output by the optical current transformer is feasible for electric energy metering through error calculation;
在待测的光学互感器为光学电压互感器时，光学电压互感器采集功率源输出的电压信息后输出的数字电压值以及AD转换装置输出的数字电流值均进入第二合并单元，由第二合并单元将数字电压值和数字电流值进行组帧，并按照标准协议发送到第二数字化电能计量装置，上位机通过误差计算判断该光学电压互感器输出的计量数据用于电能计量是否可行；When the optical transformer to be tested is an optical voltage transformer, the digital voltage value output by the optical voltage transformer after collecting the voltage information output by the power source and the digital current value output by the AD conversion device all enter the second merging unit, and the second The merging unit frames the digital voltage value and the digital current value, and sends them to the second digital electric energy metering device according to the standard protocol, and the host computer judges whether the metering data output by the optical voltage transformer is feasible for electric energy metering through error calculation;
第一合并单元和第二合并单元均接收GPS时钟发出的秒脉冲信号或B码信号使得标准电流互感器和标准电压互感器以及待测的光学互感器的数据同步。Both the first merging unit and the second merging unit receive the second pulse signal or the B code signal sent by the GPS clock to synchronize the data of the standard current transformer, the standard voltage transformer and the optical transformer to be tested.
本发明的技术效果如下：Technical effect of the present invention is as follows:
本发明提供的光学互感器电能计量验证平台，设置标准电压互感器、标准电流互感器以及待测的光学互感器，还设置模拟电能计量装置、AD转换装置、第一合并单元、第一数字化电能计量装置、第二合并单元、第二数字化电能计量装置和上位机，标准电压互感器和标准电流互感器分别采集功率源输出的电压信号和电流信号并输出模拟小电压信号和模拟小电流信号至模拟电能计量装置，模拟电能计量装置显示电能值；同时模拟小电压信号和小电流信号均通过AD转换装置进行AD转换从而分别转换为数字电压值和数字电流值进入第一合并单元，第一合并单元将数字电压值和数字电流值进行组帧并按照标准协议发送到第一数字化电能计量装置，第一数字化电能计量装置显示电能值；待测的光学互感器采集功率源的输出信息并输出数字值送入第二合并单元，第二合并单元将该数字值以及AD转换装置输出的与光学互感器输出的数字值相配的数字电压值或数字电流值进行组帧，并按照标准协议发送到第二数字化电能计量装置，第二数字化电能计量装置显示电能值，最终上位机分别接收模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置的三个电能值，由上位机进行实时比较，通过误差计算判断待测的光学互感器输出的计量数据用于电能计量是否可行。该平台利用了公认的标准电压互感器和标准电流互感器的模拟输出结果和数字输出结果并配合待测的光学互感器的数字化的电能计量输出结果进行比对，比对的每个值均包括电流值和电压值，如果光学互感器的电能计量输出结果与标准互感器电能计量结果之间的误差小于目前模拟电能计量的误差，则可验证光学互感器完全可应用于电能计量，通过设置本发明的验证平台，验证光学互感器是否能够应用于电能计量，避免了传统的电磁式互感器在电能计量使用过程中容易出现二次开路危险、易受电磁干扰影响的安全问题，还解决了目前光学互感器在电能计量使用中缺乏验证的问题，并且结构简单，应用灵活，验证精度高，为光学互感器在电能计量的实施应用提供了保证。The optical transformer electric energy measurement and verification platform provided by the present invention is provided with standard voltage transformers, standard current transformers and optical transformers to be tested, and is also provided with analog electric energy metering devices, AD conversion devices, first merging units, and first digital electric energy The metering device, the second merging unit, the second digital electric energy metering device and the upper computer, the standard voltage transformer and the standard current transformer respectively collect the voltage signal and current signal output by the power source and output the analog small voltage signal and the analog small current signal to Analog electric energy metering device, the analog electric energy metering device displays the electric energy value; at the same time, the analog small voltage signal and small current signal are converted into digital voltage value and digital current value respectively by AD conversion device and enter the first merging unit, the first merging unit The unit frames the digital voltage value and digital current value and sends them to the first digital electric energy metering device according to the standard protocol, and the first digital electric energy metering device displays the electric energy value; the optical transformer to be tested collects the output information of the power source and outputs digital The value is sent to the second merging unit, and the second merging unit frames the digital value and the digital voltage value or digital current value output by the AD conversion device that matches the digital value output by the optical transformer, and sends it to the second merging unit according to the standard protocol. Two digital electric energy metering devices, the second digital electric energy metering device displays the electric energy value, and finally the upper computer respectively receives the three electric energy values of the analog electric energy metering device, the first digital electric energy metering device and the second digital electric energy metering device, and the upper computer performs real-time By comparison, it is judged by error calculation whether the metering data output by the optical transformer to be tested is used for electric energy metering. The platform utilizes the analog output results and digital output results of recognized standard voltage transformers and standard current transformers and compares them with the digitalized electric energy measurement output results of the optical transformers to be tested. Each value of the comparison includes Current value and voltage value, if the error between the electric energy measurement output result of the optical transformer and the electric energy measurement result of the standard transformer is smaller than the error of the current analog electric energy measurement, it can be verified that the optical transformer can be completely applied to electric energy measurement. By setting this The invented verification platform verifies whether the optical transformer can be applied to electric energy metering, avoiding the safety problems that the traditional electromagnetic transformer is prone to secondary open circuit danger and susceptible to electromagnetic interference during the use of electric energy metering, and also solves the current The lack of verification of optical transformers in the use of electric energy metering, and the simple structure, flexible application, and high verification accuracy provide a guarantee for the implementation and application of optical transformers in electric energy metering.
