CN103178505B - Short-circuit prevention control method, device and module for high-voltage perimeter precaution power grid - Google Patents
Short-circuit prevention control method, device and module for high-voltage perimeter precaution power grid Download PDFInfo
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- CN103178505B CN103178505B CN201310049364.4A CN201310049364A CN103178505B CN 103178505 B CN103178505 B CN 103178505B CN 201310049364 A CN201310049364 A CN 201310049364A CN 103178505 B CN103178505 B CN 103178505B
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Abstract
The invention discloses a short-circuit prevention control method for the high-voltage perimeter precaution power grid. The short-circuit prevention control method is characterized in that a short-circuit prevention control device is serially connected to a high-voltage output loop of the high-voltage perimeter precaution power grid, detects load current of various high-voltage wires to switch and judge, and controls correspondingly. When load current of one of the high-voltage wires is out of limit, high-voltage output of the high-voltage wire is cut off. When load current of all the high-voltage wires is out of limit, high-voltage output of the high-voltage wires is cut of at intervals in turns, and one channel of high-voltage output is always kept. The invention further provides short-circuit prevention control device and module for the high-voltage perimeter precaution power grid. By the aid of the short-circuit prevention control method, device and module, impact effectiveness of the high-voltage power grid can be maintained to the greater extent, and burning down of transformers of high-voltage compartments due to long-time short circuit can be avoided.
Description
Technical field
The present invention relates to high-voltage fence against short-circuit control technology, particularly relate to boundary defence high-voltage fence against short-circuit control method, boundary defence high-voltage fence against short-circuit control device and the against short-circuit control module for this device.
Background technology
The emphasis of prison institute, all kinds of important place safety precaution is boundary defence facility, and what boundary defence facility uniquely had strike effect and deterrent force is exactly periphery high voltage fence equipment, and it is the last line of defense in prison.If high-voltage fence equipment can not realize round-the-clock effective strike, accident early warning, its consequence is then hardly imaginable.High-voltage fence is generally fixed on the top of a wall or ground with different angles, high-voltage line quantity is the distribution of 20 centimetres, 4-12 line interval, every 100-150 rice is that a section is equipped with a high pressure generator (abbreviation high-voltaghe compartment), the high voltage pulse that this equipment is exportable 3 kilovolts ~ 10 kilovolts is online to high-voltage line, someone can produce electrion to human body when touching high pressure gauze, make it lose ability to act, thus stop illegally crossing the border of lawless person.
By analysis; current prison run use boundary defence high-voltage fence equipment adopt general high-tension transformer pressure build-up technique; there is no short-circuit protection transformer and intelligent high-pressure output switching function; suppose when there being people illegally to cross the border; be placed in High-Voltage Network with iron wire or other conductor; the short circuit of high voltage network voltage can be made to lose electric shock ability, and long-time short circuit also can make the transformer of high-voltaghe compartment burn.Prison has occurred a lot ofly to be shorted the event that rear convict successfully escapes from prison because of circumference electrical network in recent years, is therefore badly in need of high-voltage fence against short-circuit control technology and comes out.
Summary of the invention
In view of this, the invention provides a kind of boundary defence high pressure against short-circuit control program, can when there is short circuit in high-voltage line network, judge by analysis, realize dynamic high-voltage line output switching, maintain the usefulness that high voltage network hits to a greater extent, stop illegally crossing of convict further, and long-time short circuit can also be avoided to cause the transformer of high-voltaghe compartment to burn.
In order to solve the problems of the technologies described above, the present invention is achieved in that
A kind of boundary defence high-voltage fence against short-circuit control method, the High voltage output loop of boundary defence high-voltage fence is connected in series against short-circuit control device; Against short-circuit control device detects the load current size of each bar high-voltage line and carries out switching judging and control: when the load current of certain high-voltage line transfinites, and cuts off the High voltage output of this high-voltage line; When the load current of all high-voltage lines all transfinites, be interrupted the High voltage output disconnecting each high-voltage line in turn, remained a road High voltage output.
Wherein, the decision procedure that the load current of high-voltage line transfinites is: the electric current that high-voltage line flows through against short-circuit control device is greater than setting threshold and the retention time is greater than setting duration, then judge that the load current of high-voltage line transfinites.
Preferably, against short-circuit control device is made up of at least 2 against short-circuit control modules, and an against short-circuit control module is connected in a controlled high-voltage circuit; Each against short-circuit control module obtains the load current size of self place high-voltage line; Each against short-circuit control module is every setting communication time T
1by the mutual its data of wireless communication mode, and carry out switching judging and control according to interaction data; Described setting communication time T
1span be: 5 ~ 60 seconds.
Preferably, described against short-circuit control device comprises two against short-circuit control modules, is designated as module X and module Y; High-voltaghe compartment A, B two high-voltage lines to high voltage network output high-tension electricity are connected in series an against short-circuit control module respectively; One of them against short-circuit control module is master control side, and another against short-circuit control module is a point prosecutor; Divide the data of prosecutor every setting communication time T
1be uploaded to master control side, high-voltage line switching judging is determined by master control side.
