Direct-current grounding electrode electrical variable measurement system and state evaluation method

Abstract

The invention discloses a direct-current grounding electrode electrical variable measurement system and a state evaluation method. The direct-current grounding electrode electrical variable measurement system comprises a direct-current grounding electrode measurement module, a portable data receiving module, a first communication module, a state evaluation module, a second communication module, aserver module and a query module. According to the invention, analysis is carried out from two aspects of safety assessment of the DC grounding electrode and safety assessment of the surrounding environment of the DC grounding electrode, a comprehensive evaluation method for the state of a direct-current grounding electrode is provided, the operation state of the grounding electrode is comprehensively judged by utilizing a plurality of characteristic parameters, efficient optimization of measurement data transmission can be realized in a severe operation environment, and parameters are greatlyreduced in the aspect of calculating the data transmission stability rate of the communication node in the operation time of the whole direct-current grounding electrode measurement process.

Description

technical field [0001] The invention belongs to the technical field of electric variable measurement, and in particular relates to a DC ground electrode electric variable measurement system and a state evaluation method. Background technique [0002] With the rapid development of photoelectric information technology science and technology, especially the popularization of image communication and wireless communication network has potential huge application value in the field of DC ground electrode electric variable measurement. At present, my country has built a number of long-distance DC with different voltage levels. The transmission line and the grounding electrode are important components of the converter station of the DC transmission project. They play the role of clamping the neutral point potential, passing the unbalanced current, and providing the earth return channel for the DC when the pole line is overhauled or faulty. The patent number is 201410099060.3, titled a ...

AI Technical Summary

Problems solved by technology

On the one hand, in the past, the evaluation of the safety status of the DC grounding electrode often only focused on the grounding electrode’s grounding resistance, step potential, contact potential, electrical integrity, electrode corrosion status, and other safety indicators of the grounding electrode itself, ignoring the possibility of the surrounding environment of the grounding electrode. Existing security risks

On the other hand, at present, the operating state of the grounding electrode is evaluated by using a single characteristic parameter. Not only is it difficult to define the actual operating state of the grounding electrode, it is easy to cause misjudgment, and it is impossible to distinguish between each characteristic parameter and the state of the grounding electrode. Correlation, there is a lack of a scientific and reasonable comprehensive evaluation method for the operating state of the grounding electrode. The patent does not consider the mobility and dynamics of the operation. The location of the portable data receiving module and the route area are used to predict the network throughput of the communication path. It is impossible to accurately understand the operating status of the grounding electrode by using the characteristics of the communication path in different areas to ensure the safe and stable operation of the grounding electrode.

Images