AD转换装置也可以是一个包含对模拟小电压信号和模拟小电流信号进行模数转换的装置，也可以采用第一AD转换装置和第二AD转换装置来替代，第一AD转换装置进行模拟小电流信号的模数转换从而得到数字电流值，第二AD转换装置进行模拟小电压信号的模数转换从而得到数字电压值。在待测的光学互感器为光学电流互感器时，光学电流互感器采集功率源输出的电流信息后输出数字电流值进入第二合并单元，同时第二AD转换装置得到的数字电压值也进入第二合并单元，第二合并单元将数字电流值和数字电压值进行组帧，并按照标准协议发送到第二数字化电能计量装置，上位机通过误差计算判断该光学电流互感器输出的计量数据用于电能计量是否可行。The AD conversion device can also be a device that includes analog-to-digital conversion of the analog small voltage signal and the analog small current signal, and can also be replaced by a first AD conversion device and a second AD conversion device. The first AD conversion device performs analog small The analog-to-digital conversion of the current signal obtains a digital current value, and the second AD conversion device performs analog-to-digital conversion of the analog small voltage signal to obtain a digital voltage value. When the optical transformer to be tested is an optical current transformer, the optical current transformer collects the current information output by the power source and then outputs a digital current value into the second merging unit, and at the same time, the digital voltage value obtained by the second AD conversion device also enters the first Two merging units, the second merging unit frames the digital current value and digital voltage value, and sends them to the second digital electric energy metering device according to the standard protocol, and the upper computer judges the metering data output by the optical current transformer through error calculation. Whether energy metering is feasible.
通过本发明的验证平台在该光学电流互感器电能计量验证以后，可以进一步进行光学电压互感器的电能计量验证，光学电流互感器可以作为光学电压互感器电能计量的基础。设置与光学电压互感器连接的第三合并单元和第三数字化电能计量装置，待测的光学电压互感器采集功率源输出的电压信息后输出数字电压值进入第三合并单元，已经验证后的光学电流互感器输出的数字电流值可以输入至第三合并单元，第三合并单元将数字电压值和数字电流值进行组帧，并按照标准协议发送到第三数字化电能计量装置，上位机接收模拟电能计量装置以及第一、第二和第三数字化电能计量装置的四个电能值，由上位机进行实时比较，通过误差计算判断待测的光学电压互感器输出的计量数据用于电能计量是否可行。Through the verification platform of the present invention, after the electric energy measurement verification of the optical current transformer, the electric energy measurement verification of the optical voltage transformer can be further performed, and the optical current transformer can be used as the basis for the electric energy measurement of the optical voltage transformer. Set up the third merging unit and the third digital electric energy metering device connected to the optical voltage transformer. The optical voltage transformer to be tested collects the voltage information output by the power source and outputs a digital voltage value to enter the third merging unit. The verified optical voltage transformer The digital current value output by the current transformer can be input to the third merging unit, the third merging unit frames the digital voltage value and digital current value, and sends it to the third digital electric energy metering device according to the standard protocol, and the host computer receives the analog electric energy The four electric energy values of the metering device and the first, second and third digital electric energy metering devices are compared in real time by the host computer, and the error calculation is used to judge whether the metering data output by the optical voltage transformer to be tested is feasible for electric energy metering.
同理，本发明的光学互感器电能计量验证平台也可以完成待测的光学互感器为光学电压互感器时准确的电能计量验证，并在验证光学电压互感器后，进一步在该结构的基础上，增加待测的光学电流互感器以及第四合并单元和第四数字化电能计量装置，进而完成光学电流互感器的电能计量验证。In the same way, the optical transformer electric energy measurement verification platform of the present invention can also complete the accurate electric energy measurement verification when the optical transformer to be tested is an optical voltage transformer, and after verifying the optical voltage transformer, further on the basis of the structure , adding the optical current transformer to be tested, the fourth merging unit and the fourth digital electric energy metering device, and then completing the electric energy metering verification of the optical current transformer.
本发明涉及的光学互感器电能计量验证方法，与上述的光学互感器电能计量验证平台相对应，能够最终判断出待测的光学互感器输出的计量数据用于电能计量是否可行，完成光学互感器电能计量的准确验证，解决了目前光学互感器在电能计量使用中缺乏验证的问题。The optical transformer electric energy metering verification method involved in the present invention corresponds to the above-mentioned optical transformer electric energy metering verification platform, and can finally judge whether the metering data output by the optical transformer to be tested is feasible for electric energy metering, and complete the optical transformer The accurate verification of electric energy measurement solves the problem of lack of verification of optical transformers in the use of electric energy measurement.
附图说明Description of drawings
图1为传统的电能计量系统的结构示意图。FIG. 1 is a schematic structural diagram of a traditional electric energy metering system.
图2为本发明光学互感器电能计量验证平台的第一种优选结构示意图。Fig. 2 is a schematic diagram of the first preferred structure of the electric energy measurement and verification platform for the optical transformer of the present invention.
图3为本发明光学互感器电能计量验证平台的第二种优选结构示意图。Fig. 3 is a schematic diagram of the second preferred structure of the electric energy measurement and verification platform for the optical transformer of the present invention.
图4为本发明光学互感器电能计量验证平台的第三种优选结构示意图。Fig. 4 is a schematic diagram of the third preferred structure of the electric energy measurement and verification platform for the optical transformer of the present invention.
图5为本发明光学互感器电能计量验证平台的第四种优选结构示意图。Fig. 5 is a schematic diagram of a fourth preferred structure of an optical transformer electrical energy measurement verification platform of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明进行说明。The present invention will be described below in conjunction with the accompanying drawings.