Module X and module Y carries out against short-circuit according to load current and controls to be divided into following three kinds of situations to process;
Situation is one of A, B two high-voltage lines shorted to earth 1.:
When only having a side phenomenon that load current transfinites to be detected in module X and module Y, then control to detect that a side of this phenomenon disconnects the High voltage output of self place high-voltage line;
Situation is short circuit between A, B two high-voltage lines 2.:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side exits the state of transfiniting, and now keeps the on off operating mode of current two-way high-voltage line constant;
All there is short circuit in situation 3. A road, B road, the earth:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side still transfinites, and now switches the on off operating mode of current two-way high-voltage line; And proceed data interaction, when next communication time arrives again, whether the load current not disconnecting a side exits the state of transfiniting, if so, then 2. process according to situation, otherwise, again switch the on off operating mode of current two-way high-voltage line, so circulate.
The method also comprise dispatch from the factory before clock synchronous is carried out to each against short-circuit control module, specifically comprise: each against short-circuit control module is placed in the communication range of calibration instrument respectively, calibration instrument tranmitting data register signal; After against short-circuit control module receives described clock signal, self clock is aimed at clock signal, and oneself state is demarcated as factory mode; Under factory mode, against short-circuit control module is all in holding state, and only reservation clock and current sense function normally work;
After the installation of against short-circuit control module, with high pressure tools touching also short circuit high-voltage line, now each against short-circuit control module all detects that the load current of place high-voltage line transfinites, and present mode is factory mode, then oneself state is revised as mode of operation, and starts the normal work of each composition hardware in against short-circuit control module.
In the operational mode, when there is anomalous communication situation, against short-circuit control module carries out the synchronous of clock to against short-circuit control module voluntarily, is specially:
Against short-circuit control module cannot receive other against short-circuit control module data then start query pattern at the communication time of agreement, under this query pattern, master control side every one interval time t
asend a synchronizing information to each point of prosecutor, synchronizing information sending duration is α, each t interval time sending synchronizing information
ashorten successively; Each point of prosecutor every one interval time t
breceive a synchronizing information, it is also α that the reception of synchronizing information is held time; t
bwith t
ainitial value identical, t
bremain unchanged.
Present invention also offers a kind of boundary defence high-voltage fence against short-circuit control device, this device comprises two against short-circuit control modules, is designated as module X and module Y, is connected on high-voltaghe compartment respectively and exports to high voltage network on A, B two high-voltage lines of high-tension electricity; Each against short-circuit control module obtains the load current size of self place high-voltage line, and each against short-circuit control module is every setting communication time T
1by the mutual its data of wireless communication mode, and carry out switching judging and control according to interaction data; One of them against short-circuit control module is master control side, and another against short-circuit control module is a point prosecutor; Divide the data of prosecutor every setting communication time T
1be uploaded to master control side, high-voltage line switching judging is determined by master control side:
Situation is one of A, B two high-voltage lines shorted to earth 1.:
When only having a side phenomenon that load current transfinites to be detected in module X and module Y, then control to detect that a side of this phenomenon disconnects the High voltage output of self place high-voltage line;
Situation is short circuit between A, B two high-voltage lines 2.:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side exits the state of transfiniting, and now keeps the on off operating mode of current two-way high-voltage line constant;
All there is short circuit in situation 3. A road, B road, the earth:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side still transfinites, and now switches the on off operating mode of current two-way high-voltage line; And proceed data interaction, when next communication time arrives again, whether the load current not disconnecting a side exits the state of transfiniting, if so, then 2. process according to situation, otherwise, again switch the on off operating mode of current two-way high-voltage line, so circulate.
Present invention also offers a kind of against short-circuit control module for above-mentioned boundary defence high-voltage fence against short-circuit control device, this against short-circuit control module is arranged on controlled high-tension line, it comprises: High-Voltage Insulation outer cover, and is arranged on mechanical switching devices and the control circuit of High-Voltage Insulation outer cover inside; Described control circuit comprises current detection circuit, Cortex-M3 governor circuit, radio frequency communication circuit, inversion step-up circuit, high pressure switch driving circuit and electric power management circuit; Cortex-M3 governor circuit is connected with other each control circuit assemblies; Mechanical switching devices is connected with Cortex-M3 governor circuit with high pressure switch driving circuit;
Mechanical switching devices, is connected in high-voltage line, for the cut-out that realizes high-voltage line be communicated with, and return the current handoff state of high-voltage line to Cortex-M3 governor circuit;
Current detection circuit, for the load current adopting contactless current transformer to detect high-voltage line, sends to Cortex-M3 governor circuit after signal transacting;
Radio frequency communication circuit, for realizing the exchanges data with other against short-circuit control modules in against short-circuit control device;
Cortex-M3 governor circuit, disconnecting and the control be communicated with for judgement, the high-voltage line realizing load current, when judging only have the load current of self place high-voltage line to transfinite according to exchanges data result, cutting off the High voltage output of place high-voltage line; When judging that the load current of all high-voltage lines all transfinites according to exchanges data result, mutually to cooperate the High voltage output being interrupted and disconnecting each high-voltage line in turn with other against short-circuit control modules, having remained a road High voltage output; Cortex-M3 governor circuit is also responsible for the telecommunication management of radio frequency communication circuit;
Inversion step-up circuit, the electric energy for realizing being provided by electric power management circuit is converted to high drive electric energy;
High pressure switch driving circuit utilizes the action drives of described high drive electric energy realization to mechanical switching devices;
Electric power management circuit adopts battery as power supply, and the electric energy for realizing against short-circuit control module provides and manages.
