CN207382059U - Straight-flow system busbar and feeder line branch switch condition monitoring system - Google Patents
Straight-flow system busbar and feeder line branch switch condition monitoring system Download PDFInfo
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- CN207382059U CN207382059U CN201721459778.4U CN201721459778U CN207382059U CN 207382059 U CN207382059 U CN 207382059U CN 201721459778 U CN201721459778 U CN 201721459778U CN 207382059 U CN207382059 U CN 207382059U
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Abstract
The utility model is related to a kind of straight-flow system busbar and feeder line branch switch condition monitoring system, including：Several outgoing line sides respectively with each switch are connected, so as to monitor the on off state monitoring device of the virtual condition of switch and output state monitoring signal in real time according to the voltage of outgoing line side；It is connected with each on off state monitoring device, so as to the switch acquisition device for gathering the corresponding condition monitoring signal of each switch and uploading；It is connected with switch acquisition device, judges whether each switch is abnormal and in the monitoring device of the abnormal alarm of switch so as to compare the virtual condition of each switch and default correct status.The utility model can realize accurate, comprehensive judgement on off state in the busbar and feeder line of DC power system, and monitoring principle is simple, easy-to-connect, and very effective preventive means is provided for transforming plant DC power-supply system reliability of operation.
Description
Technical field
The utility model belongs to power supply technique field, and in particular to a kind of for monitoring dc bus and coupled
The system of the state respectively switched in each feeder line branch.
Background technology
Most of on off state monitoring device used in the prior art be by the signal of monitoring switch auxiliary contact come
Judged.The auxiliary contact of normal condition lower switch and the location status of main contact are consistent, i.e., are all closure or disconnection
State, therefore can be by auxiliary contact come the situation of reactive switches main contact.However in actual moving process, often
There is the situation of auxiliary contact failure, i.e. auxiliary contact can not follow the state change of main contact and change, and pass through acquisition at this time
The state of auxiliary contact just can not correctly reflect the actual position information of switch.Also, because the problem of field connection, although opening
The main contact of pass and the location information of auxiliary contact are correct, but due to the loosening of cable, the subordinate of switch, which can still exist, to be lost
The situation of electricity, thus it is simple by gathering switch auxiliary contact come whether judge the state of switch be correctly incomplete.
The content of the invention
The purpose of this utility model is to provide a kind of dc bus and coupled each of can accurately and comprehensively monitoring
The system of the state respectively switched in feeder line branch.
In order to achieve the above objectives, the technical solution adopted in the utility model is：
A kind of straight-flow system busbar and feeder line branch switch condition monitoring system, for monitoring dc bus and coupled
The state respectively switched in each feeder line branch connect, the straight-flow system busbar and feeder line branch switch condition monitoring system bag
It includes：
Several outgoing line sides respectively with each switch are connected, so as to be supervised in real time according to the voltage of the outgoing line side
Control the virtual condition of the switch and the on off state monitoring device of output state monitoring signal；
It is connected with each on off state monitoring device, so as to gather the corresponding condition monitoring letter of each switch
Number and upload switch acquisition device；
It is connected with the switch acquisition device, so as to compare the virtual condition of each switch and default correct shape
State judges whether each switch is abnormal and in the monitoring device of the abnormal alarm of the switch.
Preferably, the on off state monitoring device includes connecting the defeated of the positive-negative power of the outgoing line side of the switch
Enter wire connection terminal, two series connection after with the input wires terminal be connected to form the first circuit sectional pressure element, have it is normally opened
The relay of node, the output wiring terminal for exporting the condition monitoring signal, the coils from parallel connection of coils of the relay is in one
The both ends of a sectional pressure element, normally opened node and the output wiring terminal of the relay are connected to form second time
Road.
Preferably, the on off state monitoring device further includes the fuse being series in first circuit.
Preferably, the on off state monitoring device further includes the anti-reverse diode being series in first circuit.
Preferably, the on off state monitoring device further includes in parallel described point of coil for being parallel to the relay
Press the filter capacitor at element both ends.
Preferably, two sectional pressure elements are respectively divider resistance and voltage-stabiliser tube, the coils from parallel connection of coils of the relay in
The both ends of the voltage-stabiliser tube.
Preferably, the switch acquisition device includes being connected so as to receive with each on off state monitoring device
It states condition monitoring signal and exports the switch quantity acquisition circuit of the corresponding analog signal of the condition monitoring signal and the switch
Amount Acquisition Circuit be connected and the analog signal is converted to the CPU of the digital signal for the state that can indicate the switch,
It is connected with the CPU and transmits the serial communication module of the digital signal.
