CN201966531U - HGIS (hybrid gas insulated switchgear) combined electrical apparatus on-line monitoring device and integration HGIS intelligent combined electrical apparatus - Google Patents
HGIS (hybrid gas insulated switchgear) combined electrical apparatus on-line monitoring device and integration HGIS intelligent combined electrical apparatus Download PDFInfo
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- CN201966531U CN201966531U CN2010205848368U CN201020584836U CN201966531U CN 201966531 U CN201966531 U CN 201966531U CN 2010205848368 U CN2010205848368 U CN 2010205848368U CN 201020584836 U CN201020584836 U CN 201020584836U CN 201966531 U CN201966531 U CN 201966531U
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Abstract
The utility model discloses an HGIS (hybrid gas insulated switchgear) combined electrical apparatus on-line monitoring device and an integration HGIS intelligent combined electrical apparatus, which comprises a monitoring display unit and a plurality of on-line monitoring units. A signal input end of each on-line monitoring unit is electrically connected with a corresponding assembly of the HGIS combined electrical apparatus respectively, and a signal output end of each on-line monitoring unit is electrically connected with the monitoring display unit and a superior computer monitoring system respectively. Each on-line monitoring unit comprises one or more of a circuit breaker opening solenoid/ closing solenoid on-line monitoring unit, a circuit breaker energy storage on-line monitoring unit, an SF6 (sulphur hexafluoride) high-voltage circuit breaker electrical durability monitoring unit and an SF6 gas density monitoring unit. The device utilizes on-line monitoring technology to realize condition monitoring of a plurality of assemblies, such as a circuit breaker, an isolating switch control equipment, a control circuit, so that the equipment disconnection time and the switching operation amount are greatly reduced, developmental defects during equipment operation can be discovered timely, and accordingly, the reliability, the economical efficiency and the safety of the power supply of an electrical power system are improved.
Description
Technical field
The utility model relates to the HGIS combined electrical apparatus in the high pressure power transmission and distribution field, especially relates to a kind of HGIS combined electrical apparatus on-Line Monitor Device.
Background technology
The construction of China's intelligent substation has progressively entered a Rapid development stage, an intellectuality that key technology is a primary equipment of intelligent substation, a switch of intelligent substation use at present has three types: traditional porcelain knob (AIS) switch, GIS combined electrical apparatus and HGIS combined electrical apparatus.HGIS (Hybrid Gas Insulated Switchgear) is a kind of novel high-pressure switchgear between conventional air insulation switchgear (AIS) and gas-insulated switchgear (GIS).Structure and the GIS of HGIS are basic identical, set such as circuit breaker, isolation/ground connection unit switch, current transformer are become a module, but it does not comprise bus equipment; Its advantage is that bus is not loaded on the SF6 air chamber, expose, thereby wiring is clear, succinct, compact, and installation and Maintenance and Repair are convenient, the operational reliability height.
Circuit breaker and isolating/grounding switch are control devices important in the electric power system, and frequent in daily operation in service, failure rate is than higher.Traditional HGIS combined electrical apparatus, do not possess on-line monitoring circuit breaker energy storage motor electric current, closing coil electric current, switching winding electric current, and functions such as isolation knife current of electric, control loop voltage, its maintenance and management mainly is that relying on the deciding inspection, patrol and examine of equipment, spot check and preventive trial is main scheduled overhaul.Based on the production management system of the information such as machine account, log, maintenance record, defect record and pre-trial record of equipment be one to be recorded as information system main static state, off-line, its poor in timeliness does not possess and analyzes and diagnostic function.The prerun data obtain under power down mode as the main foundation of judgment device running status, and having a power failure not only influences the business economic benefit, and the data refer of obtaining is poor.
The utility model content
In order to carry out equipment condition monitoring to operating HGIS combined electrical apparatus effectively, the utility model provides a kind of HGIS combined electrical apparatus on-Line Monitor Device.
