CN203416047U - Double bus closing monitoring and control integration apparatus - Google Patents
Double bus closing monitoring and control integration apparatus Download PDFInfo
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- CN203416047U CN203416047U CN201320398789.1U CN201320398789U CN203416047U CN 203416047 U CN203416047 U CN 203416047U CN 201320398789 U CN201320398789 U CN 201320398789U CN 203416047 U CN203416047 U CN 203416047U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 5
- 230000010354 integration Effects 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000009527 percussion Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model discloses a double bus closing monitoring and control integration apparatus. Under an effect of a GPS time comparison module, an acquisition module is used to collect a double bus secondary voltage signal; then the collected signal is transmitted to a first central processing unit through an analog-to-digital conversion module; a second central processing unit carries out logic calculation and the signal is emitted; a switch plug-in is used to control a bus coupler switch operation box. Under the condition that manpower resources and a potential safety hazard are reduced, a large impact current and impact power generated at a closing moment of the double bus are effectively avoided so that equipment is not damaged.
Description
Technical field
The utility model relates to intelligent substation technical field of automation, relates in particular to a kind of combined floodgate for transformer station's double-bus and monitors, controls integrated apparatus.
Background technology
When two inlet wires that are connected to respectively two sections of buses of a certain transformer station need nuclear phase, or two sections of buses of same transformer station are while needing nuclear phase, conventionally adopt to measure the PT secondary voltage of two sections of buses whether same-phase is carried out nuclear phase.For avoiding moment arranged side by side to produce larger impulse current and percussion power; operations staff need understand the voltage condition of two sections of buses arranged side by side; conventional means are exactly that protection personnel utilize universal instrument to carry out nuclear phase at voltage cabinet arranged side by side, after nuclear phase is errorless, just allow primary equipment paired running.
In this work, exist many problems: 1, personnel's waste: protection personnel must reach the spot, and this and the integrated general overhaul system of O&M obviously lag behind.2, electric power feeding time is long: need to handle work permit and termination formality.3, potential safety hazard is many: protection personnel need the on-the-spot terminal row wiring position of confirming secondary voltage line, even need to check drawing, and have field personnel to confirm measurement result, increase human factor.4, the limitation of measuring: only have the some of the staff at scene while measuring to see in short-term, and, can not measure the same phasic property of three-phase simultaneously.The voltage of background computer shows by public observing and controlling screen voltage is sent to backstage, and only can show the amplitude of voltage, phase place that can not comparative voltage.Synchronous device in jurisdiction transformer station of electric company is removed mostly, and synchronous device does not possess single-phase demonstration and uploads the function on backstage.
Utility model content
The purpose of this utility model is to provide the monitoring of a kind of double-bus combined floodgate, controls integrated apparatus, and the voltage status of Real-Time Monitoring double-bus, reduces manpower waste at a distance, and reduction potential safety hazard, increases work efficiency.
The technical solution adopted in the utility model is:
A kind of double-bus is closed a floodgate and is monitored, control integrated apparatus, comprise the interchange plug-in unit that connects an instrument transformer, the output that exchanges plug-in unit connects the input of sampling module, the output of sampling module connects the input of analog-to-digital conversion module, the output of analog-to-digital conversion module connects the first input end of the first CPU, the second input of the first CPU connect GPS to time module, the 3rd input of the first CPU connects remote control terminal, the output of the first CPU connects the input of the second CPU, the output connecting valve plug-in unit of the second CPU, switch plug-in unit is used for controlling bus connection switch control box.
The output of the second described CPU also connects the input of man-machine interface, and the output of man-machine interface connects distal displayed screen.
The utility model GPS to time module effect under, by acquisition module, gather double-bus secondary voltage signal, again the signal of collection is transferred to the first CPU by analog-to-digital conversion module, logical calculated through the second CPU, send signal, by switch plug-in unit, control bus connection switch control box; Reduce human resources, reducing under the state of potential safety hazard, effectively avoiding larger impulse current and the percussion power of double-bus combined floodgate moment generation, damaging equipment.
Accompanying drawing explanation
In Fig. 1 dotted line frame, it is schematic block circuit diagram of the present utility model;
Fig. 2 is theory diagram of the present utility model;
Fig. 3 is control principle schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises the interchange plug-in unit (being the little PT of secondary instrument transformer) that connects an instrument transformer PT, the output that exchanges plug-in unit connects the input of sampling module, the output of sampling module connects the input of analog-to-digital conversion module, the output of analog-to-digital conversion module connects the first input end of the first CPU, the second input of the first CPU connect GPS to time module, the 3rd input of the first CPU connects remote control terminal, the output of the first CPU connects the input of the second CPU, the output of the second CPU connects bus connection switch control box by switch plug-in unit, bus connection switch control box connects bus connection switch, the output of the second CPU is also connected with the input of man-machine interface, the output of man-machine interface connects distal displayed screen.