Preferably, described mechanical switching devices is made up of high pressure tongue tube, permanent magnet, freeze mode electromagnet and position detecting device; Controlled high-voltage line is accessed at the two ends of high pressure tongue tube; Permanent magnet is fixed on the expansion link of freeze mode electromagnet, position detecting device is positioned at the top of expansion link, when the expansion link of freeze mode electromagnet stretch out put in place time, permanent magnet is positioned at the position that high pressure reed switch contact can be made to disconnect, when the expansion link retraction of freeze mode electromagnet puts in place, permanent magnet is positioned at the position that high pressure reed switch contact can be made to connect.
Beneficial effect:
(1) the present invention is by detecting load current, when the load current of not all high-voltage line transfinites, disconnects the High voltage output of the high-voltage line that transfinites, and allows GPS survey line ball keep hitting.Once all high-voltage lines all transfinite; damage is caused for avoiding the long-time short circuit of high-tension apparatus; adopt and be interrupted the mode of each high-voltage line of disconnecting in turn, thus realize boundary take precautions against high-voltage fence short-circuit between conductors or respectively shorted to earth time still have and hit usefulness and proterctive equipment does not damage.
(2) against short-circuit control device is made up of multiple module, each module in charge one road high-voltage line, and each module is by wireless communication mode interaction data, when individual modules goes wrong, can replace separately, as long as again demarcate clock can continue to use, reduce the cost of whole device.And the potential safety hazard such as wireless communication mode high pressure leakage that wire communication mode can be avoided to bring, and easy for installation, do not need entity communication line.
(3) multiple comprising modules of against short-circuit control device adopt host-guest architecture, can reduce the control error judging respectively to bring, control the problems such as inharmonious, and reduce the cooperation difficulty of each module.
(4) employing two against short-circuit control modules are arranged on the scheme on the outlet line of high-voltaghe compartment, and this is the more excellent embodiment adopting minimal hardware to realize the object of the invention, go for the high voltage network to odd number or even number arrangement.And give A road/independent shorted to earth in B road, short circuit between A road and B road, all there is the processing mode of short circuit in A road and B road, the earth, can not only distinguish short-circuit state, and can effectively and process targetedly.
(5) clock synchronization mode that provides of the present invention, can shorten lock in time.
(6) The present invention gives a kind of mechanical switch circuit, its maintenance high pressure is switched on or switched off and does not need continued power, greatly saves electric energy, can be adapted to the high voltage control of circumference high voltage pulse electrical network system.And against short-circuit control module communicated in the designated time, also can power consumption be reduced, thus for adopting battery to provide the foundation as power supply.
Accompanying drawing explanation
Fig. 1 is against short-circuit control program schematic diagram of the present invention.
Fig. 2 is the against short-circuit control program that the present invention adopts two modules realizations.
Fig. 3 is against short-circuit control module composition schematic diagram.
Fig. 4 (a) is schematic diagram when mechanical switch control circui high-voltage line disconnects.
Fig. 4 (b) is schematic diagram when mechanical switch control circui high-voltage line is communicated with.
Embodiment
The invention provides a kind of boundary defence high-voltage fence against short-circuit control program, its basic thought is: on the High voltage output loop of boundary defence high-voltage fence, be connected in series against short-circuit control device; Against short-circuit control device detects the load current size of each bar high-voltage line and carries out switching judging and control: when the load current of certain high-voltage line transfinites, and cuts off the High voltage output of this high-voltage line; When the load current of all high-voltage lines all transfinites, be interrupted the High voltage output disconnecting each high-voltage line in turn, remained a road High voltage output.
Visible, the present invention, by detecting load current, when the load current of not all high-voltage line transfinites, disconnects the High voltage output of the high-voltage line that transfinites, and allows GPS survey line ball keep hitting.Once all high-voltage lines all transfinite, for avoiding the long-time short circuit of high-tension apparatus to cause damage, adopting and being interrupted the mode of each high-voltage line of disconnecting in turn, thus realize boundary and take precautions against high-voltage fence and still have when short circuit and hit usefulness and proterctive equipment does not damage.
