CN103683514A - Intelligentized medium-voltage switch cabinet - Google Patents

Abstract

The invention discloses an intelligentized medium-voltage switch cabinet which comprises a switch cabinet body. An electric chassis and an electric grounding switch are installed in the cabinet body, a remote controller is connected onto the electric chassis, the electric grounding switch is connected with the remote controller, current sensors are installed on the electric chassis and the electric grounding switch and connected with the remote controller, and a high-voltage circuit-breaker online monitoring device is arranged on the cabinet body. The running in and out of the electric chassis and switching of the grounding switch can be achieved through electric operation, and digitized and automatic online monitoring can be achieved according to relevant parameters. A circuit breaker handcart and the grounding switch of the switch cabinet can be remotely and electrically operated, unattended operation of a transformer substation can be achieved, and the complete power outage and supply work can be achieved under the condition that no operator is on the scene.

Description

A kind of intelligent Medium Voltage Switchgear

Technical field

The present invention relates to a kind of switch cubicle, particularly a kind of intelligent Medium Voltage Switchgear.

Background technology

Medium Voltage Switchgear, for transmission and the control of electric energy, can guarantee power equipment and operating personnel's safety.Along with the propelling of global intelligent grid technology, Intelligent transformer station is by the emphasis that is Future Development, and intelligent switchboard system is basis and the hardware carrier of Intelligent transformer station.

For a long time, mesolow voltage switchgear does not possess circuit breaker cart turnover and earthed switch deciliter electric operating ability, all by manpower manual, operated, this mode of operation is time-consuming, effort not only, more cannot adapt to the operator scheme of intelligent switchboard system, and relevant parameter can not be realized digitlization, the automation of on-line monitoring.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of intelligent Medium Voltage Switchgear for above drawback, and its electric chassis truck turnover and earthed switch deciliter have electric operating ability, and relevant parameter can be realized digitlization, the automation of on-line monitoring; The circuit breaker cart of switch cubicle and earthed switch can be realized distant place electric operating, realize transformer station's unattended operation, realize at the scene the complete power transmission work that stops in unmanned situation.

For solving the problems of the technologies described above, technical scheme of the present invention is:

A kind of intelligent Medium Voltage Switchgear, comprise cabinet, wherein, electric chassis truck is installed in cabinet, electric ground switch, on described electric chassis truck, be connected with remote controllers, described electric ground switch is connected with described remote controllers, on described electric chassis truck and electric ground switch, current inductor is installed, described current inductor is connected with described remote controllers, on described cabinet, be provided with primary cut-out on-Line Monitor Device, described primary cut-out on-Line Monitor Device comprises: for gathering the displacement sensor module of contact travel position, for judging the divide-shut brake coil current monitoring modular of divide-shut brake signal, signal conditioning circuit, high-speed AD sampling module, 485 communication modules, LCD liquid crystal interface and human-computer interaction module, switching value input/output module, RTC real-time clock module, LED light circuit and the control system based on TMS320F28335DSP.

Above-mentioned a kind of intelligent Medium Voltage Switchgear, wherein, in the on-Line Monitor Device of described primary cut-out:

(1) contact travel sensing module comprises contact travel monitoring means and displacement signal collecting unit, the latter be take the circuit that LVDT displacement transducer is core devices, the movable core of LVDT displacement transducer is structurally connected with the moving contact of primary cut-out, and its output signal is moving contact stroke signal;

(2) the main method adopting at major loop serial connection current sensing resistor of divide-shut brake coil current monitoring, converts the magnitude of voltage at resistance two ends can obtain divide-shut brake coil current signal;

(3) AD7864-2 of high-speed AD module employing TI company is core devices, and sampling precision can reach 12, can gather 4 road signals simultaneously;

(4) human-computer interaction module is usingd Beijing peace and is praised intelligent color screen that development in science and technology Co., Ltd produces as display terminal, and intelligent terminal, with touch function, can carry out alternately with slave computer;

(5) divide-shut brake control signal signal is input to DSP control system by one group of switch input terminal, and DSP control system is controlled the divide-shut brake relay of circuit breaker by another group output switching terminal;

(6) 485 communication modules and RTC real-time clock module, can communicate and record with host computer the time that storage event occurs.

Beneficial effect of the present invention is:

Circuit breaker cart and earthed switch can realize the electronic turnover in a distant place and deciliter operation, when there is stall, owing on electric chassis truck and electric ground switch, current inductor being installed, current inductor sends current signal to coupled remote controllers, remote controllers identification fault current state, returns to automatic cut-off power after home by electric chassis truck.

2. the setting of the on-Line Monitor Device of primary cut-out, can realize real time on-line monitoring as the vacuum degree of the temperature rise of main current-carrying part and joint, vacuum circuit-breaker, contact travel, the excess of stroke, divide-shut brake speed and number of times etc. for the main key parameter of switch cubicle.

Accompanying drawing explanation

Fig. 1 is structure chart of the present invention.