Existing HGIS combined electrical apparatus generally includes circuit breaker, sleeve pipe, instrument transformer, enclosed type grounded metal tank body and is fixedly installed in the interior isolation/ground connection three-station of this tank body.The utility model HGIS combined electrical apparatus on-Line Monitor Device includes monitoring display unit and several on-line monitoring unit; The signal input part of each on-line monitoring unit is electrically connected with the corresponding assembly of described HGIS combined electrical apparatus respectively, and each signal output part is electrically connected to described monitoring display unit and higher level's computer supervisory control system; Described on-line monitoring unit includes one or more in circuit breaker branch/closing coil on-line monitoring unit, circuit breaker energy storage motor on-line monitoring unit, SF6 primary cut-out electric life monitoring means, the SF6 gas density monitoring means:
(1) circuit breaker branch/closing coil on-line monitoring unit
Circuit breaker branch/closing coil operating current has 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 empirical equation, 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 operating current parameter that obtains according to monitoring, but whether preliminary judgement branch, closing coil fault has taken place.
According to above-mentioned principle, this circuit breaker branch/closing coil on-line monitoring unit includes Hall element, signal conditioning circuit, A/D modular converter, 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 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 operating state index signal in conjunction with initialize data.
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 set point in short-term, central processing unit sends branch/closing coil overcurrent alarm signal; Perhaps, when branch/closing coil both end voltage during less than set point, processor sends branch/closing coil undervoltage warning signal, and reports to higher level's computer supervisory control system.
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, circuit breaker branch/closing coil operate time is during greater than set point, processor sends circuit breaker branch/closing coil failure alarm signal, and this fault is reported to higher level's computer supervisory control system.
Described circuit breaker branch/closing coil operate time, get off to pick up counting from button actions or remote control order on the spot, on off state switch finish till.
The monitoring that this circuit breaker branch/closing coil on-line monitoring unit changes by the electric current and voltage to coil, 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 circuit breaker branch, closing coil.
(2) circuit breaker energy storage motor on-line monitoring unit
This circuit breaker divides energy storage motor on-line monitoring unit, includes Hall element, signal conditioning circuit, A/D modular converter, central processing unit and data memory modules such as amplification and filtering; Described Hall element inserts in the energy storage motor loop, measured energy storage motor current/voltage is after 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, export corresponding energy storage motor operating state index signal to described monitoring display unit then in conjunction with initialize data.
The analyzing and processing that described central processing unit in the such scheme carries out digital signal comprises: when the energy storage motor that records when steady-state current is greater than set point in short-term, central processing unit is exported energy storage motor overcurrent alarm signal, and this fault is reported to higher level's computer supervisory control system; Perhaps, when energy storage motor both end voltage during less than set point, processor output energy storage motor undervoltage warning signal reports to higher level's computer supervisory control system to this fault simultaneously.
This circuit breaker divides energy storage motor on-line monitoring unit also can realize the spring energy-storage time supervision: calculate the spring energy-storage time (energy storage motor running current curve can referring to accompanying drawing 8) according to the opisometer of energy storage motor running current.According to the characteristics of electric motor starting, stable operation and shutdown, can obtain the steady-state current of coil, utilize this electric current to participate in calculating power of motor again.Be applied in this device, be: when the energy storage motor that records in short-term the product of steady-state current value and energy storage motor both end voltage value greater than the performance number of setting, or, (this situation is not action of energy storage motor to surpass the not energy storage of setting-up time circuit breaker energy storage motor behind the breaker closing, be that above-mentioned performance number is zero) time, processor sends circuit breaker energy storage motor failure alarm signal, and this fault is reported to higher level's computer supervisory control system.
(3) SF6 primary cut-out electric life monitoring means
The accumulative total drop-out current of circuit breaker is the important parameter that characterizes its electrical endurance situation, can calculate contact electrical wear situation to this monitoring, can diagnose the electric life of circuit breaker according to the electric life computing formula.