In practice, likely occur that branch or other object short time touch the situation of electrical network by mistake, in order to avoid switching by mistake, the decision procedure that the load current of high-voltage line transfinites is: the electric current that high-voltage line flows through against short-circuit control device is greater than setting threshold and the retention time is greater than setting duration, then judge that the load current of high-voltage line transfinites.Here setting duration can adopt the strike cycle of high-voltage fence impact pulse to be unit.
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
As shown in Figure 1, against short-circuit control device can be made up of two or more against short-circuit control module, an against short-circuit control module is connected in a controlled high-voltage circuit, and each against short-circuit control module obtains the load current size of self place high-voltage line; Each against short-circuit control module is every setting communication time T
1by the mutual its data of wireless communication mode, and carry out switching judging and control according to interaction data.The mode of this each module in charge one road high-voltage line, when individual modules goes wrong, can replace separately, can continue to use, reduce the cost of whole device as long as again demarcate clock.Communication interval T
1can select from 5 ~ 60 seconds, goodly be chosen as 30 ~ 60 seconds, master control side and point prosecutor carry out communicate in the designated time and can reduce the energy resource consumption of against short-circuit control module, thus provide the foundation as power supply for employing battery.
Preferably, one of them against short-circuit control module is master control side, and other against short-circuit control modules are a point prosecutor; Divide the data of prosecutor every one section of setting-up time T
1be uploaded to master control side, high-voltage line switching judging is determined by master control side, and a point prosecutor only needs submit onself to someone's direction.This host-guest architecture can reduce the control error judging respectively to bring, and controls the problems such as inharmonious, and reduces the cooperation difficulty of each module.
The rack of high-voltage fence circuit is generally upright or be parallel on the top of a wall and install, and high-voltage line is divided into 5 lines, 6 lines or other line number to distribute, can environmentally or the requirement of prison side realize different physics warning height.But in general high-voltaghe compartment only provides two high-voltage line A and B to high voltage network, as shown in Figure 2, high voltage network side adopt back and forth around mode realize the distribution of 5 lines, 6 lines or other line number.Therefore, against short-circuit control device can be designed to be made up of two against short-circuit control modules, be designated as module X and module Y, be serially connected in high-voltaghe compartment respectively and export on A, B two-way high-voltage line of high-tension electricity to high voltage network.If employing host-guest architecture, then set module X as master control side, module Y is a point prosecutor, and data are submitted to module X by module Y, and high-voltage line switching judging is determined by module X.This scheme against short-circuit control module being arranged on the lead-out terminal place of high-voltaghe compartment is the more excellent embodiment adopting minimal hardware to realize the object of the invention, and goes for the high voltage network to odd number or even number arrangement.
For the scheme adopting module X and module Y, high-voltage fence circuit is abnormal following 3 kinds of possibilities:
1. there is short circuit with the earth separately in A road, or B road occurs short circuit with the earth separately;
2. short circuit between A road High voltage output and B road High voltage output;
3. all there is short circuit in A road, B road, the earth;
1. plant situation for the, when A road occurs short circuit with the earth separately, only have A road electric current to increase, B road electric current is normal.When there is separately short circuit with the earth in B road in like manner.
2. plant situation for the, between A road High voltage output and B road High voltage output during short circuit, A, B two-way electric current all has increase, and after disconnecting one group of high pressure, another group high-tension electricity fails to be convened for lack of a quorum and obviously reduces.
3. plant situation for the, when short circuit all appears in A road, B road, the earth, A, B two-way electric current all has increase, and this phenomenon and situation are 2. identical, but when making one group of high-tension current not have obvious reduction after disconnection one group of high pressure, 2. this and situation are different.
Based on above-mentioned 3 kinds of situation analysis, module X and module Y processes according to a load current point situation;
When only having a side phenomenon that load current transfinites to be detected in module X and module Y, judge a wherein road high-voltage line shorted to earth (situation 1.), then control to detect that a side of this phenomenon disconnects the High voltage output of self place high-voltage line.This operation can unshorting fault keep still having high pressure between grid line and over the ground, keeps hitting usefulness.
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current:
When next communication time arrives, if the load current not disconnecting a side exits the state of transfiniting, judge short circuit (situation 2.) between two-way high-voltage line, then keep the on off operating mode of current two-way high-voltage line constant.This operation can unshorting fault keep electrical network to still have high pressure over the ground, keeps hitting usefulness.In practice, regularly can also inquire about the high-voltage line electric current being confirmed as short circuit, if recover normal, then can be connected.
When next communication time arrives, if the load current not disconnecting a side still transfinites, judge two-way high-voltage line and ground all short circuits (situation 3.), now switch the on off operating mode of current two-way high-voltage line.Then proceed data interaction, when another communication time arrives, whether the load current not disconnecting a side exits and transfinites, and if so, then 2. processes according to situation, otherwise, again switch the on off operating mode of current two-way high-voltage line, so circulate.If so two-way high-voltage line shorted to earth state does not change, alternately switch the circuit exporting high pressure always, once because artificial reparation or other reasons make wherein high-voltage line exit short circuit, then can automatically be transformed into situation 2., even situation 1., achieves and automatically detect and restore funcitons.Although this situation processing mode 3. is not fixed a breakdown, utilize the control mode alternately exported, high-voltaghe compartment equipment short circuit thermal problem can be avoided to the full extent, extend the useful life of boundary defence high-voltage fence.
