阅读说明：本技术 一种电路短路智能分析系统 (Intelligent circuit short circuit analysis system ) 是由 刘琳 于 2018-05-29 设计创作，主要内容包括：本发明公开了一种电路短路智能分析系统,所述系统包括：第一评估单元,用于单相和面板系统设备责任评估；第一确定单元,用于确定最大和最小短路故障电流；第一检测单元,用于检查瞬时和中断设备的责任能力；第二检测单元,用于检查断路器关闭和自锁功能；解决了在现有技术中,短路分析主要为人工采用辅助设备进行分析,效率较低且准确性不能得到保障的技术问题,实现了系统设计合理,高效智能准确的完成短路分析的技术效果。(The invention discloses a circuit short circuit intelligent analysis system, which comprises: a first evaluation unit for single-phase and panel system equipment responsibility evaluation; a first determining unit for determining maximum and minimum short-circuit fault currents; a first detection unit for checking the responsibility of the instantaneous and interrupted equipment; the second detection unit is used for checking the closing and self-locking functions of the circuit breaker; the technical problems that in the prior art, short circuit analysis is mainly manually carried out by adopting auxiliary equipment, efficiency is low, accuracy cannot be guaranteed are solved, and the technical effects that system design is reasonable, and short circuit analysis is efficiently, intelligently and accurately completed are achieved.)

1. An intelligent analysis system for short circuits, the system comprising:

A first evaluation unit for single-phase and panel system equipment responsibility evaluation;

A first determining unit for determining maximum and minimum short-circuit fault currents;

a first detection unit for checking the responsibility of the instantaneous and interrupted equipment;

and the second detection unit is used for checking the closing and self-locking functions of the circuit breaker.

2. The intelligent analysis system of circuit shorts according to claim 1, characterized in that the system further comprises a second evaluation unit for evaluating a symmetrical or rated total circuit breaker.

3. The intelligent circuit short analysis system of claim 1, wherein the system is configured to interrupt fault current responsibility as a function of switch contact open time.

4. The intelligent analysis system for short circuit of claim 1, wherein the system is used for user to set the contact separation time standard.

5. The intelligent analysis system of claim 1, wherein the system uses three different impedance networks to form the calculated instantaneous, interrupted, and steady state short circuit currents.

Technical Field

The invention relates to the field of power systems, in particular to an intelligent circuit short circuit analysis system.

Background

short circuit means that a circuit or a part of a circuit is shorted. If the load and the power supply are wired together, which is called a short circuit, the current supplied by the power supply in the short circuit is much larger than the current supplied in the open circuit, and the short circuit is generally not allowed, and if the short circuit occurs, the power supply or equipment can be burnt out.

in an electric power system, a "short circuit" refers to a connection between a phase and a phase or between a phase and ground (or neutral) other than a normal operation condition of the electric power system. The basic form of short-circuiting in three-phase systems is: three-phase short circuit, two-phase short circuit, single-phase ground short circuit, two-phase ground short circuit. A very large current flows when an abnormal connection (i.e., short circuit) occurs between the phases or between the phases and the ground (or neutral line). The current value is much greater than the rated current and depends on the electrical distance of the short-circuit point from the power supply. The short circuit is a low-resistance short circuit between conductive parts with different potentials, and is equivalent to that a power supply is directly connected into a closed loop through a wire without passing through a load. (usually this is severe and should be avoided as much as possible to avoid failure of the circuit, which could result in the circuit burning out and fire due to excessive current).

short circuit analysis is common analysis in power system faults, and in the prior art, the short circuit analysis mainly adopts auxiliary equipment for analysis, so that the efficiency is low, and the accuracy cannot be guaranteed.

disclosure of Invention

The invention provides an intelligent circuit short circuit analysis system, which solves the technical problems that in the prior art, short circuit analysis is mainly performed manually by adopting auxiliary equipment, the efficiency is low, and the accuracy cannot be guaranteed, and achieves the technical effects of reasonable system design, high efficiency, intelligence and accuracy in short circuit analysis.

In order to achieve the above object, the present application provides an intelligent circuit short analysis system, which includes:

A first evaluation unit for single-phase and panel system equipment responsibility evaluation;

A first determining unit for determining maximum and minimum short-circuit fault currents;

A first detection unit for checking the responsibility of the instantaneous and interrupted equipment;

and the second detection unit is used for checking the closing and self-locking functions of the circuit breaker.

Further, the system comprises a second evaluation unit for evaluating the symmetrical or rated total circuit breaker.

Further, the system will interrupt the fault current responsibility as a function of the switch contact open time.

Further, the system is used for the user to set the contact separation time standard.

Further, the system uses three different impedance networks to form the instantaneous, interrupted, and steady state short circuit currents for the calculations.

One or more technical solutions provided by the present application have at least the following technical effects or advantages:

The technical problems that in the prior art, short circuit analysis is mainly manually carried out by adopting auxiliary equipment, efficiency is low, accuracy cannot be guaranteed are solved, and the technical effects that system design is reasonable, and short circuit analysis is efficiently, intelligently and accurately completed are achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;

Fig. 1 is a schematic diagram of the components of the intelligent analysis system for short circuit in the present application.

Detailed Description

the invention provides an intelligent circuit short circuit analysis system, which solves the technical problems that in the prior art, short circuit analysis is mainly performed manually by adopting auxiliary equipment, the efficiency is low, and the accuracy cannot be guaranteed, and achieves the technical effects of reasonable system design, high efficiency, intelligence and accuracy in short circuit analysis.

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

Referring to fig. 1, the present application provides an intelligent circuit short analysis system, which includes:

A first evaluation unit for single-phase and panel system equipment responsibility evaluation;

A first determining unit for determining maximum and minimum short-circuit fault currents;

A first detection unit for checking the responsibility of the instantaneous and interrupted equipment;

And the second detection unit is used for checking the closing and self-locking functions of the circuit breaker.

wherein, in an embodiment of the application, the system further comprises a second evaluation unit for evaluating a symmetrical or rated total circuit breaker.

wherein, in the embodiment of the application, the system takes the responsibility of interrupting the fault current as a function of the opening time of the switch contact.

in the embodiment of the application, the system is used for setting the contact separation time standard by a user.

in the embodiment of the application, the system adopts three different impedance networks to form the calculation instant, interruption and steady-state short-circuit current.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.