Preferably, the switch acquisition device, which further includes, is arranged between the switch quantity acquisition circuit and the CPU
It is switched with the multi-center selection of the analog signal of the different switches of selection.
Preferably, the switch quantity acquisition circuit includes photoelectrical coupler.
Since above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：The utility model
Accurate, comprehensive judgement can be realized on off state in the busbar and feeder line of DC power system, monitoring principle is simple,
Easy-to-connect provides very effective preventive means for transforming plant DC power-supply system reliability of operation.
Description of the drawings
Attached drawing 1 is the straight-flow system busbar of the utility model and the functional block diagram of feeder line branch switch condition monitoring system.
Attached drawing 2 is supervised on off state in the straight-flow system busbar of the utility model and feeder line branch switch condition monitoring system
Survey the schematic diagram of device.
Attached drawing 3 is switch acquisition in the straight-flow system busbar of the utility model and feeder line branch switch condition monitoring system
The schematic diagram of device.
Specific embodiment
Shown embodiment is further described the utility model below in conjunction with the accompanying drawings.
Embodiment one：As shown in Figure 1, it is a kind of to be used to monitor in dc bus and coupled each feeder line branch
The straight-flow system busbar of the state respectively switched and feeder line branch switch condition monitoring system are monitored including several on off states and filled
It puts, several switch acquisition devices and monitoring device.Each on off state monitoring device and a switch acquisition device
It is connected, and each switch acquisition device is connected with monitoring device, so as to complete networking.
Outgoing line side of each on off state monitoring device respectively with each switch is connected, so as to which on off state monitoring device is used for
The virtual condition of switch is monitored in real time according to the voltage of switch outgoing line side, and exports corresponding condition monitoring signal.Such as attached drawing 2
It is shown, on off state monitoring device include input wires terminal X1, two sectional pressure elements, have normally opened node relay K1 with
And output wiring terminal X2.Two sectional pressure elements are connected again with input wires terminal X1 after being in series and form the first circuit,
Two connection jaws of input wires terminal X1 are respectively used to the positive-negative power of the outgoing line side of connecting valve.In the present embodiment, two
A sectional pressure element is respectively divider resistance R1 and voltage-stabiliser tube DZ1.The coils from parallel connection of coils of relay K1 is in a sectional pressure element --- and it is steady
The both ends of pressure pipe DZ1, the normally opened node of relay K1 are then connected to form second servo loop, output connection with output wiring terminal X2
Two connection jaws of terminal X2 are used for connecting valve amount harvester, for output state monitoring signal.Further, should
On off state monitoring device further includes fuse Fuse, anti-reverse diode D1 and filter capacitor C1.Fuse Fuse and anti-
Reversal connection diode D1 is series in the first circuit, and filter capacitor C1 is then parallel to the coil partial pressure in parallel of relay K1
The both ends of element, i.e. voltage-stabiliser tube DZ1.
For the switch of required monitoring, no matter its occur how the problem of, final embodiments is that the outgoing line side of switch is electric
Pressure disappears, and normal working power can not be provided for load, especially controls load to protection, it will is brought extremely for substation
Serious loss.Therefore it is that the voltage for switching outgoing line side is supervised in real time to the monitoring most efficient method of on off state
It surveys, judges whether on off state is abnormal by switching the presence or absence of outgoing line side voltage.
The principle of above-mentioned on off state monitoring device is：Two connection jaws of input wires terminal X1 connect direct current system respectively
The positive-negative power of system busbar or feeder line branch switch outgoing line side, after positive power line accesses on off state monitoring device, line passes through
Fuse Fuse（Anti- locking apparatus short circuit causes the short circuit of straight-flow system busbar or feeder line）It is connected to anti-reverse diode D1, counnter attack
The effect for meeting diode D1 is to prevent wiring error from causing burning out for equipment internal electronic element, then again via divider resistance R1
Pressure divider circuit is formed with voltage-stabiliser tube DZ1 and returns to negative supply, and the voltage stabilizing parameter of voltage-stabiliser tube DZ1 is the normal work of relay K1
Voltage；Filter capacitor C1 is used for the stability for the voltage that DZ1 is maintained to export；Output wiring terminal X2 connection relays K1's is normally opened
Node, when busbar or feeder line branch have voltage in closure state, when dead electricity, is off.
Therefore, the state exported by off state monitoring device can accurately reactive switches state it is whether correct,
Busbar and feeder line branch are with the presence or absence of situation about powering off.