本发明涉及一种光学互感器电能计量验证平台，可进行光学互感器如光学电流互感器和光学电压互感器的电能计量验证。图2为本发明验证平台的第一种优选结构示意图，也可以理解为是光学电流互感器电能计量验证平台的优选结构示意图。该验证平台包括采集功率源输出的电压信息的标准电压互感器、采集功率源输出的电流信息的标准电流互感器以及采集功率源输出的电流信息的待测的光学电流互感器，还包括模拟电能计量装置、AD转换装置、第一合并单元、第一数字化电能计量装置、第二合并单元、第二数字化电能计量装置和上位机，AD转换装置包括第一AD转换装置和第二AD转换装置，标准电流互感器的输出端连接模拟电能计量装置和第一AD转换装置的输入端，标准电压互感器的输出端连接模拟电能计量装置和第二AD转换装置的输入端，第一AD转换装置和第二AD转换装置的输出端均连接第一合并单元的输入端，第一合并单元的输出端连接第一数字化电能计量装置，光学电流互感器以及第二AD转换装置的输出端均连接第二合并单元的输入端，第二合并单元的输出端连接第二数字化电能计量装置，模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置均与上位机相连。The invention relates to an electric energy measurement and verification platform for optical transformers, which can perform electric energy measurement and verification of optical transformers such as optical current transformers and optical voltage transformers. Fig. 2 is a schematic diagram of the first preferred structure of the verification platform of the present invention, which can also be understood as a schematic diagram of the preferred structure of the verification platform for electric energy measurement of optical current transformers. The verification platform includes a standard voltage transformer for collecting voltage information output by the power source, a standard current transformer for collecting current information output by the power source, and an optical current transformer to be tested for collecting current information output by the power source. A metering device, an AD conversion device, a first merging unit, a first digital electric energy metering device, a second merging unit, a second digital electric energy metering device and a host computer, the AD conversion device includes a first AD conversion device and a second AD conversion device, The output end of the standard current transformer is connected to the input end of the analog electric energy metering device and the first AD conversion device, the output end of the standard voltage transformer is connected to the input end of the analog electric energy metering device and the second AD conversion device, and the first AD conversion device and The output ends of the second AD conversion device are all connected to the input ends of the first merging unit, the output ends of the first merging unit are connected to the first digital electric energy metering device, and the output ends of the optical current transformer and the second AD conversion device are connected to the second The input end of the merging unit and the output end of the second merging unit are connected to the second digital electric energy metering device, and the analog electric energy metering device, the first digital electric energy metering device and the second digital electric energy metering device are all connected to the host computer.
图2所示实施例中，功率源输出电流和电压信号，标准电流互感器采集电流信息输出模拟小电流信号Ia通过电缆接入模拟电能计量装置；标准电压互感器采集电压信息输出模拟小电压信号U通过电缆接入模拟电能计量装置，模拟电能计量装置显示电能值Ea。标准电流互感器和电压互感器由于是校验设备，其精度要求比实际应用的互感器精度等级高，故均为高精度标准互感器，精度要优于0.1％(或者说是计量误差小于等于0.1％)。In the embodiment shown in Figure 2, the power source outputs current and voltage signals, and the standard current transformer collects current information and outputs an analog small current signal Ia through a cable to access the analog electric energy metering device; the standard voltage transformer collects voltage information and outputs an analog small voltage signal U is connected to the analog electric energy metering device through a cable, and the analog electric energy metering device displays the electric energy value Ea. Since standard current transformers and voltage transformers are calibration equipment, their accuracy requirements are higher than those of practical transformers, so they are all high-precision standard transformers, and their accuracy is better than 0.1% (or the measurement error is less than or equal to 0.1%).
标准电流互感器采集电流信息输出模拟小电流信号Ia通过电缆接入第一AD转换装置，第一AD转换装置将模拟小电流信号Ia转换成数字电流值Ib，通过光缆送入第一合并单元；标准电压互感器采集电压信息输出模拟小电压信号U通过电缆接入第二AD转换装置，第二AD转换装置将模拟电压信号U转换成数字电压值Ud1，通过光缆送入第一合并单元；第一合并单元将数字电压值Ud1和数字电流值Ib进行组帧，按照标准协议发送到第一数字化电能计量装置，第一数字化电能计量装置显示电能值Eb。优选采用的第一AD转换装置和第二AD转换装置的精度优于0.05％，第二AD转换装置的模数转换输出口不少于两个；这两个AD转换装置也可以用一个包含模拟电压和模拟电流模数转换的AD转换装置代替，则其模数转换输出口不少于三个。各合并单元可采用基于FPGA技术的硬件模块实现，合并单元主要包括：数据采样模块、采样数据处理模块、数据输出模块，另外还可包括同步采样脉冲系列发生模块。合并单元是现有的成熟的硬件产品。The standard current transformer collects current information and outputs the analog small current signal Ia through the cable to the first AD conversion device, and the first AD conversion device converts the analog small current signal Ia into a digital current value Ib, and sends it to the first merging unit through the optical cable; The standard voltage transformer collects the voltage information and outputs the analog small voltage signal U through the cable to the second AD conversion device, and the second AD conversion device converts the analog voltage signal U into a digital voltage value Ud1, and sends it to the first merging unit through the optical cable; the second AD conversion device A merging unit frames the digital voltage value Ud1 and the digital current value Ib, and sends them to the first digital electric energy metering device according to a standard protocol, and the first digital electric energy metering device displays the electric energy value Eb. The accuracy of the first AD conversion device and the second AD conversion device preferably adopted is better than 0.05%, and the analog-to-digital conversion output ports of the second AD conversion device are not less than two; If the voltage and analog current analog-to-digital conversion is replaced by an AD conversion device, then its analog-to-digital conversion output port is not less than three. Each merging unit can be realized by a hardware module based on FPGA technology. The merging unit mainly includes: a data sampling module, a sampling data processing module, a data output module, and also includes a synchronous sampling pulse series generation module. Merging units are existing, mature hardware products.
