CN106501749A - A kind of CT transient characterisitics and actual remanent magnetism detecting system - Google Patents

Abstract

Translated fromChinese

本发明涉及CT检测系统，具体是一种CT暂态特性和实际剩磁检测系统。本发明解决了现有CT检测系统缺少合理的网络拓扑结构、缺少统一高效的传输介质的问题。一种CT暂态特性和实际剩磁检测系统，包括N组测量模块、2N个信号调理模块、A/D转换模块、DSP、显示器、键盘、通讯接口、光纤；其中，每组测量模块均包括一个暂态误差测量模块和一个励磁特性测量模块；N个暂态误差测量模块通过光纤与其中N个信号调理模块一一对应连接；N个励磁特性测量模块通过光纤与另外N个信号调理模块一一对应连接；2N个信号调理模块均通过光纤与A/D转换模块连接，且2N个信号调理模块与A/D转换模块共同构成星型拓扑结构。本发明适用于CT检测。

The invention relates to a CT detection system, in particular to a CT transient characteristic and actual residual magnetism detection system. The invention solves the problems that the existing CT detection system lacks a reasonable network topology structure and a unified and efficient transmission medium. A CT transient characteristic and actual residual magnetism detection system, including N groups of measurement modules, 2N signal conditioning modules, A/D conversion modules, DSP, display, keyboard, communication interface, and optical fiber; wherein, each group of measurement modules includes A transient error measurement module and an excitation characteristic measurement module; N transient error measurement modules are connected one by one to N signal conditioning modules through optical fibers; N excitation characteristic measurement modules are connected to the other N signal conditioning modules through optical fibers A corresponding connection; 2N signal conditioning modules are connected to the A/D conversion module through optical fibers, and the 2N signal conditioning modules and the A/D conversion module together form a star topology. The invention is suitable for CT detection.

Description

Translated fromChinese

一种CT暂态特性和实际剩磁检测系统A CT Transient Characteristic and Actual Remanence Detection System

技术领域technical field

本发明涉及CT检测系统，具体是一种CT暂态特性和实际剩磁检测系统。The invention relates to a CT detection system, in particular to a CT transient characteristic and actual residual magnetism detection system.

背景技术Background technique

CT（Current Tranfer，电流互感器）作为电流信号传变元件，广泛应用于电力系统监控、保护、录波和测距等技术领域。在实际应用中，CT的暂态特性和实际剩磁直接关系到电力系统的正常运行。因此，为了保证电力系统的正常运行，目前普遍采用CT检测系统来对CT的暂态特性和实际剩磁进行检测。然而现有CT检测系统由于自身结构所限，普遍存在如下问题：其一，现有CT检测系统普遍缺少合理的网络拓扑结构，导致其存在数据传输不稳定的问题，由此直接影响检测的准确性。其二，现有CT检测系统普遍缺少统一高效的传输介质，导致其存在数据传输速度慢、数据共享性差的问题，由此同样影响检测的准确性。基于此，有必要发明一种全新的CT检测系统，以解决现有CT检测系统缺少合理的网络拓扑结构、缺少统一高效的传输介质的问题。CT (Current Tranfer, current transformer), as a current signal transmission element, is widely used in technical fields such as power system monitoring, protection, wave recording and distance measurement. In practical applications, the transient characteristics of CT and the actual residual magnetism are directly related to the normal operation of the power system. Therefore, in order to ensure the normal operation of the power system, a CT detection system is generally used to detect the transient characteristics of the CT and the actual residual magnetism. However, due to the limitation of its own structure, the existing CT detection system generally has the following problems: First, the existing CT detection system generally lacks a reasonable network topology structure, which leads to the problem of unstable data transmission, which directly affects the accuracy of detection sex. Second, the existing CT detection systems generally lack a unified and efficient transmission medium, which leads to the problems of slow data transmission speed and poor data sharing, which also affects the accuracy of detection. Based on this, it is necessary to invent a brand-new CT detection system to solve the problems that the existing CT detection system lacks a reasonable network topology structure and a unified and efficient transmission medium.

发明内容Contents of the invention

本发明为了解决现有CT检测系统缺少合理的网络拓扑结构、缺少统一高效的传输介质的问题，提供了一种CT暂态特性和实际剩磁检测系统。In order to solve the problem that the existing CT detection system lacks a reasonable network topology structure and a unified and efficient transmission medium, the invention provides a CT transient characteristic and actual residual magnetism detection system.