Various state does not affect the various warning functions of former boundary defence high-voltage web system above.
In the present invention, each module carries out communicating in the time of agreement, and the synchronism therefore communicated is very important, and as there is anomalous communication situation, each module can not the output of cutoff high because of communication failure easily, but carry out clock synchronous to recover communication.
In order to realize precise synchronization, each module of the present invention all adopts high-precision crystal oscillator stabilization, in setting-up time, and the clock synchronization algorithm realized by beacon frame, under frequency drift or radio frequency severe jamming environment, can the reliably working of assurance device.Clock synchronous is divided in dispatch from the factory preamble and work synchronous.
▲ dispatch from the factory before clock synchronous:
Before pointing out factory, clock demarcation is carried out to the against short-circuit control module as a group.Concrete employing can the instrument C of transmit clock signal coordinate, X, Y module of having debugged is placed in the communication range of instrument C respectively, module X, Y can with instrument C communication, tranmitting data register signal is carried out by instrument C, module X and module Y is when receiving the clock signal that instrument C sends, open the clock of self immediately and carry out clock signal with instrument C and aim at, and oneself state is demarcated as factory mode.Under factory mode, X, Y module is in holding state, and except clock circuit and current detecting, all peripheral hardwares quit work, and power consumption stream is less than 1 μ A, thus saves electric energy.
Factory mode is pattern when not coming into operation such as bin storage, after module is installed to scene, available high pressure tools triggers between the line of short circuit High-Voltage Network A road and B road composition, at this moment X, Y module detects that the load current of place high-voltage line transfinites simultaneously, and present mode is factory mode, then oneself state is revised as mode of operation, and starts wireless telecommunications and other peripheral circuit of intermodule.
Self-recoverage clock synchronous in ▲ work:
Clock step-out may be there is due to the reason such as external interference, software reset during normal work, thus cannot proper communication within the designated time, therefore need to carry out clock synchronous.Module X or Y does not receive the data of the other side within the designated time, and waiting for a period of time when delay also cannot proper communication, then determine clock step-out, enable query pattern simultaneously, under this query pattern, module X every one interval time t
asend a synchronizing information to each module Y, synchronizing information sending duration is α, each t interval time sending synchronizing information
ashorten successively; Module B every one interval time t
breceive a synchronizing information, it is also α that the reception of synchronizing information is held time; t
bwith t
ainitial value identical, but t
bremain unchanged.Shorten gradually because module X sends the interval of synchronizing information, therefore one realize synchronous with module Y surely within the limited time, shorten lock in time.
Wherein, interval time t
acan shorten by unique step, its Changing Pattern is: t
a=T-(n-1) × △, T is the basic interval time and t that set
b=T, n are the subsynchronous information of transmission n-th, and △ is t
ashortening step-length, n gets and can make t
afor the positive integer of positive number.
Such as, t
ainitial value be 1 second, shorten step-length △ be 0.1 second, α is 0.1 second, then module X sends 0.1 second duration at every turn, and send be spaced apart 1 second, 0.9 second, 0.8 second ... 0.1 second, module Y received 0.1 second time every 1 second, in success synchronous after 10 seconds.
In such scheme, each against short-circuit control module can adopt same hardware structure, if adopt host-guest architecture, and the just all difference of software of master control side and point prosecutor.Against short-circuit control module comprises High-Voltage Insulation outer cover, and is arranged on mechanical switching devices and the control circuit of High-Voltage Insulation outer cover inside.Fig. 3 is control circuit partial schematic diagram, and as shown in Figure 3, control circuit comprises current detection circuit, Cortex-M3 governor circuit, radio frequency communication circuit, inversion step-up circuit, high pressure switch driving circuit and electric power management circuit.Cortex-M3 governor circuit is connected with other each control circuit assemblies; Mechanical switching devices is connected with high pressure switch driving circuit.
Mechanical switching devices for the cut-out that realizes high-voltage line be communicated with, and namely to cut off and connected state to the switching state that Cortex-M3 governor circuit returns high-voltage line.
Current detection circuit is for realizing the detection of the load current of high-voltage line, comprise contactless current transformer and signal processing circuit, this contactless current transformer detects the load current of high-voltage line, sends to Cortex-M3 governor circuit after signal transacting.
Cortex-M3 governor circuit for realizing the judgement of load current, high-voltage line disconnects and the control be communicated with.And the telecommunication management of radio frequency communication circuit;
Inversion step-up circuit is converted to high drive electric energy for the electric energy realizing being provided by electric power management circuit;
High pressure switch driving circuit utilizes the action drives of described high drive electric energy realization to mechanical switching devices;
Electric power management circuit adopts battery as power supply, and the electric energy for realizing against short-circuit control module provides and manages.