光学电流互感器采集电流信息输出数字电流值Ic通过传输光缆送入第二合并单元；标准电压互感器采集电压信息输出模拟小电压信号U通过电缆接入第二AD转换装置，第二AD转换装置将模拟小电压信号U转换成数字电压值Ud2，通过通信光缆送入第二合并单元；第二合并单元将数字电压值Ud2和数字电流值Ic进行组帧，按照标准协议发送到第二数字化电能计量装置，第二数字化电能计量装置输出电能值Ec。各数字化电能计量装置通信协议优选接收IEC61850-9-2协议。The optical current transformer collects the current information and outputs the digital current value Ic and sends it to the second merging unit through the transmission optical cable; the standard voltage transformer collects the voltage information and outputs the analog small voltage signal U through the cable to the second AD conversion device, and the second AD conversion device Convert the analog small voltage signal U into a digital voltage value Ud2, and send it to the second merging unit through the communication optical cable; the second merging unit frames the digital voltage value Ud2 and the digital current value Ic, and sends it to the second digital electric energy according to the standard protocol The metering device, the second digitized electric energy metering device outputs the electric energy value Ec. The communication protocol of each digital electric energy metering device preferably receives the IEC61850-9-2 protocol.
为了保证数据采样同步，即标准电流互感器、标准电压互感器和光学电流互感器的测量数据是同一时刻的，该验证平台还设置GPS时钟模块，第一合并单元和第二合并单元均连接GPS时钟模块以接收GPS时钟模块发出的PPS秒脉冲信号或B码信号。In order to ensure the synchronization of data sampling, that is, the measurement data of standard current transformers, standard voltage transformers and optical current transformers are at the same time, the verification platform is also equipped with a GPS clock module, and the first merging unit and the second merging unit are connected to GPS The clock module is used to receive the PPS second pulse signal or B code signal sent by the GPS clock module.
电能计量单位时间为T(通常T>10分钟)。在t1时刻三个电能表(模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置)的输出值为Ea(t1),Eb(t1),Ec(t1)；持续功率输出超过T时间后为t2时刻，记下t2时刻三个电能表输出值Ea(t2),Eb(t2),Ec(t2)；则t1～t2之间的电能值输出为Ea＝Ea(t2)-Ea(t1),Eb＝Eb(t2)-Eb(t1),Ec＝Ec(t2)-Eb(t1)。三个电能表的输出结果附带时标或计数器信息，通过数据线下载到上位机，在上位机上进行实时比较，从而保证做对比的电能值是同一时间段的数据。如图2所示，Ea与Eb之间仅有模数转换带来的误差。当|Ec-Ea|<0.7％Ea或|Ec-Eb|<0.7％Eb时，表明光学电流互感器输出的计量数据用于电能计量是可行的。The unit time of electric energy measurement is T (usually T>10 minutes). At time t1, the output values of the three electric energy meters (the analog electric energy metering device, the first digital electric energy metering device and the second digital electric energy metering device) are Ea(t1), Eb(t1), Ec(t1); the continuous power output exceeds After the T time is the time t2, record the output values of the three electric energy meters Ea(t2), Eb(t2), Ec(t2) at the time t2; then the output of the electric energy value between t1 and t2 is Ea=Ea(t2)- Ea(t1), Eb=Eb(t2)-Eb(t1), Ec=Ec(t2)-Eb(t1). The output results of the three watt-hour meters are attached with time scale or counter information, downloaded to the host computer through the data line, and compared in real time on the host computer, so as to ensure that the compared electric energy values are the data of the same time period. As shown in Figure 2, there is only an error caused by analog-to-digital conversion between Ea and Eb. When |Ec-Ea|<0.7%Ea or |Ec-Eb|<0.7%Eb, it indicates that the measurement data output by the optical current transformer is feasible for electric energy measurement.
本发明的技术方案利用了目前较为公认的模拟电能计量的输出结果和数字化电能计量的输出结果进行对比。如果光学互感器电能计量输出结果与标准互感器电能计量结果之间的差别小于0.7％(目前模拟电能计量的误差为0.7％，包含模拟电流互感器0.2％，模拟电压互感器0.2％，电缆传输损耗0.3％)，则可验证光学互感器完全可应用于电能计量。The technical scheme of the present invention utilizes the comparison between the output result of analog electric energy metering and the output result of digital electric energy metering which are relatively recognized at present. If the difference between the output result of optical transformer electric energy measurement and standard transformer electric energy measurement is less than 0.7% (currently the error of analog electric energy measurement is 0.7%, including analog current transformer 0.2%, analog voltage transformer 0.2%, cable transmission loss of 0.3%), it can be verified that the optical transformer can be applied to electric energy measurement.
图3为本发明验证平台的第二种优选结构示意图，也可以理解为是光学电压互感器电能计量验证平台的优选结构示意图。该验证平台包括采集功率源输出的电压信息的标准电压互感器、采集功率源输出的电流信息的标准电流互感器以及采集功率源输出的电压信息的待测的光学电压互感器，还包括模拟电能计量装置、AD转换装置、第一合并单元、第一数字化电能计量装置、第二合并单元、第二数字化电能计量装置和上位机，AD转换装置包括第一AD转换装置和第二AD转换装置，标准电流互感器的输出端连接模拟电能计量装置和第一AD转换装置的输入端，标准电压互感器的输出端连接模拟电能计量装置和第二AD转换装置的输入端，第一AD转换装置和第二AD转换装置的输出端均连接第一合并单元的输入端，第一合并单元的输出端连接第一数字化电能计量装置，光学电流互感器以及第一AD转换装置的输出端均连接第二合并单元的输入端，第二合并单元的输出端连接第二数字化电能计量装置，模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置均与上位机相连。Fig. 3 is a schematic diagram of a second preferred structure of the verification platform of the present invention, which can also be understood as a schematic diagram of a preferred structure of an optical voltage transformer electric energy measurement verification platform. The verification platform includes a standard voltage transformer for collecting the voltage information output by the power source, a standard current transformer for collecting the current information output by the power source, and an optical voltage transformer to be tested for collecting the voltage information output by the power source. A metering device, an AD conversion device, a first merging unit, a first digital electric energy metering device, a second merging unit, a second digital electric energy metering device and a host computer, the AD conversion device includes a first AD conversion device and a second AD conversion device, The output end of the standard current transformer is connected to the input end of the analog electric energy metering device and the first AD conversion device, the output end of the standard voltage transformer is connected to the input end of the analog electric energy metering device and the second AD conversion device, and the first AD conversion device and The output ends of the second AD conversion device are all connected to the input ends of the first merging unit, the output ends of the first merging unit are connected to the first digital electric energy metering device, and the output ends of the optical current transformer and the first AD conversion device are connected to the second The input end of the merging unit and the output end of the second merging unit are connected to the second digital electric energy metering device, and the analog electric energy metering device, the first digital electric energy metering device and the second digital electric energy metering device are all connected to the host computer.
