CN2666005Y - Device for protecting, observing and controlling electric load equipment - Google Patents
Device for protecting, observing and controlling electric load equipment Download PDFInfo
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- CN2666005Y CN2666005Y CN 03252691 CN03252691U CN2666005Y CN 2666005 Y CN2666005 Y CN 2666005Y CN 03252691 CN03252691 CN 03252691 CN 03252691 U CN03252691 U CN 03252691U CN 2666005 Y CN2666005 Y CN 2666005Y
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Abstract
The utility model relates to generator technical field, comprising an enclosure, modules, a single chip microprocessor, a controller, a displayer, key-presses, a relay, terminals and a power supply. A terminal A is electrically connected with a signal processing module and the rear end of the signal processing module is electrically connected with an AD sampling module, a data processor, a data exchanger and an SCM system which is electrically connected with a telecommunication buss controller, an LCD displayer, the key-presses, a hard disk, a protective control software module, a relay outlet control module and an optical couple isolation module; the telecommunication buss controller is electrically connected with a CAN buss transceiver which is electrically connected with a terminal B; the relay outlet control module is electrically connected with a relay array through an optical couple isolation module while the relay array is electrically connected with a terminal D; the SCM system is electrically connected with a terminal E through an opening-inserting couple isolation module; a terminal C which is connected with the power is electrically connected with another optical couple isolation module.
Description
Technical field
The utility model relates to the generating set technical field, particularly the protection of the electrical load equipment running status of generating set station service electrical system, monitoring, control technology and industrial field bus mechanics of communication.
Background technology
The major function of the comprehensive protector of conventional electrical load equipment; be that the electrical load equipment running status is monitored; when anomaly takes place in the running current of this kind equipment, voltage etc.; protective device is judged rapidly; the discrimination type that is out of order, and make respectively: send out the alarm prompt signal, send out the trip operation order of disengagement failure load power by fault category.
The characteristics of this comprehensive protector are that a protective device is monitored the part signal of a load equipment, only finish defencive function.
In the actual motion; the starting of electrical load equipment (start-up function and starting conditions are judged); stop (shut-down operation and stop reason are judged); running status (the interlock of each relevant load equipment; interlock logic is provided with); service data (comprises every phase current; voltage; active power; reactive power; power factor; accumulative total electric degree value); defencive function etc.; all need to rely on the circuit breaker on the switch cubicle with coordinative composition of equipments; all kinds of secondary meters; various relays; rely on a large amount of secondary singal cables to be connected on-the-spot switch cubicle and master control room with control cable, finish the function of overall control.
Be to adapt to the needs of real work, the development of comprehensive protector is the combination from a plurality of electromagnetic relays, to discrete electronic component, integrated circuit, up-to-dately is made of microcomputer.Before the comprehensive protector that is made of microcomputer, owing to be subjected to the restriction of circuit structure, comprehensive protector can't undertake the whole thing functions such as the protection of electrical load equipment, control, measurement.But after the comprehensive protector that is made of microcomputer occurred, it possesses powerful software operational capability, added advanced electromechanical integration technology, made comprehensive protector only finish defencive function and had just seemed the wasting of resources.
The utility model content
The purpose of this utility model is for overcoming the waste of prior art and physical resources; strengthen the transfer of data real-time of electric control system and control quick, reliability; improve automatization level, a kind of protection measure and control device that is used for thermal power generation unit station service electrical system that integrates protection, measurement, control, communication function is provided.
For achieving the above object, technical solution of the present utility model provides a kind of protection measure and control device of electrical load equipment, by casing, and signal processing module, Single Chip Microcomputer (SCM) system, the communication bus controller, LCD, button, hard disk, relay array, the light-coupled isolation module, port and power supply are formed; One port A is electrically connected with signal processing module, and the signal processing module rear end is electrically connected with in regular turn: A/D AC sampling module, 32 bit data processors, 16 bit data interchanger and bit single-chip systems; 16 bit single-chip systems respectively with the communication bus controller, LCD, button, hard disk, protection Control Software module, relay control of export module and light-coupled isolation module are electrically connected; The communication bus controller is electrically connected with the CAN bus transceiver, and bus transceiver is electrically connected with another port B; Relay control of export module is electrically connected with relay array by the light-coupled isolation module; Relay array is electrically connected with a port D again; Single Chip Microcomputer (SCM) system is electrically connected with another port E by opening into the optocoupler isolation module; Another light-coupled isolation module is electrically connected with port C; Also be connected to power supply on the port C, power supply places in the casing.