Described SF6 primary cut-out electric life monitoring means includes current sensor, optical fiber, photoelectric switching circuit, central processing unit that order is electrically connected; It is characterized in that: collect the drop-out current signal of circuit breaker by described current sensor, be sent to described photoelectric switching circuit through optical fiber; The signal of telecommunication of described photoelectric switching circuit output is calculated electric life and the residual life thereof that obtains circuit breaker at described central processing unit with the weighted cumulative method, and provides alarm prompt according to threshold value.
Described current sensor can adopt the Rogowski coil current sensor.
This SF6 primary cut-out electric life monitoring principle is analyzed: the electrical wear degree of supposing at every turn to cut-off operation is the same.If the electrical wear that single cut-offs under the rated short circuit drop-out current condition is M, corresponding permission open and close times is N.From statistical accumulative total effect, can think that the permission wearing and tearing total amount of this circuit breaker is M*N.The contact permission wearing and tearing total amount that defines a brand-new circuit breaker in other words is 100, and promptly its relative electric life is 100, and the relative wear when then each rated short circuit drop-out current is cut-off is that 1/N (is defined as Q
M).Then according to the N of different circuit breakers
1-Ic curve, the correspondence of trying to achieve any big or small drop-out current Ic allows open and close times N
1, then the relative electrical wear of cut-offfing of Dui Ying single is 1/N
1(being defined as Qm).Relative electrical wear amount in the time of can obtaining arbitrary time cut-off like this:
Q
M＝1/N，Qm＝1/N
1 (1)
Absolute electrical wear total amount according to contact is certain, then has:
Q
M*N＝Qm*N
1，M*N＝m*N
1 (2)
So, Qm/Q
M=N/N
1=m/M (3)
Qm＝Q
M*(m/M)＝(1/N)*m/M (4)
Can obtain the relative electric life of this circuit breaker
L＝L
N-∑Qm (5)
In the formula, L
NBeing the initial value of contact of breaker electric life, is one ≯ 1 percentage, and its value is by operation of circuit breaker decision, just put into operation or can be 1 through its value of circuit breaker after the overhaul.
Primary cut-out accumulative total is cut-off n time electrical wear amount
I in the formula
iIt is the current value of the i time disconnection; A is a weight coefficient, and 1＜a＜2 can be obtained by the electric life curve of circuit breaker.If under the rated short circuit drop-out current, the electrical wear that standard is cut-off is M, allows the inferior N that cut-offs.From statistical average and accumulative total effect, can think that the permission wearing and tearing total amount of this primary cut-out is N*M.If the new contact of breaker life-span is close to 100%, can cut-off time I under the specified drop-out current
e, promptly specified open and close times is N time, the relative wear amount during then each drop-out current is 1/N.According to the equivalent wear curve N/I of different circuit breakers, can obtain the pairing open and close times N of different drop-out currents
X, it is 1/Nx that corresponding single cut-offs the relative wear amount, is defined as Q m, the accumulative total relative wear is ∑ Qm, relatively electric life L=L
0-Q.L
0The≤1st, the initial value of electric life.L and threshold value are compared, provide alarm or information.This method only need be known the size of each drop-out current, fairly simple practicality.
This SF6 primary cut-out electric life monitoring means according to above-mentioned principle development has following characteristics and advantage:
(1) is convenient to simultaneously each the phase electrical wear and the electric life of all circuit breakers of a transformer station are monitored in real time.When circuit breaker cut-offs, the no-load voltage ratio record drop-out current of the current transformer of this circuit breaker of can be at any time setting according to the user, and obtain corresponding electrical wear relatively by the model of different circuit breaker electrics wearing and tearing, draw the present relative electric life of circuit breaker; When the electric life of circuit breaker then, send alarm signal.