Fig. 2 is the structural representation of the on-Line Monitor Device hardware circuit of primary cut-out of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

Embodiment

As shown in the figure, a kind of intelligent Medium Voltage Switchgear, comprise cabinet 1, wherein, electric chassis truck 2 is installed in cabinet, electric ground switch 3, on described electric chassis truck 2, be connected with remote controllers 4, described electric ground switch 3 is connected with described remote controllers 4, described electric chassis truck 2 and electronic ground connection are opened 3 and are shut current inductor 5 is installed, described current inductor 5 is connected with described remote controllers 4, on described cabinet, be provided with primary cut-out on-Line Monitor Device 6, described primary cut-out on-Line Monitor Device 6 comprises: for gathering the displacement sensor module of contact travel position, for judging the divide-shut brake coil current monitoring modular of divide-shut brake signal, signal conditioning circuit, high-speed AD sampling module, 485 communication modules, LCD liquid crystal interface and human-computer interaction module, switching value input/output module, RTC real-time clock module, LED light circuit and the control system based on TMS320F28335DSP.

Above-mentioned a kind of intelligent Medium Voltage Switchgear, wherein, in the hardware circuit of the on-Line Monitor Device 6 of described primary cut-out:

(1) contact travel sensing module comprises contact travel monitoring means and displacement signal collecting unit, the latter be take the circuit that LVDT displacement transducer is core devices, the movable core of LVDT displacement transducer is structurally connected with the moving contact of primary cut-out, and its output signal is moving contact stroke signal;

(2) the main method adopting at major loop serial connection current sensing resistor of divide-shut brake coil current monitoring, converts the magnitude of voltage at resistance two ends can obtain divide-shut brake coil current signal;

(3) AD7864-2 of high-speed AD module employing TI company is core devices, and sampling precision can reach 12, can gather 4 road signals simultaneously;

(4) human-computer interaction module is usingd Beijing peace and is praised intelligent color screen that development in science and technology Co., Ltd produces as display terminal, and intelligent terminal, with touch function, can carry out alternately with slave computer;

(5) divide-shut brake control signal signal is input to DSP control system by one group of switch input terminal, and DSP control system is controlled the divide-shut brake relay of circuit breaker by another group output switching terminal;

(6) 485 communication modules and RTC real-time clock module, can communicate and record with host computer the time that storage event occurs.

By the description of this embodiment, make accuracy, the robustness of this primary cut-out on-Line Monitor Device monitoring reach the requirement of expection, have irrelevant with the voltage and current size of a circuit, antijamming capability is strong, system accuracy advantages of higher.

Compared with prior art, beneficial effect of the present invention is:

Circuit breaker cart and earthed switch can realize the electronic turnover in a distant place and deciliter operation, when there is stall, owing on electric chassis truck and electric ground switch, current inductor being installed, current inductor sends current signal to coupled remote controllers, remote controllers identification fault current state, returns to automatic cut-off power after home by electric chassis truck.

2. the setting of the on-Line Monitor Device of primary cut-out, can realize real time on-line monitoring as the vacuum degree of the temperature rise of main current-carrying part and joint, vacuum circuit-breaker, contact travel, the excess of stroke, divide-shut brake speed and number of times etc. for the main key parameter of switch cubicle.

The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.

Claims (2)

1. an intelligent Medium Voltage Switchgear, comprise cabinet, it is characterized in that, electric chassis truck is installed in cabinet, electric ground switch, on described electric chassis truck, be connected with remote controllers, described electric ground switch is connected with described remote controllers, on described electric chassis truck and electric ground switch, current inductor is installed, described current inductor is connected with described remote controllers, on described cabinet, be provided with primary cut-out on-Line Monitor Device, described primary cut-out on-Line Monitor Device comprises: for gathering the displacement sensor module of contact travel position, for judging the divide-shut brake coil current monitoring modular of divide-shut brake signal, signal conditioning circuit, high-speed AD sampling module, 485 communication modules, LCD liquid crystal interface and human-computer interaction module, switching value input/output module, RTC real-time clock module, LED light circuit and the control system based on TMS320F28335 DSP.

2. a kind of intelligent Medium Voltage Switchgear as claimed in claim 1, is characterized in that, in the on-Line Monitor Device of described primary cut-out:

(1) contact travel sensing module comprises contact travel monitoring means and displacement signal collecting unit, the latter be take the circuit that LVDT displacement transducer is core devices, the movable core of LVDT displacement transducer is structurally connected with the moving contact of primary cut-out, and its output signal is moving contact stroke signal;

(2) the main method adopting at major loop serial connection current sensing resistor of divide-shut brake coil current monitoring, converts the magnitude of voltage at resistance two ends can obtain divide-shut brake coil current signal;

(3) AD7864-2 of high-speed AD module employing TI company is core devices, and sampling precision can reach 12, can gather 4 road signals simultaneously;

(4) human-computer interaction module is usingd Beijing peace and is praised intelligent color screen that development in science and technology Co., Ltd produces as display terminal, and intelligent terminal, with touch function, can carry out alternately with slave computer;

(5) divide-shut brake control signal signal is input to DSP control system by one group of switch input terminal, and DSP control system is controlled the divide-shut brake relay of circuit breaker by another group output switching terminal;

(6) 485 communication modules and RTC real-time clock module, can communicate and record with host computer the time that storage event occurs.

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