Described device has the closing circuit detection module in its described relay array, trip(ping) circuit detection module and anti-trip relay; Closing circuit detection module and trip(ping) circuit detection module are connected on the port D; Anti-trip relay places between closing circuit detection module and the trip(ping) circuit detection module, and is electrically connected with closing circuit detection module and trip(ping) circuit detection module respectively.
Described device, its port A are connected to current/voltage and detect, protect the loop; Port B is a communication interface; Port C is connected to the electric degree pulse counter; Port D is connected to the switching value output circuit, and the switching value output circuit comprises combined floodgate and trip(ping) circuit, signal circuit; Port E is connected to the switching value input circuit.
The utility model has the advantages that:
1, defencive function is complete, and the reliability height is adjusted easy to maintenance.Eliminated a large amount of electromagnetic relays, technology content promotes greatly.
2, measurement, function of measuring are complete, can save big scale meter, cable.Reduce a large amount of maintenance workloads (as regularly to the gage work of all kinds of table meters, the maintenance of cable etc.).Lower personal expenditures and Master Cost.
3, controlled function reliability height, precise control, quick, control logic is easy to adjust, can save a large amount of control cable, signal cable, and project cost descends at least 1/4.Reduce a large amount of maintenance works to cable.
4, data processing function improves greatly, for improving the system management level, improving system stable operation, provides the very effective firsthand data.
The utility model protection measure and control device can be to 35KV and following transmission line, large capacity motor, transformer, and electrical load equipment such as capacitor compensation cabinet are protected, measure, controlled.Can be used for the protection observing and controlling of the electric comprehensive automation of protection observing and controlling and transformer station of the station service electrical system in power plant.
After using the utility model device, make that the electrical monitoring system structure is more reasonable, performance, technology content improve greatly.Project cost significantly reduces.
Description of drawings
Fig. 1 is the structure chart of the protection measure and control device of the utility model electrical load equipment.
Embodiment
Protection measure and control device of the present utility model is a primary mental ability headend equipment that constitutes in the electric complex automatic system of layered distribution type, has protection, measurement, control, communication function.The protection measure and control device can directly disperse to be installed on each switch cubicle, also can concentrate group screen to install.Protection, measurement, the controlled function of device are relatively independent; information such as all kinds of measurement data, control command, signal; upload by the field bus communication network that is connected with device; simultaneously; setting, the modification of control command, status poll and various protection set points assigned in reception, realizes four remote control function.
The defencive function of protection measure and control device is identical with comprehensive protector.
The measurement function of protection measure and control device can be finished collection, calculating, the demonstration of the service data (comprising every phase current, voltage, active power, reactive power, power factor, accumulative total electric degree value) of load equipment, and uploads by communication network.So just can save various secondary table meters, transmitter in the former configuration.Alleviate the load of electric current, voltage transformer, reduced difficulty of construction and line service amount, saved a large amount of manpower and materials.
The controlled function of protection measure and control device; by installing inner Electromechanical Design; with the circuit breaker close fit, finish equally electrical load equipment starting (start-up function and starting conditions judge), stop (shut-down operation and stop reason are judged), running status (interlock of each relevant load equipment, interlock logic setting).Save a large amount of traditional electromagnetic relays, and can reduce the volume of switch cubicle.
The protection measure and control device significantly reduces the consumption of secondary cable owing to use field bus communication network (twisted-pair feeder or optical fiber constitute) to substitute conventional secondary singal cable and control cable, has saved substantial contribution.The advanced person's of device employing simultaneously CANBUS field bus control system is formed communication network, can guarantee real-time, the reliability of Various types of data transmission.
As shown in Figure 1; the protection measure and control device 100 of the utility model transmission line is by casing 1, signal processing module 7, Single Chip Microcomputer (SCM) system 11; communication bus controller 12; LCD 14, button 15, hard disk 16; relay array 19; light-coupled isolation module 20,21, port 2,3,4,5,6, and power supply 22 is formed.On the side panel of casing 1, be provided with port 2,3,4,5 and 6.Port 2 is electrically connected with signal processing module 7, and signal processing module 7 rear ends are electrically connected with in regular turn: A/D AC sampling module 8,32 bit data processors, 9,16 bit data interchangers 10 and 16 bit single-chip systems 11; 16 bit single-chip systems 11 respectively with communication bus controller 12, LCD 14, button 15, hard disk 16, protection Control Software module 17, relay control of export module 18 and light-coupled isolation module 20,21 are electrically connected.Communication bus controller 12 is electrically connected with CAN bus transceiver 13, and bus transceiver 13 is electrically connected with port 3.Relay control of export module 18 is electrically connected with relay array 19 by light-coupled isolation module 20; Relay array 19 is electrically connected with port 5; Closing circuit detection module 191 is arranged, trip(ping) circuit detection module 192 and anti-trip relay 193 in the relay array 19; Closing circuit detection module 191 and trip(ping) circuit detection module 192 are connected on the port 5, anti-trip relay 193 places between closing circuit detection module 191 and the trip(ping) circuit detection module 192, and is electrically connected with closing circuit detection module 191 and trip(ping) circuit detection module 192 respectively.Single Chip Microcomputer (SCM) system 11 is electrically connected with port 6 by opening into optocoupler isolation module 201.Light-coupled isolation module 21 is electrically connected with port 4; Also be connected to power supply 22 on the port 4, power supply 22 places in the casing 1.
The current/voltage that port 2 is connected to conveying circuit detects, the protection loop; Port 3 is a communication interface; Port 4 is connected to the electric degree pulse counter; Port 5 is connected to the switching value output circuit, and the switching value output circuit comprises combined floodgate and trip(ping) circuit, signal circuit; Port 6 is connected to the switching value input circuit.
A/D AC sampling module 8 is made of analog switch, 14 A/D converters, power module etc.Effect is with 12 road analog AC signals, converts digital signal to, and guarantees the amplitude of AC signal and the less distortion of phase relation.
The effect of 32 bit data processors (DSP) 9 is that the digital signal that conversion is good is carried out the Fu Shi computing, draws the required every data of device, and these data just can reflect the electrical load equipment running status.
Exchanges data is to be finished by 16 twoport data exchange units 10, for the quick and real-time that guarantees data processing is provided with, is the data exchange channel of data processor 9 and Single Chip Microcomputer (SCM) system 11.
Single Chip Microcomputer (SCM) system 11 includes 16 single-chip microcomputers, 16 bit memories/EingangsAusgangsSchnittstelle (PSD), clock circuit, hardware watchdog circuit etc., bears the master control function of device 100.Effect has:
1) data that will get from data exchange unit 10 are called the computing that protection Control Software module 17 is protected the aspect, draw control protection action message, by relay control of export module 18, finish concrete operations.
2) will measure from the data that data exchange unit 10 gets, the computing of metering aspect, result of calculation shows by LCD 14.
3) from open optocoupler isolation module 201, call in the status signal of external switch amount, call protection Control Software module 17, draw logic control information, by relay control of export module 17, finish concrete operations.
4) instructions for use that gets the auto levelizer user from liquid crystal display device module and button is accepted every data, and with running status, is shown to the user, finishes man-machine communication's function.
5) by voltage monitor, hardware watchdog, reset system and call protection Control Software module certainly, the finishing device faults itself detects and judges, improves the device operational reliability.
6) by with the getting in touch of communication bus controller 12 modules, above-mentioned 1 ~ 5 content by CAN bus transceiver 13 and local communication network, is uploaded to the upper strata supervisory control system, and also accepts the control command of upper strata supervisory control system, by relay control of export module 18, finish concrete operations.