(2) for operation department grasps the situation of circuit breaker and the predicted life means of providing convenience, too early or unnecessary power failure test and maintenance can be reduced, the reliability and the economy of electric power system can be significantly improved.
(4) SF6 gas density monitoring means
The density of SF6 in air chamber is to guarantee insulation, the basic assurance of arc extinguishing smoothly, and whether it satisfies the switchgear designing requirement, is the precondition that guarantees the normal operation of switch.To this monitoring,, send different instructions or warning according to different density.
This SF6 gas density monitoring means includes gas density transmitter, A/D modular converter and the central processing unit that order is electrically connected; Can also include data memory module.
When the HGIS of routine combined electrical apparatus is integrated with the HGIS combined electrical apparatus on-Line Monitor Device of technique scheme, then formed the integrated form HGIS intelligence combined electrical apparatus of tape jam self-diagnostic function.
The utility model HGIS combined electrical apparatus on-Line Monitor Device is owing to utilized on-line monitoring technique, can realize the status monitoring of a plurality of assemblies such as circuit breaker, isolation switch control appliance and control circuit of HGIS combined electrical apparatus, can gather the operating current of energy storage motor, isolation switch control motor, switching winding, breaking coil, and electric current and voltage waveform can recording operation the time, offer the backstage and analyze; Can gather the control voltage of each control loop, to realize monitoring to control loop; Can write down the historical information of switching manipulation, the number of operations and the operating time of statistics circuit breaker and isolating switch, the electric current of operation circuit when record is operated at every turn, thus have following advantage:
(1) significantly reduces interruption duration and switching manipulation amount;
(2) continue, accurately reflect insulation property and the general level of the health of equipment under working voltage;
(3) the timely operating developing fault of discovering device significantly reduces sudden accident;
(4) reliability, economy and the fail safe of raising power system power supply;
(5) prolonged the equipment operation life-span, made plant maintenance science more;
(6) save a large amount of maintenance of equipment funds.
Description of drawings
Fig. 1 is the composition structural representation of integrated form HGIS intelligence combined electrical apparatus.
Fig. 2 is the composition frame chart of an embodiment of the utility model intelligence HGIS combined electrical apparatus on-Line Monitor Device.
Fig. 3 is the structural representation of an embodiment of the integrated form HGIS intelligence combined electrical apparatus of combination tape jam self-diagnostic function that the utility model intelligence HGIS combined electrical apparatus on-Line Monitor Device is arranged.
Fig. 4 is the principle schematic of HGIS circuit breaker branch/embodiment in closing coil on-line monitoring unit.
Fig. 5 is a HGIS breaker open operation circuit theory schematic diagram.
Fig. 6 is the principle schematic of the HGIS circuit breaker energy storage motor on-line monitoring embodiment in unit.
Fig. 7 is an energy storage motor circuit theory schematic diagram.
Fig. 8 is a circuit breaker energy storage motor running current curve.
Fig. 9 is the principle schematic of an embodiment of SF6 primary cut-out electric life monitoring means.
Embodiment
Below in conjunction with accompanying drawing the utility model HGIS combined electrical apparatus on-Line Monitor Device is further described:
As shown in Figure 1, integrated form HGIS intelligence combined electrical apparatus includes circuit breaker 1, instrument transformer 2 and 5, sleeve pipe 3, tank body 4 (there is isolating/grounding switch inside), intelligent convergence control cabinet 6.The utility model HGIS combined electrical apparatus on-Line Monitor Device can be integrated in the intelligent convergence control cabinet 6.Fig. 2 is the composition frame chart of an embodiment of the utility model intelligence HGIS combined electrical apparatus on-Line Monitor Device.This HGIS combined electrical apparatus on-Line Monitor Device as shown in Figure 2 includes monitoring display unit (Fig. 2 part omitted) and circuit breaker branch/closing coil on-line monitoring unit, circuit breaker energy storage motor on-line monitoring unit, SF6 primary cut-out electric life monitoring means; The signal input part of each on-line monitoring unit is electrically connected with the corresponding assembly of described HGIS combined electrical apparatus respectively, and each signal output part is electrically connected to described monitoring display unit and higher level's computer supervisory control system:
(1) circuit breaker branch/closing coil on-line monitoring unit
As shown in Figure 4, this HGIS circuit breaker branch, closing coil on-line monitoring unit include Hall element, signal conditioning circuit, A/D modular converter, central processing unit and data memory module; Described Hall element seals in (is the example explanation with sub-gate circuit principle schematic shown in Figure 5) in branch, the closing coil loop, the measured branch of Hall element, closing coil current/voltage signal are after signal conditioning circuit is handled, be converted into digital signal by the A/D modular converter, again by central processing unit record and store this digital signal and this digital signal is carried out analyzing and processing and exported the relevant work condition indicative signal in conjunction with initialize data.
