CN202204671U

CN202204671U - High-voltage circuit breaker mechanical feature detection device

Info

Publication number: CN202204671U
Application number: CN2011203247686U
Authority: CN
Inventors: ***; 赵海森; 刘玲; 武笑东; 王建伟; 刘文强; 胡德恩; 曲丽红
Original assignee: JINZHONG POWER SUPPLY COMPANY SHANXI ELECTRIC POWER Co
Current assignee: JINZHONG POWER SUPPLY COMPANY SHANXI ELECTRIC POWER Co
Priority date: 2011-09-01
Filing date: 2011-09-01
Publication date: 2012-04-25
Anticipated expiration: 2021-09-01

Abstract

The utility model discloses a high-voltage circuit breaker mechanical feature detection device, and belongs to the technical field of high-voltage circuit breaker mechanical feature detection. The technical problem to be solved is to provide a detection device which is advanced in detection principle, reliable in measurement data and low in maintenance cost. The adopted technical scheme is that: a Hall current sensor is hung on a secondary side direct current line of a high-voltage circuit breaker; the output end of the Hall current sensor is connected with the input end of a data conditioning circuit; the output end of the data conditioning circuit is in series connected with a photoelectric isolation module and an analogue-to-digital (A/D) conversion module in turn and then is connected with the input end of a central processing unit (CPU). The high-voltage circuit breaker mechanical feature detection device is suitable for the field such as transformer stations and the like.

Description

Primary cut-out mechanical property pick-up unit

Technical field

The utility model primary cut-out mechanical property pick-up unit belongs to primary cut-out mechanical property detection technique field.

Background technology

The online detection of mechanical property is the important content of primary cut-out state monitoring, for detecting, identify that the mechanical property of isolating switch has important meaning; Intrinsic branch/closing time, speed, three-phase action consistency are the important parameters that can primary cut-out reliably working; The actuation time of primary cut-out is short, vibrates during action greatly, and early stage pick-up unit is because the level of Sampling techniques and sensor technology is limit, and for the detection of these transient parameters, especially the detection to " initial trigger " action lacks believable detection means; Along with the development of modern industrial technology, at present novel breaker open apart from little, speed is fast, and is harsh more to the requirement of primary cut-out testing mechanical characteristic appearance.

Consider that from economic angle power department also need reduce the operation and the maintenance cost of electric system simultaneously when improving constantly the quality of power supply; Therefore the theory of " reliability maintenance " progressively is incorporated into power department; Primary cut-out adopts the scheduled overhaul system for a long time, checks regularly to guarantee in the electrical equipment operate as normal, has played really to prevent or the effect of delay fault; But it is this not according to the actual conditions of equipment; At interval equipment is overhauled in required time merely, can cause loss and the human and material resources of operational use time, the waste of financial resources, also can cause maintenance failure sometimes; How to avoid the periodic maintenance mode of traditional costliness also to become a difficult point of the online detection of mechanical property.

The utility model content

The utility model overcomes the deficiency that prior art exists, and technical matters to be solved is: provide a kind of detection principle advanced, reliable measuring data, the pick-up unit that maintenance cost is low.

For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: primary cut-out mechanical property pick-up unit comprises: Hall current sensor, data conditioning circuit, photoelectric isolation module, A/D modular converter, CPU module;

Hall current sensor is articulated on the primary cut-out secondary side DC line, and the output terminal of Hall current sensor connects the input end of data modulate circuit; The output terminal of said data conditioning circuit is connected in series the input end that connects the CPU module behind photoelectric isolation module and the A/D modular converter successively.

The beneficial effect that the utility model compared with prior art has is:

One, principle is advanced, high-acruracy survey: the utility model adopts the electric current in the Hall current sensor monitoring primary cut-out secondary side DC line; Can online or off-line test circuit-breaker status; When carrying out on-line testing; Test macro does not need directly to contact with the high-pressure section of isolating switch; Make full use of reliability isolating switch detection platform and carry out " initial trigger " capturing ability of circuit-breaker status monitoring, better grasp the practical operation situation of on-line operation isolating switch; Different with traditional method, device can be analyzed its separating brake situation for the first time through the isolating switch in the test and maintenance; This point is extremely important, because it can embody the separating brake situation of isolating switch in operational process.

Two, economical and practical: the utility model provides a kind of brand-new isolating switch testing tool to power department; Accomplish the single test in several minutes; Accomplished the test of whole substation breakers in 1-2 hour, the periodic maintenance mode that this can be avoided traditional costliness obtains most economical maintenance cost.

Description of drawings

Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation.

Fig. 1 is the electrical block diagram of the utility model.

Among the figure: 1 is that primary cut-out secondary side DC line, 2 is that Hall current sensor, 3 is that data conditioning circuit, 4 is that photoelectric isolation module, 5 is that A/D modular converter, 6 is the CPU module.

Embodiment

As shown in Figure 1, the utility model primary cut-out mechanical property pick-up unit comprises: Hall current sensor 2, data conditioning circuit 3, photoelectric isolation module 4, A/D modular converter 5, CPU module 6;

Hall current sensor 2 is articulated on the primary cut-out secondary side DC line 1, and the output terminal of Hall current sensor 2 connects the input end of data modulate circuit 3; The output terminal of said data conditioning circuit 3 is connected in series the input end that connects CPU module 6 behind photoelectric isolation module 4 and the A/D modular converter 5 successively.

Above-mentioned Hall current sensor 2 adopts punching magnetic balance type zero magnetic flux Hall current sensor, and above-mentioned remaining circuit, module are prior art; When flowing through electric current on the primary cut-out secondary side DC line 1 and be higher than the triggering level, beginning is test once, makes full use of " initial trigger " capturing ability that reliability isolating switch detection platform is carried out the circuit-breaker status monitoring; The better practical operation situation of grasping the on-line operation isolating switch; Its separating brake situation for the first time can be analyzed through the isolating switch in the test and maintenance, the separating brake situation of isolating switch in operational process can be embodied.

The utility model is simple in structure, handled easily, and single test required time is short, is the effective means that realizes " reliability maintenance ", obtains most economical maintenance cost.

Claims

1. primary cut-out mechanical property pick-up unit comprises: Hall current sensor (2), data conditioning circuit (3), photoelectric isolation module (4), A/D modular converter (5), CPU module (6); It is characterized in that:

Hall current sensor (2) is articulated on the primary cut-out secondary side DC line (1), and the output terminal of Hall current sensor (2) connects the input end of data modulate circuits (3); The output terminal of said data conditioning circuit (3) is connected in series the input end that connects CPU module (6) behind photoelectric isolation module (4) and the A/D modular converter (5) successively.