Below above-mentioned each comprising modules is described in detail.
(1) mechanical switching devices
Mechanical switching devices plays electronic switching, and it can adopt high-voltage relay to realize, but high-voltage relay maintains connection needs continued power, can consume a large amount of electric energy like this.
The invention provides a kind of mechanical switch circuit of economize on electricity, as shown in Figure 4, it is made up of high pressure tongue tube, permanent magnet, freeze mode electromagnet and position detecting device; There is inert gas high pressure tongue tube inside, there will not be phenomenon of arc discharge in a high voltage state, and input and output insulativity is high, can close the small area analysis high-pressure passage of broken height to ten thousand volt completely, play on-off action.The two ends of high pressure tongue tube connect the High voltage output of boundary defence high-voltaghe compartment and the input of controlled high-voltage line respectively.Permanent magnet and freeze mode electromagnet form the parts that perform an action, freeze mode electromagnet inside has two groups of coils, be respectively used to after energising control stretching out and bouncing back of expansion link, permanent magnet is fixed on the expansion link of freeze mode electromagnet, position detecting device is positioned at the top of expansion link, when the expansion link of freeze mode electromagnet stretch out put in place time, permanent magnet is positioned at the position that high pressure reed switch contact can be made to disconnect, as shown in Fig. 4 (a), when the expansion link retraction of freeze mode electromagnet puts in place, permanent magnet is positioned at the position that high pressure reed switch contact can be made to connect, as shown in Fig. 4 (b).Position detecting device is used for returning permanent magnet physical location to Cortex-M3 governor circuit, and Cortex-M3 governor circuit this permanent magnet physical location can be determined whether it moves and put in place, and knows the switching state of high-voltage line.Insulator in figure is used for fixing high pressure tongue tube and freeze mode electromagnet, and provides slideway for the stable motion of permanent magnet.
After the forward coil electricity of freeze mode electromagnet, expansion link drives permanent magnet to move near high pressure reed switch contact, and still maintains the state of stretching out after a loss of power, thus realizes the lasting disconnection of high pressure tongue tube; In like manner, after the reverse winding energising of freeze mode electromagnet, expansion link drives permanent magnet to leave high pressure reed switch contact, and still maintains retracted state after a loss of power, thus realizes the lasting connection of high pressure tongue tube.About 0.1 second switching time of freeze mode electromagnet, from inversion to the fastest frequency switched be 5 seconds each.
Visible, this mechanical switch circuit maintenance high pressure is switched on or switched off and does not all need continued power, alternative high-voltage relay, can be adapted to the high voltage control of circumference high voltage pulse electrical network system.
(2) Cortex-M3 governor circuit
The EFM32 chip that Cortex-M3 master control uses current Performance Ratio high, has the advantages such as reliability is high, processing speed fast, power consumption is extremely low.This management of software ic all peripheral modules and is worked in order, and inside is integrated with discharge circuit and PWM drive source circuit, improves circuit consistency and compatibility.EFM32 chip adopts the high-precision crystal oscillating circuit of 32.768KHz for synchronously providing time reference signal.Radio frequency communication circuit and other module carrying out shake communication is controlled once, exchange local data every 30 ~ 60 seconds.After carrying out the switching of High voltage output circuit, communication can once determine the end value of switching after five seconds.
(3) current detection circuit
Current detecting part uses non-contact type current instrument transformer, the current signal be coupled to is delivered to after amplitude limit and filtering the inside discharge circuit of EFM32 chip, this amplifier composition voltage comparator, can compare to the signal voltage of input, the rearmounted abnormality mark that notes abnormalities waits for that rf data exchanges, and comparison threshold voltage value can be set by software.
(4) radio frequency communication circuit
Radio frequency communication circuit uses the chip of ATMEL, operating frequency 2.4GHz, and adopt DSSS spread spectrum, under may operate at strong interference environment, communication speed reaches 250Kbit per second.This chip mainly plays exchanges data effect, and communication time is between 10mS, and during dormancy, electric current is at 20nA.Data communication interface is SPI protocol, and the instruction of EFM32 chip and data are all transmitted by SPI, CLK maximum clock frequency 8MHz.Transmitting power can be set by software, maximum+3dbm, and this device setting minimum transmit power-17.2dbm, can meet communication need.
(5) inversion step-up circuit
Inversion step-up circuit is made up of subsidiary components such as inductance element, MOSFET power tubes, be operated within the scope of 1MHZ, EFM32 chip produces the break-make of pwm pulse control MOSFET pipe, consequent flyback electromotive force to large bulk capacitance charging, produces freeze mode electromagnet in the voltage gadgetize switching device shifter of about 12V as switching driving power after fast recovery diode rectification.
(6) high pressure switch driving circuit
The voltage of the 12V utilizing inversion step-up circuit to export realizes the action drives to mechanical switching devices.