The corresponding condition monitoring of each switch that switch acquisition device is exported for acquisition by each on off state monitoring device
Signal, and condition monitoring signal is uploaded to monitoring device.As shown in Figure 3, switch acquisition device includes switch acquisition
Circuit, CPU and serial communication module.Switch quantity acquisition circuit is connected with each on off state monitoring device, so as to receive shape
State monitoring signal and the corresponding analog signal of output state monitoring signal.The switch quantity acquisition circuit includes monitoring on off state
Several photoelectrical couplers of the corresponding connection of device.CPU is connected with switch quantity acquisition circuit, for each simulation is believed
Number corresponding conversion is the digital signal for the state that can indicate switch.Serial communication module is then connected with CPU, for
Monitoring device transmits digital signal.Since each switch acquisition device is connected with multiple switch state monitoring apparatus, therefore switch
Amount harvester, which further includes, to be arranged between switch quantity acquisition circuit and CPU to select the multichannel of the analog signal of different switches
Selecting switch.Each switch shape for selecting to be sequentially completed the switch acquisition device and being connected switched by the multi-center selection
The signal of state monitoring device, and a collection period is formed, next collection period, which repeats, carries out above-mentioned gatherer process.
Since feeder line branch is more, it is necessary to unite to the output signal of all on off state monitoring devices in straight-flow system
One acquisition process is uploaded to monitoring device and is analyzed, therefore switch acquisition device is included in this programme.Switching value is adopted
Acquisition means can gather the switching-state information of 64 on off state monitoring device acquisitions simultaneously, and status information is converted to number
Word signal transmission is to monitoring device.
The condition monitoring signal that on off state monitoring device is exported is connected directly to the switching value of switch acquisition device
Acquisition Circuit interface, switch quantity acquisition circuit realization method are that the node signal exported by off state monitoring device controls photoelectricity
The working power of coupler.It is switching under closure state, the working power of photoelectrical coupler is connected, and exports corresponding voltage
Voltage signal is converted to digital signal 1/0,1 and represents that switch represents switch in closure state, 0 by signal transmission to CPU, CPU
It is off.When switch is off, photoelectrical coupler power supply access failure is unable to output voltage signal, CPU
Then think that the way switch is off.Switch acquisition device opens every road of acquisition after a collection period
The status signal of pass（1 or 0）Monitoring device is transferred to by serial communication module, by monitoring system to the status information of switch into
Row judges.
Apparatus such as computer may be employed in monitoring device, it is connected with switch acquisition device, so as to according to received
The signal by off state monitoring device and compare the virtual condition of each switch and default correct status, to judge each switch
It is whether abnormal, and in the abnormal alarm of switch, prompting repair and maintenance personnel's timely processing.
Monitoring system carries out unified condition adjudgement according to the position of the switch information being collected into, can be by setting busbar and branch
The normal status value of way switch, by the on off state value of acquisition compared with setting value, when there is difference in state value immediately
The position of the switch and title that alarm signal notifies that user is abnormal are provided, facilitates user that can quickly determine unusual switch position
It is timely replaced, prevents the generation of more major accident.
Generally, above-mentioned straight-flow system busbar and feeder line branch switch condition monitoring system are applied to transforming plant DC electricity
Source system is mainly used for monitoring the on off state of DC power system operational process median generatrix and each feeder line branch, on off state
The function that monitoring device is mainly realized is monitoring DC power system bus-tie circuit breaker and the location status of feeder switch, then by opening
Pass measures harvester and reading is concentrated to be uploaded to monitoring device the position of the switch information that on off state monitoring device gathers, by monitoring
Whether device analysis straight-flow system bus-tie circuit breaker and feeder switch are in normal operating position.
The technical program, which can realize the busbar and feeder switch state of DC power system, accurately to be judged, is supervised
It is simple to survey principle, easy-to-connect, and have systematic networking plan, realize transforming plant DC power-supply system busbar and all feedbacks
Comprehensive covering of line branch switch.This programme can be based on equipment busbar and feeder line branch switch is normally transported in DC power system
Conventional sense under line mode, busbar and feeder line for caused by the modes such as position of the switch exception, cable loosening, artificial maloperation
Branch dead electricity is accurately analyzed and determined that there is no any monitoring blind areas, efficiently solve existing monitoring technology state
The defects of monitoring is not comprehensive, the deficiency that deficiency state analyzes and determines, direct current system caused by preventing position of the switch exception or maloperation
System busbar or branch dead electricity, cause more serious substation's power outage, for the reliable of transforming plant DC power-supply system operation
Property very effective preventive means is provided.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, can not the scope of protection of the utility model be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (9)
1. a kind of straight-flow system busbar and feeder line branch switch condition monitoring system, for monitoring dc bus and coupled
Each feeder line branch in the state respectively switched, it is characterised in that：The straight-flow system busbar and feeder line branch switch state prison
Examining system includes：
Several outgoing line sides respectively with each switch are connected, so as to monitor institute in real time according to the voltage of the outgoing line side
State the virtual condition of switch and the on off state monitoring device of output state monitoring signal；
It is connected with each on off state monitoring device, so as to gather the corresponding condition monitoring signal of each switch simultaneously
The switch acquisition device of upload；
It is connected with the switch acquisition device, comes so as to compare the virtual condition of each switch with default correct status
Judge each switch whether extremely and in the monitoring device of the abnormal alarm of the switch.
