System and method for generating power plant relay protection setting calculation report

Abstract

The invention relates to a system and a method for generating power plant relay protection setting calculation report. The system comprises four sequential execution units, namely a simulation calculation model automatically generating unit, a short-circuit current calculating unit, a protection definite value calculating unit and a setting calculation report automatically generating unit; the system further comprises a relay protection element creating and maintaining unit and a setting calculation report document format configuring unit; the first four units execute sequentially, the last two units respectively set and maintain the first four units, thus the units are effectively combined and automatically linked with each other, the automation level of the power plant relay protection setting calculation process is enhanced, the accuracy and precision of the short-circuit current calculation and the protection definite value calculation are enhanced, the working efficiency of the setting calculation is improved, great amount of repeated labor is avoided, therefore, the system and the method provided by the invention are appropriate for the relay protection setting calculation work of the power plants with any mode of connection.

Description

technical field [0001] The invention relates to a power plant relay protection setting calculation report that realizes integration and openness in the power system relay protection setting calculation process, thereby improving the automation level and setting calculation accuracy of the relay protection setting calculation. systems and methods. Background technique [0002] Relay protection is an indispensable and important part in the power system, which is directly related to the safety of power equipment and the stable operation of the power system. The setting calculation of relay protection plays an important and basic role in the safe and stable operation of power plants and power systems. In order to ensure the safe and stable operation of power plants, various relay protections must form an organic whole and cooperate with each other to form a tight system. Improving the automation level of relay protection fixed value calculation and improving the accuracy and p...

AI Technical Summary

Problems solved by technology

However, there are still the following problems: For example, two types of software can be used for short-circuit current calculation. One is independently developed by the developer and is usually integrated with a graphical input interface. The main problem is that the accuracy of short-circuit current calculation is poor , a lot of simplifications are used in the calculation process, and they are powerless to solve the problems that arise, especially in the transient process; the other is commercial calculation and analysis software provided by professional software developers, such as PSCAD software, which is used for various The fast, accurate and easy-to-use power system simulator for power system design and verification can be widely used in power quality research, power electronics design, distributed power generation and transmission planning, etc. analyzing tool

It can fully guarantee the accuracy of short-circuit current calculation results, but its use requires certain software application expertise, and its calculation results need to be manually converted and sent to the relay protection setting calculation software

In addition, the protection fixed value calculation software is independently developed by each manufacturer, and there are many types of protection involved in power plants, and there is a problem that it is extremely inconvenient to use multiple different fixed value calculation software at the same time

In the process of generating the final protection setting report, it is still basically compiled manually at present, and the calculation results of the setting value need to be manually compiled into the final document format. On the one hand, there is the possibility of errors, on the other hand, the workload is heavy and repetitive work is many

[0005] To sum up, at present, in the whole process of power plant relay protection setting calculation, the transition between the three main links still needs manual intervention, and there is no effective method to organically integrate the above three links. combine

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