CN201837709U

CN201837709U - HGIS (hybrid gas insulated switchgear) on-off coil online monitoring device

Info

Publication number: CN201837709U
Application number: CN2010205850866U
Authority: CN
Inventors: 陈锡培; 贺臣
Original assignee: Guangxi China Power New Energy Electric Co ltd; Maoming Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangxi China Power New Energy Electric Co ltd; Maoming Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2010-11-01
Filing date: 2010-11-01
Publication date: 2011-05-18
Anticipated expiration: 2020-11-01

Abstract

The utility model discloses a HGIS (hybrid gas insulated switchgear) on-off coil online monitoring device, which comprises a hall sensor, a signal conditioning circuit, an A/D conversion module, a monitoring display unit, a central processing unit and a data storage module. The hall sensor is accessed to an on-off coil loop, measured current/voltage signals of an on-off coil are processed by the conditioning circuit prior to being converted into digital signals through the A/D conversion module, the digital signals are recorded and stored by the central processing unit, and then the digital signals together with preset data are analyzed before corresponding on-off coil operational status indicating signals are outputted to the monitoring display unit. The HGIS on-off coil online monitoring device is capable of monitoring status of the on-off circuit online in real time, and discovering and processing the on-off coil after failure in time, thereby aiding in guaranteeing normal operation of an integral power supply network.

Description

HGIS divide-shut brake coil on-Line Monitor Device

Technical field

The utility model relates to the HGIS combined electrical apparatus in high force feed power transformation field, especially relates to a kind of HGIS divide-shut brake coil on-Line Monitor Device.

Background technology

In the Operation of Electric Systems, isolating switch branch, closing coil burnout failure often take place.When electrical equipment has an accident, if because of isolating switch tripping phenomenon appears in the breaker open operation circuit breaking, accident will be enlarged and the separating brake that occurs bypassing the immediate leadership causes large-area power-cuts, even may cause serious consequences such as power equipment burns, fire; And the closing circuit integrality is when being damaged, though smaller when the hazard ratio sub-gate circuit integrality that is caused is destroyed, it also makes circuit can not normally send electricity, has hindered the raising of power supply reliability.

Isolating switch branch, closing coil all design by switching in short-term.Burning of branch, closing coil, mainly be because divide, the electric current in closing coil loop can not normal cutoff, cause branch, the long-time energising of closing coil to cause, so necessary isolating switch branch, closing coil are carried out on-line monitoring, break down with timely discovery and organized processing branch, closing coil, need not divide by the time, closing coil burnt and just found coil fault.

The utility model content

The purpose of this utility model, promptly being to provide a kind of can carry out real-time online detection HGIS divide-shut brake coil on-Line Monitor Device to HGIS isolating switch branch, closing coil duty.

Isolating switch branch, closing coil working current have reflected the motion state and the machine performance of iron core to a great extent.Characterisitic parameter according to this electric current, can calculate iron core start-up time, run duration, coil electrify time by experimental formula, thereby can learn the motion state of iron core, and then can find the whether stroke and the isoparametric variation of iron core suction of cored catching phenomenon, iron core.That is: branch, the closing coil working current parameter that obtains according to monitoring, but whether preliminary judgement branch, closing coil fault has taken place.

According to above-mentioned principle, the utility model HGIS divide-shut brake coil on-Line Monitor Device includes Hall element, signal conditioning circuit, A/D modular converter, monitoring display unit, central processing unit and data memory modules such as amplification and filtering; Described Hall element inserts in branch, the closing coil loop, measured branch, closing coil current/voltage signal are after described modulate circuit is handled, be converted into digital signal by the A/D modular converter, write down and store this digital signal and this digital signal is carried out analyzing and processing by central processing unit again in conjunction with initialize data, to the corresponding branch of described monitoring display unit output, closing coil duty indicator signal, also can upload relevant information to higher level's computer supervisory control system simultaneously then.

The analyzing and processing that described central processing unit in the such scheme carries out digital signal comprises: when branch/closing coil when steady-state current is greater than setting value in short-term, central processing unit output branch/closing coil overcurrent alerting signal, and can simultaneously this fault be reported to higher level's computer supervisory control system; Perhaps, when branch/closing coil both end voltage during, processor output branchs/closing coil undervoltage warning signal, and can the while report to higher level's computer supervisory control system to this fault less than setting value.