The analyzing and processing that described central processing unit carries out digital signal is meant when branch/closing coil when steady-state current is greater than predetermined value (for example 25%) in short-term, thinks that promptly this element enters inspecting state.This moment, processor sent the overcurrent alarm signal, and fault is reported to higher level's computer supervisory control system.Perhaps, when branch/closing coil both end voltage is that the divide-shut brake coil voltage does not reach when requiring less than set point (for example 85% of rated value), processor sends branch/closing coil undervoltage warning signal, and fault is reported to higher level's computer supervisory control system.
Simultaneously, this unit 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, circuit breaker branch/closing coil operate time is during greater than set point, processor sends circuit breaker branch/closing coil failure alarm signal, simultaneously fault upload is delivered to higher level's computer supervisory control system.Wherein, circuit breaker branch, closing coil operate time, also available breaker open operation or switching current duration monitor, when this current duration surpasses set point, can be judged to be circuit breaker branch/closing coil fault breaks down, for example refuse branch and refuse to close, auxiliary contact break not open or closing coil master fuse melting etc.
(2) circuit breaker energy storage motor on-line monitoring unit
As shown in Figure 6, this circuit breaker energy storage motor on-line monitoring unit includes Hall element, signal conditioning circuit, A/D modular converter, central processing unit and data memory module; Described Hall element inserts (is the example explanation with energy storage motor circuit theory schematic diagram shown in Figure 7) in the energy storage motor loop, the measured energy storage motor current/voltage signal of Hall element is 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, export corresponding energy storage motor operating state index signal then in conjunction with initialize data.
The analyzing and processing that described central processing unit carries out digital signal is meant when energy storage motor when steady-state current is greater than predetermined value (for example 25%) in short-term, thinks that promptly this element enters inspecting state.This moment, processor sent the overcurrent alarm signal, and was uploaded to higher level's computer supervisory control system.Perhaps, when the energy storage motor both end voltage is that energy storage motor voltage does not reach when requiring less than set point (for example 85% of rated value), processor sends energy storage motor undervoltage warning signal, and fault is reported to higher level's computer supervisory control system.
Simultaneously, this unit the energy storage motor that records in short-term the product of steady-state current value and energy storage motor both end voltage value greater than the performance number of setting, or, when surpassing not energy storage of setting-up time circuit breaker energy storage motor (being that above-mentioned performance number is zero) behind the breaker closing, processor sends circuit breaker energy storage motor failure alarm signal, simultaneously fault upload is delivered to higher level's computer supervisory control system.
(3) SF6 primary cut-out electric life monitoring means
As shown in Figure 9, this SF6 primary cut-out electric life monitoring means includes current sensor, optical fiber, photoelectric switching circuit, central processing unit that order is electrically connected; Collect the drop-out current signal of circuit breaker by described current sensor, be sent to described photoelectric switching circuit through optical fiber; The signal of telecommunication of described photoelectric switching circuit output is calculated electric life and the residual life thereof that obtains circuit breaker at described central processing unit with the weighted cumulative method, and provides alarm prompt according to threshold value.