(7) electric power management circuit
The present invention adopts lithium battery as power supply, need enabling wireless radio frequency unit to carry out when data syn-chronization exchange that communication completes data, and less radio-frequency fractional transmission electric current is about 10mA, and launch and accept one group of data need the time of 5 ~ 10mS.When normally working, swap data just identifiable design high pressure the need of switching, so frequent data item transmitting-receiving can reduce battery.This method is under the prerequisite ensureing data communication, reduce emitting times as far as possible, in strict accordance with sequential working in work, each exchanges data just will can determine whether perform high pressure switching action after CPU and software analysis process, just can carry out next wireless RF data after X, Y module designated time and exchange communication, the designated time is determined by environmental parameter, between 5 ~ 60 seconds, this mode module most operating time, under μ A level electric current, extends service time of battery.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a boundary defence high-voltage fence against short-circuit control method, is characterized in that, the High voltage output loop of boundary defence high-voltage fence is connected in series against short-circuit control device; Described against short-circuit control device comprises two against short-circuit control modules, is designated as module X and module Y; High-voltaghe compartment A, B two high-voltage lines to high voltage network output high-tension electricity are connected in series an against short-circuit control module respectively, and each against short-circuit control module obtains the load current size of self place high-voltage line, and each against short-circuit control module is every setting communication time T
1by the mutual its data of wireless communication mode, and carry out switching judging and control according to interaction data; One of them against short-circuit control module is master control side, and another against short-circuit control module is a point prosecutor; Divide the data of prosecutor every setting communication time T
1be uploaded to master control side, high-voltage line switching judging is determined by master control side:
Situation is one of A, B two high-voltage lines shorted to earth 1.:
When only having a side phenomenon that load current transfinites to be detected in module X and module Y, then control to detect that a side of this phenomenon disconnects the High voltage output of self place high-voltage line;
Situation is short circuit between A, B two high-voltage lines 2.:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side exits the state of transfiniting, and now keeps the on off operating mode of current two-way high-voltage line constant;
All there is short circuit in situation 3. A road, B road, the earth:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side still transfinites, and now switches the on off operating mode of current two-way high-voltage line; And proceed data interaction, when next communication time arrives again, whether the load current not disconnecting a side exits the state of transfiniting, if so, then 2. process according to situation, otherwise, again switch the on off operating mode of current two-way high-voltage line, so circulate.
2. the method for claim 1, is characterized in that, described setting communication time T
1span be: 5 ~ 60 seconds.
3. the method for claim 1, it is characterized in that, the method comprise dispatch from the factory before clock synchronous is carried out to each against short-circuit control module, specifically comprise: each against short-circuit control module is placed in the communication range of calibration instrument respectively, calibration instrument tranmitting data register signal; After against short-circuit control module receives described clock signal, self clock is aimed at clock signal, and oneself state is demarcated as factory mode; Under factory mode, against short-circuit control module is all in holding state, and only reservation clock and current sense function normally work; After the installation of against short-circuit control module, with high pressure tools touching also short circuit high-voltage line, now each against short-circuit control module all detects that the load current of place high-voltage line transfinites, and present mode is factory mode, then oneself state is revised as mode of operation, and starts the normal work of each composition hardware in against short-circuit control module;
Against short-circuit control module in the operational mode, when there is anomalous communication situation, against short-circuit control module carries out the synchronous of clock voluntarily, be specially: against short-circuit control module cannot receive other against short-circuit control module data at the communication time of agreement and then start query pattern, under this query pattern, master control side every one interval time t
asend a synchronizing information to each point of prosecutor, synchronizing information sending duration is α, each t interval time sending synchronizing information
ashorten successively; Each point of prosecutor every one interval time t
breceive a synchronizing information, it is also α that the reception of synchronizing information is held time; t
bwith t
ainitial value identical, t
bremain unchanged.
4. method as claimed in claim 3, is characterized in that, interval time t
achanging Pattern be t
a=T-(n-1) × △, T is the basic interval time and t that set
b=T, n are the subsynchronous information of transmission n-th, and △ is t
ashortening step-length.
5. the method as described in Claims 1-4 any one, it is characterized in that, the decision procedure that the load current of high-voltage line transfinites is: the electric current that high-voltage line flows through against short-circuit control device is greater than setting threshold and the retention time is greater than setting duration, then judge that the load current of high-voltage line transfinites.