The electric current and voltage that this device also can be taken all factors into consideration coil changes, to minute, the closing coil electric current analyzes, judge according to operating power: when the branch/closing coil that records in short-term the product of steady-state current value and branch/closing coil both end voltage value greater than the performance number of setting, or, isolating switch branch/closing coil actuation time is during greater than setting value, processor sends isolating switch branch/closing coil failure alarm signal, and can simultaneously this fault be reported to higher level's computer supervisory control system.

Described isolating switch branch/closing coil actuation time, get off to pick up counting from button actions or remote control order on the spot, on off state switch finish till.

The utility model HGIS divide-shut brake coil on-Line Monitor Device has following advantage: by the monitoring that the electric current and voltage of coil is changed, realization to minute, the closing coil state carries out real time on-line monitoring, can in time find and in time arrange to handle during the faults such as under-voltage, overcurrent, iron core clamping stagnation of normal appearance to isolating switch branch, closing coil, thereby guarantee the normal operation of whole supply network.

Description of drawings

Fig. 1 is the utility model HGIS divide-shut brake coil on-Line Monitor Device principle schematic.

Fig. 2 is the sub-gate circuit principle schematic.

Embodiment

Below in conjunction with accompanying drawing the utility model HGIS divide-shut brake coil on-Line Monitor Device is further described:

As shown in Figure 1, the utility model HGIS divide-shut brake coil on-Line Monitor Device includes Hall element, signal conditioning circuit, A/D modular converter, monitoring display unit, central processing unit and data memory module; Described Hall element inserts (is the example explanation with sub-gate circuit principle schematic shown in Figure 2) in branch, the closing coil loop, the measured branch of Hall element, closing coil current/voltage are after signal conditioning circuit is handled, be converted into digital signal by the A/D modular converter, write down and store this digital signal and this digital signal is carried out analyzing and processing by central processing unit again in conjunction with initialize data, to monitoring display unit output branch, closing coil corresponding work condition indicative signal, also can upload relevant information to higher level's computer supervisory control system simultaneously then.

The analyzing and processing that described central processing unit carries out digital signal is meant that when branch/closing coil when steady-state current is greater than predetermined value (for example 25%) in short-term think that promptly this element enters inspecting state, processor sends branch/closing coil overcurrent alerting signal; Perhaps, when promptly branch/closing coil voltage did not reach and requires, processor sent branch/closing coil undervoltage warning signal less than setting value (for example 85% of ratings) when branch/closing coil both end voltage.

Simultaneously, this device the branch/closing coil that records in short-term the product of steady-state current value and branch/closing coil both end voltage value greater than the performance number of setting, or isolating switch branch/closing coil actuation time, processor sent isolating switch branch/closing coil failure alarm signal during greater than setting value.Wherein, isolating switch branch, closing coil actuation time, also available breaker open operation or switching current duration monitor, when this electric current surpasses setting value, can be judged to be the isolating switch branch, the closing coil fault breaks down, for example refusing branch/refuse to close, auxiliary contact break not open or during fault such as closing coil master fuse melting.

Claims

1.HGIS divide-shut brake coil on-Line Monitor Device includes Hall element, signal conditioning circuit, A/D modular converter, monitoring display unit, central processing unit and data memory module; It is characterized in that, described Hall element inserts in branch, the closing coil loop, measured branch, closing coil current/voltage signal are after described modulate circuit is handled, be converted into digital signal by the A/D modular converter, write down and store this digital signal and this digital signal is carried out analyzing and processing by central processing unit again, then to the corresponding branch of described monitoring display unit output, closing coil duty indicator signal in conjunction with initialize data.

2. HGIS divide-shut brake coil on-Line Monitor Device according to claim 1, it is characterized in that, the analyzing and processing that described central processing unit carries out digital signal comprises: when branch/closing coil when steady-state current is greater than setting value in short-term, central processing unit sends branch/closing coil overcurrent alerting signal.

3. HGIS divide-shut brake coil on-Line Monitor Device according to claim 1, it is characterized in that, the analyzing and processing that described central processing unit carries out digital signal comprises: when branch/closing coil both end voltage during less than setting value, and processor output branch/closing coil undervoltage warning signal.

4. according to the described HGIS divide-shut brake of one of claim 1 to 3 coil on-Line Monitor Device, it is characterized in that, the analyzing and processing that described central processing unit carries out digital signal comprises: when the branch/closing coil that records in short-term the product of steady-state current value and branch/closing coil both end voltage value greater than the performance number of setting, or, isolating switch branch/closing coil actuation time, processor sent isolating switch branch/closing coil failure alarm signal during greater than setting value;