Described current sensor can adopt the Rogowski coil current sensor.
(4) SF6 gas density monitoring means
Join shown in Figure 3, described SF6 gas density monitoring means includes gas density transmitter (sending relay as German WIKA electronic type gas density change), as the measuring component that directly is installed on the HGIS equipment, the 4-20mA signal of its output enters the AD7606 sampling after signal condition and I/V conversion.
Fig. 3 is the structural representation of an embodiment of the integrated form HGIS intelligence combined electrical apparatus of combination tape jam self-diagnostic function that the utility model intelligence HGIS combined electrical apparatus on-Line Monitor Device is arranged.
Fig. 8 is a circuit breaker energy storage motor running current curve.Motor current waveform distorts, elongated, the time-variance from electrical power to the corresponding vibration incident of electric duration etc. all is the performance that there is potential faults in the circuit breaker transmission mechanism; Spring energy-storage electric motor loop current waveform has reflected the situation of motor body and spring energy agency.By the monitoring current wave form varies, has positive effect to finding the breaker mechanism potential faults.Similarly, the current waveform in breaker open operation wire loop and closing coil loop has reflected electromagnet itself and the working condition of divide-shut brake release in operating process of being controlled, and the variation of circuit breaker transmission mechanism also directly influences divide-shut brake coil current wave form varies; Isolating/grounding switch electric motor loop current waveform has reflected the situation of isolating motor body and isolating/grounding switch controlling organization.
The utility model can adopt the TBC series high-precision hall influenza device that conducts electricity to gather the current signal in three loops.The Hall element that respectively the DC simulation signal in above-mentioned four loops is passed separately during installation gets final product, and sampling A can adopt sampling 16 bit resolution high speed analog-to-digital conversion chip AD7606.
Claims (10)
1.HGIS combined electrical apparatus on-Line Monitor Device, described HGIS combined electrical apparatus include circuit breaker, sleeve pipe, instrument transformer, enclosed type grounded metal tank body and are fixedly installed in the interior isolation/ground connection three-station of this tank body; It is characterized in that: this HGIS combined electrical apparatus on-Line Monitor Device includes monitoring display unit and several on-line monitoring unit; The signal input part of each on-line monitoring unit is electrically connected with the corresponding assembly of described HGIS combined electrical apparatus respectively, and each signal output part is electrically connected to described monitoring display unit and higher level's computer supervisory control system;
Described on-line monitoring unit includes one or more in circuit breaker branch/closing coil on-line monitoring unit, circuit breaker energy storage motor on-line monitoring unit, SF6 primary cut-out electric life monitoring means, the SF6 gas density monitoring means;
Described circuit breaker branch/closing coil on-line monitoring unit includes Hall element, signal conditioning circuit, A/D modular converter, central processing unit and data memory module; 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 operating state index signal in conjunction with initialize data;
Described circuit breaker energy storage motor on-line monitoring unit includes Hall element, signal conditioning circuit, A/D modular converter, central processing unit and data memory module; Described Hall element inserts in the energy storage motor loop, measured energy storage motor current/voltage signal is 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, export corresponding energy storage motor operating state index signal to described monitoring display unit then in conjunction with initialize data;
Described SF6 primary cut-out electric life monitoring means includes current sensor, optical fiber, photoelectric switching circuit, central processing unit that order is electrically connected; Collect the drop-out current signal of circuit breaker by described current sensor, be sent to described photoelectric switching circuit through optical fiber; The signal of telecommunication of described photoelectric switching circuit output is calculated electric life and the residual life thereof that obtains this circuit breaker at described central processing unit with the weighted cumulative method, and provides alarm prompt according to threshold value.
2. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1, it is characterized in that, described circuit breaker branch/closing coil on-line monitoring unit, the analyzing and processing that its central processing unit logarithm word signal carries out comprises: when branch/closing coil when steady-state current is greater than set point in short-term, central processing unit sends branch/closing coil overcurrent alarm signal.
3. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1, it is characterized in that, described circuit breaker branch/closing coil on-line monitoring unit, the analyzing and processing that its central processing unit logarithm word signal carries out comprises: when branch/closing coil both end voltage during less than set point, processor sends branch/closing coil undervoltage warning signal.
4. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1, it is characterized in that, described circuit breaker branch/closing coil on-line monitoring unit, the analyzing and processing that its central processing unit logarithm word signal carries out 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, circuit breaker branch/closing coil operate time, processor sent circuit breaker branch/closing coil failure alarm signal during greater than set point;
Described circuit breaker branch/closing coil operate time, get off to pick up counting from button actions or remote control order on the spot, on off state switch finish till.
5. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1, it is characterized in that, described circuit breaker energy storage motor on-line monitoring unit, the analyzing and processing that its central processing unit logarithm word signal carries out comprises: when energy storage motor when steady-state current is greater than set point in short-term, and central processing unit output energy storage motor overcurrent alarm signal.
6. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1, it is characterized in that, described circuit breaker energy storage motor on-line monitoring unit, the analyzing and processing that its central processing unit logarithm word signal carries out comprises: when energy storage motor both end voltage during less than set point, and processor output energy storage motor undervoltage warning signal.
7. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1, it is characterized in that, described circuit breaker energy storage motor on-line monitoring unit, the analyzing and processing that its central processing unit logarithm word signal carries out comprises: when the energy storage motor that records in short-term the product of steady-state current value and energy storage motor both end voltage value greater than the performance number of setting, or, surpass setting-up time circuit breaker energy storage motor behind the breaker closing not during energy storage, processor sends circuit breaker energy storage motor failure alarm signal.
8. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1 is characterized in that: the current sensor in the described SF6 primary cut-out electric life monitoring means is the Rogowski coil current sensor.
9. HGIS combined electrical apparatus on-Line Monitor Device according to claim 1 is characterized in that, described SF6 gas density monitoring means includes gas density transmitter, A/D modular converter and the central processing unit that order is electrically connected.
10. integrated form HGIS intelligence combined electrical apparatus includes the HGIS combined electrical apparatus, and it is characterized in that: described HGIS combined electrical apparatus is integrated with as the described HGIS combined electrical apparatus of one of claim 1 to 9 on-Line Monitor Device.
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| CN102955129A (en) * | 2012-11-16 | 2013-03-06 | 四川省电力公司内江电业局 | Energy saving mechanism running state detection device |
| CN104019975A (en) * | 2014-06-13 | 2014-09-03 | 西安交通大学 | On-line monitoring system for high-voltage GIS mechanical states |
| CN104267294A (en) * | 2014-10-17 | 2015-01-07 | 东南大学 | IGIS fault online diagnostic method based on rough set theory and Petri network |
| CN105790430A (en) * | 2016-04-29 | 2016-07-20 | 中电新源智能电网科技有限公司 | Quick-switching combined electrical appliance |
| CN106443433A (en) * | 2016-10-18 | 2017-02-22 | 国家电网公司 | Monitoring system and monitoring method for circuit breaker state based on divide-shut brake coil current |
| CN106911121A (en) * | 2017-04-21 | 2017-06-30 | 贵州电网有限责任公司 | A kind of guard method of intelligent breaker closing coil protection device |
| CN110208688A (en) * | 2019-05-09 | 2019-09-06 | 石家庄科林电气股份有限公司 | A kind of failure pre-judging method of breaker energy storage motor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955129A (en) * | 2012-11-16 | 2013-03-06 | 四川省电力公司内江电业局 | Energy saving mechanism running state detection device |
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| CN110208688A (en) * | 2019-05-09 | 2019-09-06 | 石家庄科林电气股份有限公司 | A kind of failure pre-judging method of breaker energy storage motor |
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