图3所示实施例进行光学电压互感器的电能计量验证，在图2所示实施例的基础上将光学电流互感器替换为光学电压互感器，并将图2所示的第二AD转换装置的输出送入第二合并单元替换为将第一AD转换装置的输出送入第二合并单元。光学电压互感器采集电压信息输出数字电压值Ud通过传输光缆送入第二合并单元；标准电流互感器采集电流信息输出模拟小电流信号Ia，通过第一AD转换装置转换成数字电流值Ib，送入第二合并单元；第二合并单元将数字电压值Ud和数字电流值Ib进行组帧，按照标准协议发送到第二数字化电能计量装置，第二数字化电能计量装置显示电能值Ec。当|Ec-Ea|<0.7％Ea或|Ec-Eb|<0.7％Eb时，表明光学电压互感器输出的计量数据用于电能计量是可行的。从而可验证电能计量的全光学解决方法的可行性。The embodiment shown in Figure 3 carries out the electric energy measurement verification of the optical voltage transformer, on the basis of the embodiment shown in Figure 2, the optical current transformer is replaced by an optical voltage transformer, and the second AD conversion device shown in Figure 2 is used The output of the first AD conversion device is sent to the second merging unit instead of sending the output of the first AD converting device to the second merging unit. The optical voltage transformer collects the voltage information and outputs the digital voltage value Ud and sends it to the second merging unit through the transmission optical cable; the standard current transformer collects the current information and outputs the analog small current signal Ia, which is converted into a digital current value Ib by the first AD conversion device and sent to Enter the second merging unit; the second merging unit frames the digital voltage value Ud and the digital current value Ib, and sends them to the second digital electric energy metering device according to the standard protocol, and the second digital electric energy metering device displays the electric energy value Ec. When |Ec-Ea|<0.7%Ea or |Ec-Eb|<0.7%Eb, it indicates that the measurement data output by the optical voltage transformer is feasible for electric energy measurement. The feasibility of an all-optical solution for energy metering can thus be verified.
通过本发明的光学互感器电能计量验证平台进行光学电压互感器的电能计量验证时，也可以通过图4所示的第三种优选结构验证光学电压互感器应用于电能计量的可行性。该实施例是在图2所示结构的基础上增加了采集功率源输出的电压信息的待测的光学电压互感器，以及依次与光学电压互感器连接的第三合并单元和第三数字化电能计量装置，光学电流互感器的输出端还连接第三合并单元的输入端，第三数字化电能计量装置与上位机相连。该方案可以理解为是在已经验证光学电流互感器后以该光学电流互感器为基础进一步验证光学电压互感器。光学电压互感器采集电压信息输出数字电压值Ud3通过光缆送入第三合并单元；光学电流互感器采集电流信息输出数字电流值Ic通过传输光缆送入第三合并单元；第三合并单元将数字电压值Ud3和数字电流值Ic进行组帧，按照标准协议发送到第三数字化电能计量装置，第三数字化电能计量装置显示电能值Ed。为了保证数据采样同步，第一合并单元、第二合并单元和第三合并单元均连接GPS时钟模块以接收GPS时钟模块发出的PPS秒脉冲信号或B码信号。四个电能表(模拟电能计量装置、第一数字化电能计量装置、第二数字化电能计量装置和第三数字化电能计量装置)的输出结果附带时标或计数器信息，通过数据线下载到上位机，在上位机上进行实时比较。当|Ed-Ea|<0.7％Ea或|Ed-Eb|<0.7％Eb时，表明光学电流、电压互感器输出的计量数据用于电能计量是可行的。从而可验证电能计量的全光学解决方法的可行性。When the electric energy metering verification of the optical voltage transformer is carried out through the electric energy metering verification platform of the optical transformer of the present invention, the feasibility of applying the optical voltage transformer to the electric energy metering can also be verified through the third preferred structure shown in FIG. 4 . In this embodiment, on the basis of the structure shown in Figure 2, the optical voltage transformer to be tested for collecting the voltage information output by the power source is added, and the third merging unit and the third digital electric energy meter connected to the optical voltage transformer in turn device, the output end of the optical current transformer is also connected to the input end of the third merging unit, and the third digital electric energy metering device is connected to the host computer. This solution can be understood as further verifying the optical voltage transformer based on the optical current transformer after the optical current transformer has been verified. The optical voltage transformer collects the voltage information and outputs the digital voltage value Ud3 and sends it to the third merging unit through the optical cable; the optical current transformer collects the current information and outputs the digital current value Ic and sends it to the third merging unit through the transmission cable; the third merging unit sends the digital voltage The value Ud3 and the digital current value Ic are framed and sent to the third digital electric energy metering device according to the standard protocol, and the third digital electric energy metering device displays the electric energy value Ed. In order to ensure data sampling synchronization, the first merging unit, the second merging unit and the third merging unit are all connected to the GPS clock module to receive the PPS second pulse signal or B code signal sent by the GPS clock module. The output results of the four electric energy meters (analog electric energy metering device, the first digital electric energy metering device, the second digital electric energy metering device and the third digital electric energy metering device) are attached with time scale or counter information, and are downloaded to the host computer through the data line. Perform real-time comparison on the host computer. When |Ed-Ea|<0.7%Ea or |Ed-Eb|<0.7%Eb, it indicates that the metering data output by optical current and voltage transformer is feasible for electric energy metering. The feasibility of an all-optical solution for energy metering can thus be verified.