本发明是采用如下技术方案实现的：The present invention is realized by adopting the following technical solutions:

一种CT暂态特性和实际剩磁检测系统，包括N组测量模块、2N个信号调理模块、A/D转换模块、DSP、显示器、键盘、通讯接口、光纤；其中，每组测量模块均包括一个暂态误差测量模块和一个励磁特性测量模块；N个暂态误差测量模块通过光纤与其中N个信号调理模块一一对应连接；N个励磁特性测量模块通过光纤与另外N个信号调理模块一一对应连接；2N个信号调理模块均通过光纤与A/D转换模块连接，且2N个信号调理模块与A/D转换模块共同构成星型拓扑结构；A/D转换模块通过光纤与DSP连接；DSP通过光纤分别与显示器、键盘、通讯接口连接；N为正整数。A CT transient characteristic and actual residual magnetism detection system, including N groups of measurement modules, 2N signal conditioning modules, A/D conversion modules, DSP, display, keyboard, communication interface, and optical fiber; wherein, each group of measurement modules includes A transient error measurement module and an excitation characteristic measurement module; N transient error measurement modules are connected one by one to N signal conditioning modules through optical fibers; N excitation characteristic measurement modules are connected to the other N signal conditioning modules through optical fibers One corresponding connection; 2N signal conditioning modules are connected to A/D conversion modules through optical fibers, and 2N signal conditioning modules and A/D conversion modules together form a star topology; A/D conversion modules are connected to DSP through optical fibers; The DSP is respectively connected to the monitor, the keyboard and the communication interface through an optical fiber; N is a positive integer.

工作时，N组测量模块一一对应地安装在N个CT上，通讯接口与外部设备连接。具体工作过程如下：N个暂态误差测量模块实时采集N个CT的暂态误差数据，并通过光纤将采集到的暂态误差数据实时发送至其中N个信号调理模块，该N个信号调理模块对接收到的暂态误差数据进行实时调理，并通过光纤将调理后的暂态误差数据实时发送至A/D转换模块。N个励磁特性测量模块实时采集N个CT的励磁特性数据，并通过光纤将采集到的励磁特性数据实时发送至另外N个信号调理模块，该N个信号调理模块对接收到的励磁特性数据进行实时调理，并通过光纤将调理后的励磁特性数据实时发送至A/D转换模块。A/D转换模块对接收到的数据（暂态误差数据和励磁特性数据）进行实时转换，并通过光纤将转换后的数据实时发送至DSP。DSP对接收到的数据进行实时分析，并根据分析结果实时生成暂态特性曲线和实际剩磁曲线，然后通过光纤将暂态特性曲线和实际剩磁曲线实时发送至显示器进行显示，由此实现CT的暂态特性检测和实际剩磁检测。在此过程中，外部设备通过通讯接口可以实时读取DSP中的暂态特性曲线和实际剩磁曲线。工作人员通过键盘可以对DSP进行实时设置。When working, N groups of measurement modules are installed on N CTs one by one, and the communication interface is connected with external equipment. The specific working process is as follows: N transient error measurement modules collect the transient error data of N CTs in real time, and send the collected transient error data to N signal conditioning modules in real time through optical fiber, and the N signal conditioning modules The received transient error data is adjusted in real time, and the adjusted transient error data is sent to the A/D conversion module in real time through the optical fiber. The N excitation characteristic measurement modules collect the excitation characteristic data of N CTs in real time, and send the collected excitation characteristic data to the other N signal conditioning modules in real time through the optical fiber, and the N signal conditioning modules perform the excitation characteristic data received. Real-time conditioning, and the adjusted excitation characteristic data is sent to the A/D conversion module in real time through optical fiber. The A/D conversion module converts the received data (transient error data and excitation characteristic data) in real time, and sends the converted data to DSP in real time through optical fiber. The DSP analyzes the received data in real time, and generates the transient characteristic curve and the actual remanence curve in real time according to the analysis results, and then sends the transient characteristic curve and the actual remanence curve to the display for display in real time through the optical fiber, thereby realizing CT Transient characteristic detection and actual residual magnetism detection. During this process, the external device can read the transient characteristic curve and the actual remanence curve in the DSP in real time through the communication interface. The staff can set the DSP in real time through the keyboard.

基于上述过程，与现有CT检测系统相比，本发明所述的一种CT暂态特性和实际剩磁检测系统通过采用全新结构，具备了如下优点：其一，本发明采用信号调理模块、A/D转换模块构成了星型拓扑结构，其通过利用星型拓扑结构结构简单、控制简单、故障诊断和隔离容易、方便服务、扩展性好的优点，具备了合理的网络拓扑结构，由此使得数据传输更稳定，从而有效保证了检测的准确性。其二，本发明采用光纤作为传输介质，其通过利用光纤频带宽、损耗低、重量轻、抗干扰能力强、保真度高、性能可靠的优点，具备了统一高效的传输介质，由此使得数据传输速度更快、数据共享性更高，从而同样有效保证了检测的准确性。Based on the above process, compared with the existing CT detection system, a CT transient characteristic and actual residual magnetism detection system according to the present invention has the following advantages by adopting a new structure: First, the present invention adopts a signal conditioning module, The A/D conversion module constitutes a star topology structure, which has a reasonable network topology structure by utilizing the star topology structure, simple control, easy fault diagnosis and isolation, convenient service, and good scalability. It makes data transmission more stable, thereby effectively ensuring the accuracy of detection. Second, the present invention uses optical fiber as the transmission medium, which has a unified and efficient transmission medium by utilizing the advantages of optical fiber frequency bandwidth, low loss, light weight, strong anti-interference ability, high fidelity, and reliable performance, thus making The data transmission speed is faster and the data sharing is higher, which also effectively guarantees the accuracy of detection.