2. straight-flow system busbar according to claim 1 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
Stating on off state monitoring device includes connecting the input wires terminal of the positive-negative power of the outgoing line side of the switch, two strings
The sectional pressure element in the first circuit is connected to form after connection with the input wires terminal, there is the relay of normally opened node, be used for
The output wiring terminal of the condition monitoring signal is exported, the coils from parallel connection of coils of the relay is in the two of a sectional pressure element
End, normally opened node and the output wiring terminal of the relay are connected to form second servo loop.
3. straight-flow system busbar according to claim 2 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
It states on off state monitoring device and further includes the fuse being series in first circuit.
4. straight-flow system busbar according to claim 2 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
It states on off state monitoring device and further includes the anti-reverse diode being series in first circuit.
5. straight-flow system busbar according to claim 2 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
State the filtering that on off state monitoring device further includes the coil sectional pressure element both ends in parallel for being parallel to the relay
Capacitance.
6. straight-flow system busbar according to claim 2 and feeder line branch switch condition monitoring system, it is characterised in that：Two
A sectional pressure element is respectively divider resistance and voltage-stabiliser tube, and the coils from parallel connection of coils of the relay is in the both ends of the voltage-stabiliser tube.
7. straight-flow system busbar according to claim 1 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
Stating switch acquisition device includes being connected to receive the condition monitoring signal simultaneously with each on off state monitoring device
It exports the switch quantity acquisition circuit of the corresponding analog signal of the condition monitoring signal, be connected with the switch quantity acquisition circuit
And the analog signal is converted to the CPU of the digital signal for the state that can indicate the switch, is connected simultaneously with the CPU
Transmit the serial communication module of the digital signal.
8. straight-flow system busbar according to claim 7 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
It states switch acquisition device and further includes and be arranged between the switch quantity acquisition circuit and the CPU with the different switches of selection
Analog signal multi-center selection switch.
9. straight-flow system busbar according to claim 7 and feeder line branch switch condition monitoring system, it is characterised in that：Institute
Stating switch quantity acquisition circuit includes photoelectrical coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721459778.4U CN207382059U (en) | 2017-11-06 | 2017-11-06 | Straight-flow system busbar and feeder line branch switch condition monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721459778.4U CN207382059U (en) | 2017-11-06 | 2017-11-06 | Straight-flow system busbar and feeder line branch switch condition monitoring system |
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| Publication Number | Publication Date |
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| CN207382059U true CN207382059U (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721459778.4U Active CN207382059U (en) | 2017-11-06 | 2017-11-06 | Straight-flow system busbar and feeder line branch switch condition monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601179A (en) * | 2018-05-30 | 2018-09-28 | 深圳市中科智联科技有限公司 | Loop control unit and loop control system |
| CN111932746A (en) * | 2020-08-14 | 2020-11-13 | 厦门熵基科技有限公司 | Access controller and access line state identification method |
| CN112821563A (en) * | 2021-02-04 | 2021-05-18 | 陕西北元化工集团股份有限公司 | System and method for monitoring whether power supply is abnormal |
| CN115148008A (en) * | 2022-06-30 | 2022-10-04 | 广东电网有限责任公司 | State monitoring and alarming device for direct current power supply loop |
-
2017
- 2017-11-06 CN CN201721459778.4U patent/CN207382059U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601179A (en) * | 2018-05-30 | 2018-09-28 | 深圳市中科智联科技有限公司 | Loop control unit and loop control system |
| CN111932746A (en) * | 2020-08-14 | 2020-11-13 | 厦门熵基科技有限公司 | Access controller and access line state identification method |
| CN112821563A (en) * | 2021-02-04 | 2021-05-18 | 陕西北元化工集团股份有限公司 | System and method for monitoring whether power supply is abnormal |
| CN115148008A (en) * | 2022-06-30 | 2022-10-04 | 广东电网有限责任公司 | State monitoring and alarming device for direct current power supply loop |
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