同理，图5所示第四种优选结构可以理解为是在已经验证光学电压互感器后以该光学电压互感器为基础进一步验证光学电流互感器。该实施例是在图3所示结构的基础上增加了采集功率源输出的电流信息的待测的光学电流互感器，以及依次与光学电流互感器连接的第四合并单元和第四数字化电能计量装置，光学电压互感器的输出端还连接第四合并单元的输入端，第四数字化电能计量装置与上位机相连。光学电流互感器采集电流信息输出数字电流值Ic通过光缆送入第四合并单元；光学电压互感器采集电压信息输出数字电压值Ud通过传输光缆送入第四合并单元；第四合并单元将数字电流值Ic和数字电压值Ud进行组帧，按照标准协议发送到第四数字化电能计量装置，第四数字化电能计量装置显示电能值Ed。为了保证数据采样同步，第一合并单元、第二合并单元和第四合并单元均连接GPS时钟模块以接收GPS时钟模块发出的PPS秒脉冲信号或B码信号。四个电能表(模拟电能计量装置、第一数字化电能计量装置、第二数字化电能计量装置和第四数字化电能计量装置)的输出结果附带时标或计数器信息，通过数据线下载到上位机，在上位机上进行实时比较。当|Ed-Ea|<0.7％Ea或|Ed-Eb|<0.7％Eb时，表明光学电压、电流互感器输出的计量数据用于电能计量是可行的。从而可验证电能计量的全光学解决方法的可行性。Similarly, the fourth preferred structure shown in FIG. 5 can be understood as further verifying the optical current transformer based on the optical voltage transformer after the optical voltage transformer has been verified. In this embodiment, on the basis of the structure shown in Figure 3, the optical current transformer to be tested for collecting the current information output by the power source is added, and the fourth merging unit and the fourth digital electric energy meter connected to the optical current transformer in turn device, the output end of the optical voltage transformer is also connected to the input end of the fourth merging unit, and the fourth digital electric energy metering device is connected to the upper computer. The optical current transformer collects the current information and outputs the digital current value Ic to the fourth merging unit through the optical cable; the optical voltage transformer collects the voltage information and outputs the digital voltage value Ud and sends it to the fourth merging unit through the transmission optical cable; the fourth merging unit sends the digital current to the fourth merging unit The value Ic and the digital voltage value Ud are framed and sent to the fourth digital electric energy metering device according to the standard protocol, and the fourth digital electric energy metering device displays the electric energy value Ed. In order to ensure data sampling synchronization, the first merging unit, the second merging unit and the fourth merging unit are all connected to the GPS clock module to receive the PPS second pulse signal or B code signal sent by the GPS clock module. The output results of the four electric energy meters (analog electric energy metering device, the first digital electric energy metering device, the second digital electric energy metering device and the fourth digital electric energy metering device) are attached with time scale or counter information, and are downloaded to the host computer through the data line, and then Perform real-time comparison on the host computer. When |Ed-Ea|<0.7%Ea or |Ed-Eb|<0.7%Eb, it indicates that the measurement data output by optical voltage and current transformer is feasible for electric energy measurement. The feasibility of an all-optical solution for energy metering can thus be verified.
本发明还涉及一种光学互感器电能计量验证方法，该方法与上述的光学互感器电能计量验证平台相对应，也可以理解为是光学互感器电能计量验证平台的实现方法。该方法通过标准电压互感器和标准电流互感器采集功率源的电压信息和电流信息后分别输出模拟小电压信号和模拟小电流信号，将模拟小电压信号和模拟小电流信号输出至模拟电能计量装置；同时模拟小电压信号和模拟小电流信号均通过AD转换装置进行AD转换从而分别转换为数字电压值和数字电流值，由第一合并单元将数字电压值和数字电流值进行组帧并按照标准协议发送到第一数字化电能计量装置；将待测的光学互感器采集功率源的相应信息后输出数字值，由第二合并单元将该数字值以及AD转换装置输出的与光学互感器输出的数字值相配的数字电压值或数字电流值进行组帧，并按照标准协议发送到第二数字化电能计量装置；然后由上位机分别接收模拟电能计量装置、第一数字化电能计量装置和第二数字化电能计量装置的三个电能值，并进行实时比较，通过误差计算判断待测的光学互感器输出的计量数据用于电能计量是否可行。本发明光学互感器电能计量验证方法的具体方案可参考图2—图5所示。The present invention also relates to a verification method for electric energy measurement of an optical transformer, which corresponds to the above-mentioned electric energy measurement verification platform for an optical transformer, and can also be understood as a method for realizing the electric energy measurement verification platform for an optical transformer. The method collects the voltage information and current information of the power source through the standard voltage transformer and the standard current transformer, and then outputs the simulated small voltage signal and the simulated small current signal respectively, and outputs the simulated small voltage signal and the simulated small current signal to the simulated electric energy metering device ; Simultaneously, both the analog small voltage signal and the analog small current signal are converted into digital voltage values and digital current values through the AD conversion device for AD conversion, and the digital voltage values and digital current values are framed by the first merging unit and according to the standard The protocol is sent to the first digital electric energy metering device; the optical transformer to be tested outputs the digital value after collecting the corresponding information of the power source, and the digital value and the digital value output by the AD conversion device and the digital output of the optical transformer are output by the second merging unit The digital voltage value or digital current value that matches the value is framed and sent to the second digital electric energy metering device according to the standard protocol; then the host computer receives the analog electric energy metering device, the first digital electric energy metering device and the second digital electric energy metering device respectively The three electric energy values of the device are compared in real time, and the error calculation is used to judge whether the metering data output by the optical transformer to be tested is feasible for electric energy metering. The specific scheme of the verification method for electric energy measurement of the optical transformer of the present invention can be referred to as shown in Fig. 2-Fig. 5 .