As shown in Figures 2 and 3, be connected to respectively two groups of PT(electronic type voltage transformers of two sections of buses), by bus with high voltage be converted to the low-voltage of 57.7V, I bus is UA1, UB1, UC1, II bus is UA2, UB2, UC2.By PT terminal box, through secondary cable, be incorporated into the WV of master-control room, then be incorporated into respectively each protective device by WV.When being incorporated into this device, through exchanging the conversion of the voltage of plug-in unit (little PT), be converted to the micro voltage (Ua1, Ub1, Uc1, Ua2, Ub2, Uc2) below 5V.GPS to time the system impulse action sent out under, carry out synchronized sampling, through analog-to-digital conversion module, the micro voltage of analog quantity is converted to digital signal amount, passing to the first CPU identifies and data processing again, and calculate and the comparison of numerical value, as: Ua1, Ub1, Uc1, Ua2, Ub2, the amplitude of Uc2, frequency F, amplitude difference DELTA Ua1-2 with Ua1-Ua2, the amplitude difference DELTA Ub1-2 of Ub1-Ub2, the amplitude difference DELTA Uc1-2 of Uc1-Uc2, and difference on the frequency Δ Fa1-2, Δ Fb1-2, Δ Fc1-2 and phase angle difference ΔΦ a1-2, ΔΦ b1-2, ΔΦ c1-2.Above voltage magnitude U, frequency F and Δ U, Δ F, ΔΦ, be transferred to distal displayed screen through communication plug, man-machine interface plug-in unit.
When Δ U, Δ F, ΔΦ meet the preset value of setting to the second CPU (meeting combined floodgate condition), the value of the second CPU logical calculated Δ U, Δ F, ΔΦ, as Δ U<10%U, ΔΦ <30 °, during Δ f≤0.5HZ, the second CPU output high level, otherwise, output low level; The second CPU is exported executive signal, and a pair of idle contact is provided, and connects the closing circuit of bus connection switch, meets double-bus combined floodgate condition; When Δ U, Δ F, ΔΦ, wherein any one can not meet Δ U<10%U, and ΔΦ <30 °, during Δ f≤0.5HZ, does not meet double-bus combined floodgate condition.When combined floodgate condition meets, while needing to close a floodgate, need operating personnel need manually boot remote control terminal simultaneously, now, close a floodgate; If do not need, do not close a floodgate, even if meet combined floodgate condition, do not start remote control terminal, can not close a floodgate yet.
The preset value of the second CPU can be set by device definite value.Conventionally by man-machine interface plug-in unit, inserted or distal displayed screen can be set.Δ U<10%U in literary composition, ΔΦ <30 °, Δ f≤0.5HZ are set according to the synchronization paralleling condition of state's net schedule regulation and Henan Province's schedule regulation regulation.
Claims (2)
1. a double-bus is closed a floodgate and is monitored, control integrated apparatus, it is characterized in that: comprise the interchange plug-in unit that connects an instrument transformer, the output that exchanges plug-in unit connects the input of sampling module, the output of sampling module connects the input of analog-to-digital conversion module, the output of analog-to-digital conversion module connects the first input end of the first CPU, the second input of the first CPU connect GPS to time module, the 3rd input of the first CPU connects remote control terminal, the output of the first CPU connects the input of the second CPU, the output connecting valve plug-in unit of the second CPU, switch plug-in unit is used for controlling bus connection switch control box.
2. double-bus combined floodgate according to claim 1 monitoring, control integrated apparatus, is characterized in that: the output of the second described CPU also connects the input of man-machine interface, the output of man-machine interface connects distal displayed screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320398789.1U CN203416047U (en) | 2013-07-05 | 2013-07-05 | Double bus closing monitoring and control integration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320398789.1U CN203416047U (en) | 2013-07-05 | 2013-07-05 | Double bus closing monitoring and control integration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203416047U true CN203416047U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320398789.1U Expired - Fee Related CN203416047U (en) | 2013-07-05 | 2013-07-05 | Double bus closing monitoring and control integration apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203416047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062513A (en) * | 2014-05-20 | 2014-09-24 | 东南大学 | Secondary phase detecting instrument and method |
-
2013
- 2013-07-05 CN CN201320398789.1U patent/CN203416047U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062513A (en) * | 2014-05-20 | 2014-09-24 | 东南大学 | Secondary phase detecting instrument and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20190705 |