本发明结构合理、设计巧妙，有效解决了现有CT检测系统缺少合理的网络拓扑结构、缺少统一高效的传输介质的问题，适用于CT检测。The invention has a reasonable structure and ingenious design, effectively solves the problems that the existing CT detection system lacks a reasonable network topology structure and a unified and efficient transmission medium, and is suitable for CT detection.

附图说明Description of drawings

图1是本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.

具体实施方式detailed description

一种CT暂态特性和实际剩磁检测系统，包括N组测量模块、2N个信号调理模块、A/D转换模块、DSP、显示器、键盘、通讯接口、光纤；其中，每组测量模块均包括一个暂态误差测量模块和一个励磁特性测量模块；N个暂态误差测量模块通过光纤与其中N个信号调理模块一一对应连接；N个励磁特性测量模块通过光纤与另外N个信号调理模块一一对应连接；2N个信号调理模块均通过光纤与A/D转换模块连接，且2N个信号调理模块与A/D转换模块共同构成星型拓扑结构；A/D转换模块通过光纤与DSP连接；DSP通过光纤分别与显示器、键盘、通讯接口连接；N为正整数。A CT transient characteristic and actual residual magnetism detection system, including N groups of measurement modules, 2N signal conditioning modules, A/D conversion modules, DSP, display, keyboard, communication interface, and optical fiber; wherein, each group of measurement modules includes A transient error measurement module and an excitation characteristic measurement module; N transient error measurement modules are connected one by one to N signal conditioning modules through optical fibers; N excitation characteristic measurement modules are connected to the other N signal conditioning modules through optical fibers One corresponding connection; 2N signal conditioning modules are connected to A/D conversion modules through optical fibers, and 2N signal conditioning modules and A/D conversion modules together form a star topology; A/D conversion modules are connected to DSP through optical fibers; The DSP is respectively connected to the monitor, the keyboard and the communication interface through an optical fiber; N is a positive integer.

具体实施时，所述DSP为TMS320C6201型DSP；所述光纤为单模光纤。During specific implementation, the DSP is a TMS320C6201 DSP; the optical fiber is a single-mode optical fiber.

Claims (2)

Translated fromChinese

1.一种CT暂态特性和实际剩磁检测系统，其特征在于：包括N组测量模块、2N个信号调理模块、A/D转换模块、DSP、显示器、键盘、通讯接口、光纤；其中，每组测量模块均包括一个暂态误差测量模块和一个励磁特性测量模块；N个暂态误差测量模块通过光纤与其中N个信号调理模块一一对应连接；N个励磁特性测量模块通过光纤与另外N个信号调理模块一一对应连接；2N个信号调理模块均通过光纤与A/D转换模块连接，且2N个信号调理模块与A/D转换模块共同构成星型拓扑结构；A/D转换模块通过光纤与DSP连接；DSP通过光纤分别与显示器、键盘、通讯接口连接；N为正整数。1. A CT transient characteristic and actual remanence detection system, is characterized in that: comprise N groups of measurement modules, 2N signal conditioning modules, A/D conversion modules, DSP, display, keyboard, communication interface, optical fiber; Wherein, Each group of measurement modules includes a transient error measurement module and an excitation characteristic measurement module; N transient error measurement modules are connected to N signal conditioning modules through optical fibers in one-to-one correspondence; N excitation characteristic measurement modules are connected to other N signal conditioning modules are connected in one-to-one correspondence; 2N signal conditioning modules are connected to A/D conversion modules through optical fibers, and 2N signal conditioning modules and A/D conversion modules together form a star topology; A/D conversion modules The DSP is connected with the optical fiber; the DSP is respectively connected with the monitor, the keyboard and the communication interface through the optical fiber; N is a positive integer.2.根据权利要求1所述的一种CT暂态特性和实际剩磁检测系统，其特征在于：所述DSP为TMS320C6201型DSP；所述光纤为单模光纤。2. A CT transient characteristic and actual residual magnetism detection system according to claim 1, characterized in that: said DSP is a TMS320C6201 type DSP; said optical fiber is a single-mode optical fiber.