如图2所示，在待测的光学互感器为光学电流互感器时，光学电流互感器采集功率源输出的电流信息后输出的数字电流值以及AD转换装置输出的数字电压值均进入第二合并单元，由第二合并单元将数字电流值和数字电压值进行组帧，并按照标准协议发送到第二数字化电能计量装置，上位机通过误差计算判断该光学电流互感器输出的计量数据用于电能计量是否可行。如图3所示，在待测的光学互感器为光学电压互感器时，光学电压互感器采集功率源输出的电压信息后输出的数字电压值以及AD转换装置输出的数字电流值均进入第二合并单元，由第二合并单元将数字电压值和数字电流值进行组帧，并按照标准协议发送到第二数字化电能计量装置，上位机通过误差计算判断该光学电压互感器输出的计量数据用于电能计量是否可行。优选地，可设置第一合并单元和第二合并单元均接收GPS时钟发出的秒脉冲信号或B码信号使得标准电流互感器和标准电压互感器以及待测的光学电流互感器或光学电压互感器的数据同步。在已经验证光学电流互感器后还能够以该光学电流互感器为基础进一步验证光学电压互感器，如图4所示方案。同理，在已经验证光学电压互感器后还能够以该光学电压互感器为基础进一步验证光学电流互感器，如图5所示方案。As shown in Figure 2, when the optical transformer to be tested is an optical current transformer, the digital current value output by the optical current transformer after collecting the current information output by the power source and the digital voltage value output by the AD conversion device enter the second The merging unit, the second merging unit frames the digital current value and the digital voltage value, and sends them to the second digital electric energy metering device according to the standard protocol, and the upper computer judges the metering data output by the optical current transformer through error calculation. Whether energy metering is feasible. As shown in Figure 3, when the optical transformer to be tested is an optical voltage transformer, the digital voltage value output by the optical voltage transformer after collecting the voltage information output by the power source and the digital current value output by the AD conversion device enter the second The merging unit, the second merging unit frames the digital voltage value and the digital current value, and sends them to the second digital electric energy metering device according to the standard protocol, and the upper computer judges the metering data output by the optical voltage transformer through error calculation. Whether energy metering is feasible. Preferably, both the first merging unit and the second merging unit can be set to receive the second pulse signal or B code signal sent by the GPS clock so that the standard current transformer and standard voltage transformer and the optical current transformer or optical voltage transformer to be tested data synchronization. After the optical current transformer has been verified, the optical voltage transformer can be further verified on the basis of the optical current transformer, as shown in FIG. 4 . Similarly, after the optical voltage transformer has been verified, the optical current transformer can be further verified based on the optical voltage transformer, as shown in FIG. 5 .
本发明光学互感器电能计量验证方法利用了公认的标准电压互感器和标准电流互感器的模拟输出结果和数字输出结果并配合待测的光学互感器的数字化的电能计量输出结果进行比对，如果光学互感器的电能计量输出结果与标准互感器电能计量结果之间的误差小于0.7％(目前模拟电能计量的误差)，则可验证光学互感器完全可应用于电能计量。通过本发明的验证方法能够完成光学互感器电能计量的准确验证，解决了目前光学互感器在电能计量使用中缺乏验证的问题。The optical transformer power measurement verification method of the present invention utilizes the analog output results and digital output results of the recognized standard voltage transformer and standard current transformer and compares the digital power measurement output results of the optical transformer to be tested, if The error between the electric energy measurement output result of the optical transformer and the electric energy measurement result of the standard transformer is less than 0.7% (the error of the current analog electric energy measurement), then it can be verified that the optical transformer can be completely applied to electric energy measurement. The verification method of the invention can complete the accurate verification of the electric energy measurement of the optical transformer, and solves the problem of lack of verification of the current optical transformer in the use of electric energy measurement.
应当指出，以上所述具体实施方式可以使本领域的技术人员更全面地理解本发明创造，但不以任何方式限制本发明创造。因此，尽管本说明书参照附图和实施例对本发明创造已进行了详细的说明，但是，本领域技术人员应当理解，仍然可以对本发明创造进行修改或者等同替换，总之，一切不脱离本发明创造的精神和范围的技术方案及其改进，其均应涵盖在本发明创造专利的保护范围当中。It should be pointed out that the specific embodiments described above can enable those skilled in the art to understand the invention more comprehensively, but do not limit the invention in any way. Therefore, although this specification has described the invention in detail with reference to the accompanying drawings and embodiments, those skilled in the art should understand that the invention can still be modified or equivalently replaced. The technical solutions and their improvements in the spirit and scope should all be included in the protection scope of the invention patent.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006666.2A CN104597424B (en) | 2015-01-07 | 2015-01-07 | A kind of optical transformer electrical energy measurement verification platform and verification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006666.2A CN104597424B (en) | 2015-01-07 | 2015-01-07 | A kind of optical transformer electrical energy measurement verification platform and verification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104597424A true CN104597424A (en) | 2015-05-06 |
| CN104597424B CN104597424B (en) | 2018-05-22 |
Family
ID=53123330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510006666.2A Expired - Fee Related CN104597424B (en) | 2015-01-07 | 2015-01-07 | A kind of optical transformer electrical energy measurement verification platform and verification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104597424B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280607A (en) * | 2014-05-14 | 2015-01-14 | 贵州电力试验研究院 | Data synchronization framing device of digital substation independent metering system |
| CN105510859A (en) * | 2016-01-28 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | System and method for evaluating electronic transformer |
| CN106526520A (en) * | 2016-11-10 | 2017-03-22 | 广东电网有限责任公司电力科学研究院 | Test system for light source fluctuation interference for optical current transformer |