6. a boundary defence high-voltage fence against short-circuit control device, is characterized in that, this device comprises two against short-circuit control modules, is designated as module X and module Y, is connected on high-voltaghe compartment respectively and exports to high voltage network on A, B two high-voltage lines of high-tension electricity; Each against short-circuit control module obtains the load current size of self place high-voltage line, and each against short-circuit control module is every setting communication time T
1by the mutual its data of wireless communication mode, and carry out switching judging and control according to interaction data; One of them against short-circuit control module is master control side, and another against short-circuit control module is a point prosecutor; Divide the data of prosecutor every setting communication time T
1be uploaded to master control side, high-voltage line switching judging is determined by master control side:
Situation is one of A, B two high-voltage lines shorted to earth 1.:
When only having a side phenomenon that load current transfinites to be detected in module X and module Y, then control to detect that a side of this phenomenon disconnects the High voltage output of self place high-voltage line;
Situation is short circuit between A, B two high-voltage lines 2.:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side exits the state of transfiniting, and now keeps the on off operating mode of current two-way high-voltage line constant;
All there is short circuit in situation 3. A road, B road, the earth:
When module X and module Y detects the phenomenon that load current transfinites simultaneously, control a wherein side and first disconnect the High voltage output of place high-voltage line, the opposing party detects the change of place high-voltage line load current, when next communication time arrives, the load current not disconnecting a side still transfinites, and now switches the on off operating mode of current two-way high-voltage line; And proceed data interaction, when next communication time arrives again, whether the load current not disconnecting a side exits the state of transfiniting, if so, then 2. process according to situation, otherwise, again switch the on off operating mode of current two-way high-voltage line, so circulate.
7. the against short-circuit control module for boundary defence high-voltage fence against short-circuit control device as claimed in claim 6, it is characterized in that, this against short-circuit control module is arranged on controlled high-tension line, it comprises: High-Voltage Insulation outer cover, and is arranged on mechanical switching devices and the control circuit of High-Voltage Insulation outer cover inside; Described control circuit comprises current detection circuit, Cortex-M3 governor circuit, radio frequency communication circuit, inversion step-up circuit, high pressure switch driving circuit and electric power management circuit; Cortex-M3 governor circuit is connected with other each control circuit assemblies; Mechanical switching devices is connected with Cortex-M3 governor circuit with high pressure switch driving circuit;
Mechanical switching devices, is connected in high-voltage line, for the cut-out that realizes high-voltage line be communicated with, and return the current handoff state of high-voltage line to Cortex-M3 governor circuit;
Current detection circuit, for the load current adopting contactless current transformer to detect high-voltage line, sends to Cortex-M3 governor circuit after signal transacting;
Radio frequency communication circuit, for realizing the exchanges data with other against short-circuit control modules in against short-circuit control device;
Cortex-M3 governor circuit, disconnecting and the control be communicated with for judgement, the high-voltage line realizing load current, when judging only have the load current of self place high-voltage line to transfinite according to exchanges data result, cutting off the High voltage output of place high-voltage line; When judging that the load current of all high-voltage lines all transfinites according to exchanges data result, mutually to cooperate the High voltage output being interrupted and disconnecting each high-voltage line in turn with other against short-circuit control modules, having remained a road High voltage output; Cortex-M3 governor circuit is also responsible for the telecommunication management of radio frequency communication circuit;
Inversion step-up circuit, the electric energy for realizing being provided by electric power management circuit is converted to high drive electric energy;
High pressure switch driving circuit utilizes the action drives of described high drive electric energy realization to mechanical switching devices;
Electric power management circuit adopts battery as power supply, and the electric energy for realizing against short-circuit control module provides and manages.
8. module as claimed in claim 7, it is characterized in that, described mechanical switching devices is made up of high pressure tongue tube, permanent magnet, freeze mode electromagnet and position detecting device; Controlled high-voltage line is accessed at the two ends of high pressure tongue tube; Permanent magnet is fixed on the expansion link of freeze mode electromagnet, position detecting device is positioned at the top of expansion link, when the expansion link of freeze mode electromagnet stretch out put in place time, permanent magnet is positioned at the position that high pressure reed switch contact can be made to disconnect, when the expansion link retraction of freeze mode electromagnet puts in place, permanent magnet is positioned at the position that high pressure reed switch contact can be made to connect.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2362149Y (en) * | 1997-04-13 | 2000-02-02 | 衢州电力自动化设备厂 | Monitoring device for high-voltage power grid in the prison wall |
| CN1419220A (en) * | 2002-12-26 | 2003-05-21 | 朱肃生 | Intelligent circumference high-voltage electric net system |
| CN1900984A (en) * | 2006-07-21 | 2007-01-24 | 北京时代光华电子技术有限公司 | Circumference all-weather defence system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752906B (en) * | 2009-12-17 | 2012-02-01 | 宁波兴邦电器有限公司 | High-voltage switch intelligent control system and control method thereof |
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2013
- 2013-02-07 CN CN201310049364.4A patent/CN103178505B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2362149Y (en) * | 1997-04-13 | 2000-02-02 | 衢州电力自动化设备厂 | Monitoring device for high-voltage power grid in the prison wall |
| CN1419220A (en) * | 2002-12-26 | 2003-05-21 | 朱肃生 | Intelligent circumference high-voltage electric net system |
| CN1900984A (en) * | 2006-07-21 | 2007-01-24 | 北京时代光华电子技术有限公司 | Circumference all-weather defence system |
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Effective date of registration: 20160216 Address after: 100085, three floor, building 30, information road, Haidian District, Beijing Patentee after: Beijing Times Bright Electronic Technology Co.,Ltd. Address before: 100085, room three, building 3024, building 30, information road, Beijing, Haidian District Patentee before: Zhu Susheng |
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