The utility model device has protection, measurement, control, 4 major functions of communication, introduces workflow separately below respectively.
1. protection: device 100 is from the protective current loop (7 ~ 12 terminals of port 2); in the voltage circuit (13 ~ 20 terminals of port 2); gather the running current of load equipment; working voltage; by signal processing module 7; AC sampling module 8; data processor 9; data exchange unit 10; after the Single Chip Microcomputer (SCM) system 11; obtain one group can the characterization device running status digital data; with these group data and pre-set one group of protection set point subitem comparison; exceed set point; by relay control of export module 18; drive the actuating of relay; protection tripping operation or audible alarm are sent out in the output of the realization amount of leaving.
Preliminary setting data is by button 15 operational modules, is set by the user.
Each protection item is for each the protection item in the protection software module 17, as fast tripping protection, specified time overcurrent protection, positive sequence protection, negative phase-sequence protection etc.
2. measure: device 100 is from protective current loop (1 ~ 6 terminal of port 2), voltage circuit (13 ~ 20 terminals of port 2); gather running current, the working voltage of load equipment; after signal processing module 7, AC sampling module 8, data processor 9, data exchange unit 10, Single Chip Microcomputer (SCM) system 11; obtain one group can characterization device consumed power situation digital data, comprise every electric current, voltage, active power, reactive power, power factor, kilowatt-hour meter etc.Show by LCD 14.
3. control: device 100 obtains the state position signal of one group of equipment by opening into optocoupler isolation module 201, by this group position signalling, after device carries out logical operation, can judge whether to trip, closes a floodgate, send out operations such as alarm signal.And during concrete operations, device relies on " be incorporated into, close out, jump into, jump out, " of the amount of leaving output and the controlled function that inner anti-jump relay 193, closing circuit detection module 191, the trip(ping) circuit detection module 192 of device realized on-load switch.
4. communication: device 100 is by communication bus controller 12; data upload during with above-mentioned 1 ~ 2 protection and measurement data and protection tripping operation or audible alarm; above-mentioned 3 state position signal is uploaded; for master control system provides the operation judges foundation; also accept simultaneously the instruction assigned, and carry out control command on-load switch.
Claims (3)
1, a kind of protection measure and control device of electrical load equipment, by casing, signal processing module, Single Chip Microcomputer (SCM) system, the communication bus controller, LCD, button, relay array, the light-coupled isolation module, port and power supply are formed; It is characterized in that a port A is electrically connected with signal processing module, the signal processing module rear end is electrically connected with in regular turn: A/D AC sampling module, data processor, data exchange unit and Single Chip Microcomputer (SCM) system; Single Chip Microcomputer (SCM) system respectively with the communication bus controller, LCD, button, hard disk, protection Control Software module, relay control of export module and light-coupled isolation module are electrically connected; The communication bus controller is electrically connected with the CAN bus transceiver, and bus transceiver is electrically connected with another port B; Relay control of export module is electrically connected with relay array by the light-coupled isolation module; Relay array is electrically connected with a port D again; Single Chip Microcomputer (SCM) system is electrically connected with another port E by opening into the optocoupler isolation module; Another light-coupled isolation module is electrically connected with port C; Also be connected to power supply on the port C, power supply places in the casing.
2, device as claimed in claim 1 is characterized in that, the closing circuit detection module is arranged in the described relay array, trip(ping) circuit detection module and anti-trip relay; Closing circuit detection module and trip(ping) circuit detection module are connected on the port D; Anti-trip relay places between closing circuit detection module and the trip(ping) circuit detection module, and is electrically connected with closing circuit detection module and trip(ping) circuit detection module respectively.