| CN109375139A (en) * | 2018-11-06 | 2019-02-22 | 国网内蒙古东部电力有限公司电力科学研究院 | A device and method for automatically testing fiber optic current transformers |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413995A (en) * | 2008-11-28 | 2009-04-22 | 南瑞航天（北京）电气控制技术有限公司 | Apparatus for checking electronic type current mutual inductor |
| CN201444193U (en) * | 2009-05-27 | 2010-04-28 | 辽宁省电力有限公司鞍山供电公司 | Comprehensive error checking device for digital electric energy metering device |
| CN102466789A (en) * | 2010-11-12 | 2012-05-23 | 华东电力试验研究院有限公司 | Photoelectric transformer stability testing device and method |
| CN102819004A (en) * | 2012-08-31 | 2012-12-12 | 江苏省电力公司电力科学研究院 | Comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations |
| CN102944860A (en) * | 2012-10-31 | 2013-02-27 | 江苏省电力公司电力科学研究院 | Method and device for comparing running errors of optical current transformer and electromagnetic current transformer in real time |
| CN103792508A (en) * | 2014-01-27 | 2014-05-14 | 国家电网公司 | Error test system and method for digitized metering device |
| CN204479738U (en) * | 2015-01-07 | 2015-07-15 | 贵州电力试验研究院 | A kind of optical transformer electric energy metrical verification platform |
-
2015
- 2015-01-07 CN CN201510006666.2A patent/CN104597424B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413995A (en) * | 2008-11-28 | 2009-04-22 | 南瑞航天（北京）电气控制技术有限公司 | Apparatus for checking electronic type current mutual inductor |
| CN201444193U (en) * | 2009-05-27 | 2010-04-28 | 辽宁省电力有限公司鞍山供电公司 | Comprehensive error checking device for digital electric energy metering device |
| CN102466789A (en) * | 2010-11-12 | 2012-05-23 | 华东电力试验研究院有限公司 | Photoelectric transformer stability testing device and method |
| CN102819004A (en) * | 2012-08-31 | 2012-12-12 | 江苏省电力公司电力科学研究院 | Comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations |
| CN102944860A (en) * | 2012-10-31 | 2013-02-27 | 江苏省电力公司电力科学研究院 | Method and device for comparing running errors of optical current transformer and electromagnetic current transformer in real time |
| CN103792508A (en) * | 2014-01-27 | 2014-05-14 | 国家电网公司 | Error test system and method for digitized metering device |
| CN204479738U (en) * | 2015-01-07 | 2015-07-15 | 贵州电力试验研究院 | A kind of optical transformer electric energy metrical verification platform |
Non-Patent Citations (1)
| Title |
|---|
| 国家电力调度控制中心、国网浙江省电力公司 编著: "《智能变电站 继电保护技术问答》", 31 May 2014 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280607A (en) * | 2014-05-14 | 2015-01-14 | 贵州电力试验研究院 | Data synchronization framing device of digital substation independent metering system |
| CN105510859A (en) * | 2016-01-28 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | System and method for evaluating electronic transformer |
| CN106526520A (en) * | 2016-11-10 | 2017-03-22 | 广东电网有限责任公司电力科学研究院 | Test system for light source fluctuation interference for optical current transformer |
| CN106526520B (en) * | 2016-11-10 | 2019-12-06 | 广东电网有限责任公司电力科学研究院 | optical current transformer light source fluctuation interference test system |
| CN109375139A (en) * | 2018-11-06 | 2019-02-22 | 国网内蒙古东部电力有限公司电力科学研究院 | A device and method for automatically testing fiber optic current transformers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104597424B (en) | 2018-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102819004B (en) | Comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations | |
| CN102621514B (en) | Electronic transformer verifying device | |
| CN202443082U (en) | Merging unit test system with analog input and university | |
| CN202758062U (en) | Overall metering error detection system of digital transformer station electric energy metering device | |
| CN101498775B (en) | Calibration apparatus for gate energy meter of digitized transforming plant | |
| CN101526562A (en) | Distributed wireless high-voltage equipment insulating live testing system and testing method | |
| CN103604992B (en) | Method and system for substation secondary circuit wireless nuclear phase load calibration and protection | |
| CN108872921A (en) | Device and method for verifying broadband characteristics of direct current transformer | |
| CN104062625A (en) | Digital electric energy metering device calibration equipment and method thereof | |
| CN206387899U (en) | A kind of DC current transformer frequency response characteristic check system | |
| CN107767722B (en) | Multifunctional digital electric energy metering training simulation system | |
| CN203930043U (en) | A kind of digitalized electric energy measuring apparatus correcting device | |
| CN103901384B (en) | Analog quantity and digital quantity outputting standard power source detection device and method | |
| CN104597424B (en) | A kind of optical transformer electrical energy measurement verification platform and verification method | |
| CN204065394U (en) | A kind of digital electric energy meter in-situs tester based on IEC61850 | |
| CN103901391A (en) | Novel analog standard meter with digital electric energy meter detection function and detection method | |
| CN102680807B (en) | Optical fiber digitized remote phase-checking system and phase-checking method thereof | |
| CN206311749U (en) | DC current transformer transient response characteristic test system | |
| CN102928811A (en) | Electric energy meter on-site detecting system based on optical fiber communication | |
| CN206411250U (en) | A kind of DC electronic current transformer digitizes real-time calibration equipment | |
| CN104777445B (en) | A kind of electronic type voltage transformer on-line testing system | |
| CN106054000A (en) | Interval merging unit power factor angle consistency on-site test system and method | |
| CN201319049Y (en) | High-tension current mutual-inductor transformation ratio tester | |
| CN210347905U (en) | System for be used for carrying out whole system of examining to direct current transformer check gauge | |
| CN204903668U (en) | Intelligent substation small -signal communication simulation merging cells accuracy test equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20190107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |