CN106549368B - A kind of method for protecting software of intelligence IED controls switchgear - Google Patents

A kind of method for protecting software of intelligence IED controls switchgear Download PDF

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Publication number
CN106549368B
CN106549368B CN201611248454.6A CN201611248454A CN106549368B CN 106549368 B CN106549368 B CN 106549368B CN 201611248454 A CN201611248454 A CN 201611248454A CN 106549368 B CN106549368 B CN 106549368B
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current
unit
breaker
mcu
protecting software
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CN201611248454.6A
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CN106549368A (en
Inventor
袁红珍
孙文艺
于冬初
雷健华
陈立
岳丕榜
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Guangdong Mingyang Electric Co.,Ltd.
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ZHONGSHAN MINGYANG ELECTRIC Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/0061Details of emergency protective circuit arrangements concerning transmission of signals

Abstract

The invention discloses a kind of method for protecting software of intelligence IED control switchgears; including MCU, man-machine interface, control execution unit, display unit, communication unit and the conversion circuit being integrated on same device housings; collecting unit is connect by the way that acquisition signal can be converted to the conversion circuit of MCU identifications with MCU; the MCU is also electrically connected with man-machine interface, communication unit respectively, which is electrically connected respectively with the control execution unit, display unit.The present invention has perfect comprehensive protection function, the problems such as meeting disparity items operation demand, switch cabinet state is monitored on-line, is controlled, is protected and communication is integrated in one, avoids signal repeated acquisition and numerous and diverse wiring.

Description

A kind of method for protecting software of intelligence IED controls switchgear
Technical field
The present invention relates to intelligent electronic devices(IED), particularly relate to a kind of software protection side of intelligence IED controls switchgear Method.
Background technology
Existing switch cabinet instrument room generally has complex protection device+digital displaying meter+Intelligent control device+wireless temperature measuring device+temperature Humidity controller+three-phase electrification display+electric chassis truck control module+electronic earthing knife-switch control module, more than equipment respectively independence, Quantity is various, caused by the result is that:1st, switch cabinet instrument room volume is big so that switchgear can not realize miniaturization;2nd, secondary line Cable is more, and wiring heavy workload, trouble point are more;3rd, hardware configuration repeat, each equipment all need configuration power module, communication module, CPU, shell, display screen, cause hardware cost to waste;4th, signal repeated acquisition is handled, switching signal, telemetering amount lamp repeated acquisition Processing;5th, communication interface diversification, each producer's communications protocol are not exclusively compatible;6th, equipment interoperability is poor, devices from different manufacturers Operating method, interface are inconsistent, make troubles for on-site maintenance.
Based on problem above, there is an urgent need for a kind of scheme, all appellative functions can be covered and by each device height It is integrated, and this integrate cannot be the formula superposition that simply plays with building blocks, but to remove duplicate components, realize function fusion.
Invention content
In order to solve the above technical problems, the software protection the object of the present invention is to provide a kind of intelligence IED control switchgears Method.
The technical solution adopted in the present invention is:
A kind of method for protecting software of intelligence IED controls switchgear, intelligent IED include being integrated on same device housings MCU, man-machine interface, control execution unit, display unit, communication unit and conversion circuit, collecting unit is by that can will acquire The conversion circuit that signal is converted to MCU identifications is connect with MCU, which is also electrically connected with man-machine interface, communication unit respectively, The man-machine interface is electrically connected respectively with the control execution unit, display unit;The method for protecting software includes vacuum circuit breaker Device monitoring pattern:Collecting unit during being triggered by defencive function(1)The effective accumulated value of drop-out current acquired is abscissa, divides Closing operation cycle-index is ordinate, in man-machine interface(3)Upper setting breaker rated current, specified mechanical life divide-shut brake Number is as first inflection point, and breaker nominal short-circuit tolerance electric current, rated short circuit current open and close times are as second inflection point; MCU(2)Carry out logic judgment:Show that circuit breaker electrical endurance is normal when the working value of breaker is in interval range, work as action Show contact of breaker serious wear when value is outside section edge or section, by display unit(5)Or communication unit(6)It reminds Service personnel overhauls in time.
The method for protecting software further includes switchgear arc protection pattern:Intelligent IED accesses several by arc light sensor The current value that the optical signal and electronic current mutual inductor that device transmits come, when the arc light or current increment that detect certain strength When send out trip signal, according to the difference of protection equipment, operating criterion is set as:Arc light and current component:It is detected when simultaneously Trip signal is just sent out during to arc light and overcurrent.Arc light component:Trip signal is sent out when the arc light for detecting some strength.Cross flow component:Trip signal is sent out when detecting overcurrent.
Further, the collecting unit includes temperature sensor(Wireless or optical fiber), Temperature Humidity Sensor, electrification sensing Device, Boolean value output sensor, energy storage current transformer, divide-shut brake loop current mutual inductor, electronic earthing knife-switch current of electric mutual inductor, electricity Dynamic chassis vehicle current of electric mutual inductor, electronic current mutual inductor, electronic type voltage transformer and arc photosensor.
Further, it is single to match different types of acquisition to include analog-digital converter and Hall sensor for the conversion circuit Member.
Further, the control execution unit includes electronic earthing knife-switch control unit, electric chassis truck control unit, breaker Control unit, Temperature and Humidity Control unit.
Further, the display unit for the primary connection circuit figure of display switch cabinet, three-phase charged data, electrical quantity, Temperature data, SOE and remote recording data, warning information.
Further, the communication unit includes RS485 interfaces, CAN interface, network interface and WiFi module.
Beneficial effects of the present invention:
(1)Not only there is perfect comprehensive protection function, meet disparity items operation demand;Also there is arc protection work( Can, failure is quickly cut off, reduces arc light harm.
(2)It is highly integrated.Switch cabinet state is monitored on-line, is controlled, is protected and communication is integrated in one, avoids signal weight The problems such as second mining collection and numerous and diverse wiring.
(3)Conventional electromagnetic mutual inductor is replaced using electronic mutual inductor, compensates for that electromagnetic transformer volume is big, magnetic is satisfied And the shortcomings of, analog quantity can be not only inputted, digital quantity input also may be selected.
(4)Main IED hardware designs use isolated from power, and shell uses metal material, existed by effective measures lifting means High current, high voltage strong electromagnetic interference environment under antijamming capability.
(5)Real time on-line monitoring.All data are uploaded to distal end in real time by communicating, it can be real-time on PC/ mobile phones It checks data, and distant place regulation and control can be carried out according to data results;It is real to breaker, electric chassis truck, electric ground switch A now flexible distant place/control on the spot, really realizes unattended, and intensity and maintenance cost are safeguarded in reduction.
(6)Modularized design, each function module can be matched according to user.
(7)Multiple kinds are optional, meet IEC61850(MMS and Goose)Standard.
Description of the drawings
The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the functional block diagram of intelligent electronic device of the present invention.
Specific embodiment
As shown in fig.1, switchgear is controlled for a kind of intelligence IED that the present invention is based on, including being integrated in same equipment MCU2, man-machine interface 3, control execution unit 4, display unit 5, communication unit 6 and conversion circuit 7 on shell, acquisition are single Member 1 by can by acquire signal be converted to MCU2 identification conversion circuit 7 connect with MCU2, the MCU2 also respectively with man-machine interface 3rd, communication unit 6 is electrically connected, which is electrically connected respectively with the control execution unit 4, display unit 5.
Wherein, the collecting unit 1 includes temperature sensor(Wireless or optical fiber), Temperature Humidity Sensor, electrification sensing Device, Boolean value output sensor, energy storage current transformer, divide-shut brake loop current mutual inductor, electronic earthing knife-switch current of electric mutual inductor, electricity Dynamic chassis vehicle current of electric mutual inductor, electronic current mutual inductor, electronic type voltage transformer and arc photosensor, acquisition temperature The temperature-humidity signal of humidity sensor, the temperature signal of temperature sensor, the switch of band power information, breaker, handcart, earthing knife-switch etc. The data such as amount, electric current, voltage, divide-shut brake circuit, energy storage motor, electronic earthing knife-switch, electric chassis truck current of electric, and be sent to Micro-control unit MUC 2.
In order to match the different sensors of above-mentioned collecting unit, the conversion circuit 7 includes analog-digital converter and Hall passes Sensor to match different types of collecting unit 1, wherein, divide-shut brake loop current mutual inductor, electronic earthing knife-switch current of electric mutual inductance Device, electric chassis truck current of electric mutual inductor are converted using Hall sensor, other are converted using analog-digital converter.
Data are integrated, are analyzed by micro-control unit MCU2, handle after, carry out data interaction with man-machine interface 3.Micro-control Unit MCU 2 processed by data processing by telemetering, remote signalling amount real-time display in man-machine interface 3, and receive in man-machine interface 3 Operational order so as to be acted accordingly.Wherein, the control execution unit 4 includes electronic earthing knife-switch control unit, electronic bottom Jiggering control unit, circuit breaker control unit, Temperature and Humidity Control unit, electronic earthing knife-switch control unit, electric chassis truck control are single Member corresponds respectively to specific motor driver, and circuit breaker control unit corresponds to the divide-shut brake coil of breaker, disconnected to control The divide-shut brake of road device, Temperature and Humidity Control unit is then using heater and wind turbine come the humiture of regulating switch cabinet.
One vital point of the technical program is that vacuum circuit breaker service life is the synthesis of mechanical life and electric life, Its mechanical life is conceived to the ability in terms of mechanical action, and mechanical life is long, up to 10,000 time or more.Electric life is true The electrical connecting-disconnecting function of empty breaker is usually represented with the open and close times of rated short circuit drop-out current.Due to powerful electric arc Ablation to contact, the electric life number of vacuum circuit breaker only tens of times.In general, the electric life of vacuum circuit breaker determines it True service life.If electric life is more than, vacuum interrupter can fail, and electric arc cannot disconnect, and arc-chutes may explode, and cause Major accident.So the monitoring and assessment to its electric life are very important.
Therefore, the main inventive point of the technical program is:Utilize the effective accumulated value of drop-out current when being triggered by defencive function The foundation monitored with breaking-closing operating cycle-index curve as circuit breaker electrical endurance, drop-out current during being triggered by defencive function Effective accumulated value is abscissa, circuit-breaker switching on-off operation circulation number is ordinate, breaker rated current, specified machinery Service life divide-shut brake number is as first inflection point, breaker nominal short-circuit tolerance electric current, rated short circuit current open and close times conduct Second inflection point.The breaker above-mentioned parameter value of each producer's different model may be all different, need breaker producer by multiple It is provided after repetition test, above-mentioned parameter can all be adjusted in intelligent IED.Show when the working value of breaker is in interval range Circuit breaker electrical endurance is normal, shows contact of breaker serious wear when working value is outside section edge or section, reminds inspection Personnel are repaiied to overhaul in time.
Main IED passes through 6 points of 433MHz wireless signals or collecting fiber contact of breaker, busbar lap-joint 3 points, electricity The temperature sensor data of cable junction 3, can real-time display each point temperature value and temperature curve by intelligent IED.User can Each point temperature alarming limit value is set by main IED, intelligent IED cluster analyses, fuzzy Judgment provide switch contacts temperature pre-warning letter Breath, and alert data is recorded, effectively early warning temperature it can rise fire accident.
In electronic earthing knife-switch, electric chassis truck control aspect:Consider from the security standpoint of operator, realize a distant place and on the spot two The complete electric operating of handcart disengaging and earthing switch division under kind pattern, while original manual function is remained, it breaks through Traditional switchgear can only be completed earthing switch division on the spot by manpower and be operated and the bottleneck of handcart disengaging operation.
Under with regard to ground mode, user passes through intelligent IED, you can makes electric chassis truck between operating position and testing position It completes disengaging operation or completes earthing knife-switch breaking-closing operating, while according to the setting of user, the event to occurring in real time in motion process Barrier is timely handled(Stop or return in situ).
In the distance under pattern, user directly can carry out Electronic control by being remotely controlled rival car or earthing knife-switch.Due to chassis Vehicle, the specification of earthing knife-switch and model are not quite similar, in order to ensure the convenience of the versatility of product and manual and electric switching, in master The setting page of IED provides the setting to motor operating parameter, can be adjusted correspondingly according to different situations.
The technical program also has perfect comprehensive protection function, suitable for circuit, transformer, motor, capacitor, mother The different applications occasions such as connection, PT cabinets.The 15 sets of protection independently adjusted customizations are provided, to be applicable in the various different operating conditions in scene.
It is improved in addition, the technical program also has on arc protection:In switch cabinet busbar room, cable vault's installation arc light sensor Device, for the electric arc optical signal in detection switch cabinet.Working sensor range:- 40 ~+70 DEG C, fiber lengths can customize, peace Dress is simple firm.
Intelligent IED can access the optical signal that several are transmitted by arc photosensor and current transformer Lai current value, Trip signal is sent out when the arc light or current increment for detecting certain strength(Jump into line or feeder line), according to protecting equipment not Together, operating criterion may be set to:Arc light and current component;Trip signal is just sent out when being detected simultaneously by arc light and overcurrent.Arc light component;Trip signal is sent out when the arc light for detecting some strength.Cross flow component;It sends out when detecting overcurrent Trip signal.These three relay protective schemes can be realized in intelligent IED simultaneously.
In terms of display, intelligent IED uses LCD full-color touch screens, not only can dynamically synchronously simulating display switch Primary connection figure and various switch motion states can also show the much information of various analog quantitys, switching value and digital quantity;It is special It is not the information that various switches and breaker mechanical position can be visually shown with the method for simulative display, difference can also be used Color distinguish, simulative display goes out under switch motion electrification, not charged or ground connection state.
In terms of communication, the communication unit 6 includes RS485 interfaces, CAN interface, network interface and built-in WiFi module, branch Hold Modbus RTU, Modbus Plus, IEC61850(MMS and Goose), IEC60870-5-103 104 grade communication protocols, Support state's net/south network data encryption function.It by mobile phone or can safeguard that notebook is networked with built-in Wi-Fi modules, not stop Electricity, do not open cabinet door in the case of realize wireless setting parameter, operation data check, straighforward operation, digital independent, reduce operation Maintenance cost.As the intelligent IED applied to substation's wall, using Novel Communication network and system protocol IEC61850 as base Plinth so that smart machine has good autgmentability, adapts to the needs of electric substation automation system future development.
The foregoing is merely the present invention preferred embodiments, the present invention is not limited to the above embodiment, if with Essentially identical means realize that the technical solution of the object of the invention is belonged within protection scope of the present invention.

Claims (7)

1. a kind of method for protecting software of intelligence IED controls switchgear, intelligent IED include being integrated on same device housings MCU (2), man-machine interface (3), control execution unit (4), display unit (5), communication unit (6) and conversion circuit (7), are adopted Collection unit (1) is connect by the way that acquisition signal can be converted to the conversion circuit (7) of MCU (2) identifications with MCU (2), and the MCU (2) is also Respectively with man-machine interface (3), communication unit (6) be electrically connected, the man-machine interface (3) respectively with the control execution unit (4), Display unit (5) is electrically connected;It is characterized in that:The method for protecting software includes vacuum circuit breaker monitoring pattern:With by protecting The effective accumulated value of drop-out current that collecting unit (1) is acquired when function triggers is abscissa, circuit-breaker switching on-off operation circulation Number is ordinate, and breaker rated current, specified mechanical life divide-shut brake number are set in man-machine interface (3) as first A inflection point, breaker nominal short-circuit tolerance electric current, rated short circuit current open and close times are as second inflection point;MCU (2) is patrolled It collects and judges:Show that circuit breaker electrical endurance is normal when the working value of breaker is in interval range, when working value is at section edge Or show contact of breaker serious wear when outside section, remind service personnel timely by display unit (5) or communication unit (6) Maintenance.
2. a kind of method for protecting software of intelligence IED controls switchgear according to claim 1, it is characterised in that:Also wrap Include switchgear arc protection pattern:Intelligent IED accesses several optical signals and current transformer for being transmitted by arc photosensor Come current value, send out trip signal when the arc light or current increment for detecting certain strength, according to protection equipment difference, Operating criterion is set as:1. arc light and current component:Trip signal is just sent out when being detected simultaneously by arc light and overcurrent;2. arc light Component:Trip signal is sent out when the arc light for detecting certain strength;3. cross flow component:Tripping letter is sent out when detecting overcurrent Number.
3. a kind of method for protecting software of intelligence IED controls switchgear according to claim 1, it is characterised in that:It is described Collecting unit (1) includes temperature sensor, Temperature Humidity Sensor, electrified sensor, Boolean value output sensor, energy storage Current Mutual Inductance Device, divide-shut brake loop current mutual inductor, electronic earthing knife-switch current of electric mutual inductor, electric chassis truck current of electric mutual inductor, electronics Formula current transformer, electronic type voltage transformer and arc photosensor.
4. a kind of method for protecting software of intelligence IED controls switchgear according to claim 3, it is characterised in that:It is described Conversion circuit (7) is including analog-digital converter and Hall sensor to match different types of collecting unit (1).
5. a kind of method for protecting software of intelligence IED controls switchgear according to claim 1, it is characterised in that:It is described Control execution unit (4) includes electronic earthing knife-switch control unit, electric chassis truck control unit, circuit breaker control unit, humiture Control unit.
6. a kind of method for protecting software of intelligence IED controls switchgear according to claim 1, it is characterised in that:It is described Display unit (5) for the primary connection circuit figure of display switch cabinet, three-phase charged data, electrical quantity, temperature data, SOE with it is distant Control record data, warning information.
7. a kind of method for protecting software of intelligence IED controls switchgear according to claim 1, it is characterised in that:It is described Communication unit (6) includes RS485 interfaces, CAN interface, network interface and WiFi module.
CN201611248454.6A 2016-12-29 2016-12-29 A kind of method for protecting software of intelligence IED controls switchgear Active CN106549368B (en)

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CN107394745A (en) * 2017-07-01 2017-11-24 合肥东玖电气有限公司 A kind of aobvious control protection device of on off state
CN109103859B (en) * 2018-10-24 2020-02-07 云南电网有限责任公司电力科学研究院 Distribution network differential protection measurement and control device supporting 4G communication
CN110008937B (en) * 2019-04-22 2021-09-03 西安图玛智能科技有限公司 Switch cabinet running state management monitoring system and method and computing equipment

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US20070182255A1 (en) * 2004-04-01 2007-08-09 Schneiderheinze Martin D K Safety switching module
CN201892729U (en) * 2010-11-01 2011-07-06 广西中电新源电气有限公司 Electric service life monitoring device of HGIS (hybrid gas insulated switchgear) circuit breaker
CN205050781U (en) * 2015-09-02 2016-02-24 中山市明阳电器有限公司 Intelligent middling pressure circuit breaker
CN205303984U (en) * 2015-12-04 2016-06-08 盐城新技源电力设备有限公司 Intelligence control system's high tension switchgear

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Effective date of registration: 20201228

Address after: No.1, Hengmen Xingye West Road, Nanlang Town, Zhongshan City, Guangdong Province, 528400

Patentee after: Guangdong Mingyang Electric Co.,Ltd.

Address before: 528437 No. 25 Jiangling West Road, Torch Development Zone, Zhongshan, Guangdong

Patentee before: ZHONGSHAN MINGYANG ELECTRIC Co.,Ltd.