3, device as claimed in claim 1 is characterized in that, port A is connected to current/voltage and detects, protects the loop; Port B is a communication interface; Port C is connected to the electric degree pulse counter; Port D is connected to the switching value output circuit, and the switching value output circuit comprises combined floodgate and trip(ping) circuit, signal circuit; Port E is connected to the switching value input circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252691 CN2666005Y (en) | 2003-09-29 | 2003-09-29 | Device for protecting, observing and controlling electric load equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252691 CN2666005Y (en) | 2003-09-29 | 2003-09-29 | Device for protecting, observing and controlling electric load equipment |
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| Publication Number | Publication Date |
|---|---|
| CN2666005Y true CN2666005Y (en) | 2004-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03252691 Expired - Lifetime CN2666005Y (en) | 2003-09-29 | 2003-09-29 | Device for protecting, observing and controlling electric load equipment |
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| Country | Link |
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| CN (1) | CN2666005Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852844A (en) * | 2009-04-03 | 2010-10-06 | 华北电力科学研究院有限责任公司 | Data calibration device of AC sampling and measuring device and method thereof |
| CN102505997A (en) * | 2011-11-07 | 2012-06-20 | 天津市电视技术研究所 | Data parameter display control system for generator set |
| CN103607041A (en) * | 2013-05-02 | 2014-02-26 | 国家电网公司 | Grid line protecting and monitoring device |
| CN104142648A (en) * | 2014-08-21 | 2014-11-12 | 中铁第一勘察设计院集团有限公司 | Management and control terminal of urban rail traffic low-voltage power distribution system |
| CN105655979A (en) * | 2016-03-15 | 2016-06-08 | 厦门大学嘉庚学院 | Device capable of distinguishing overcurrent and overload protection action signals of high-voltage motor and method |
| CN111983294A (en) * | 2020-08-06 | 2020-11-24 | 江苏航空职业技术学院 | Aircraft electric power stability detector and detecting system thereof |
-
2003
- 2003-09-29 CN CN 03252691 patent/CN2666005Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852844A (en) * | 2009-04-03 | 2010-10-06 | 华北电力科学研究院有限责任公司 | Data calibration device of AC sampling and measuring device and method thereof |
| CN102505997A (en) * | 2011-11-07 | 2012-06-20 | 天津市电视技术研究所 | Data parameter display control system for generator set |
| CN102505997B (en) * | 2011-11-07 | 2014-01-15 | 天津市电视技术研究所 | Data parameter display control system for generator set |
| CN103607041A (en) * | 2013-05-02 | 2014-02-26 | 国家电网公司 | Grid line protecting and monitoring device |
| CN104142648A (en) * | 2014-08-21 | 2014-11-12 | 中铁第一勘察设计院集团有限公司 | Management and control terminal of urban rail traffic low-voltage power distribution system |
| CN104142648B (en) * | 2014-08-21 | 2017-07-04 | 中铁第一勘察设计院集团有限公司 | Urban track traffic low-voltage distribution system control terminal |
| CN105655979A (en) * | 2016-03-15 | 2016-06-08 | 厦门大学嘉庚学院 | Device capable of distinguishing overcurrent and overload protection action signals of high-voltage motor and method |
| CN105655979B (en) * | 2016-03-15 | 2018-02-06 | 厦门大学嘉庚学院 | The device and method of high-voltage motor overcurrent and overload protection action signal can be differentiated |
| CN111983294A (en) * | 2020-08-06 | 2020-11-24 | 江苏航空职业技术学院 | Aircraft electric power stability detector and detecting system thereof |
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Effective date of registration: 20080421 Pledge (preservation): Pledge |
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Date of cancellation: 20090525 Pledge (preservation): Pledge registration |
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Date of cancellation: 20100628 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2009340000558 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for protecting, observing and controlling electric load equipment Effective date of registration: 20100628 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2010990000795 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for protecting, observing and controlling electric load equipment Effective date of registration: 20101210 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2010990001001 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20101110 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2010990000795 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20120214 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2010990001001 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for protecting, observing and controlling electric load equipment Effective date of registration: 20120214 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2012990000051 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20101110 Granted publication date: 20041222 Pledgee: Anhui credit guarantee Group Co., Ltd. Pledgor: Xu Liang|Hefei can Electric Co., Ltd. Registration number: 2010990000795 |
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