CN102638037A - Power supply control method and power supply control system of communication equipment as well as power supply system - Google Patents
Power supply control method and power supply control system of communication equipment as well as power supply system Download PDFInfo
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- CN102638037A CN102638037A CN2012100699939A CN201210069993A CN102638037A CN 102638037 A CN102638037 A CN 102638037A CN 2012100699939 A CN2012100699939 A CN 2012100699939A CN 201210069993 A CN201210069993 A CN 201210069993A CN 102638037 A CN102638037 A CN 102638037A
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Abstract
The embodiment of the invention discloses a power supply control system and a power supply control method of communication equipment, as well as a power supply system comprising the control system of the communication equipment. The control system comprises control switches and an alternating current measuring and controlling circuit, wherein the control switches are arranged on three-phase lines; the alternating current measuring and controlling circuit is connected with the three-phase lines and is used for detecting the voltage value of each phase line, maintaining a phase line with a qualified voltage value to be conductive, and when a phase line is determined to have an unqualified voltage value, controlling the control switch to switch off the phase line and to conduct the output end of the phase line with the phase line with qualified voltage value. According to the embodiment of the invention, by detecting the voltage value of each phase line, whether an unqualified phase exists or whether a phase is opened is known, and, when the unqualified phase or opened phase is determined, power is supplied for the opened phase or the unqualified phase through the qualified phase, thus ensuring normal three-phase power supply.
Description
Technical field
The present invention relates to the power supply technique field, more particularly, relate to a kind of method for controlling power supply, system and electric power system of communication equipment.
Background technology
In power system, if the civil power situation is relatively poor, as three-phase alternating current phase shortage (lacking a phase or a two-phase) appears, generally will cause the load dead electricity of voltage disappearance phase.Various device in the communication system; In general owing to relate to real time communication; Power requirement there is higher power supply reliability; Therefore communication power supply all can be equipped with storage battery and back power supply (like oily machine), starts (for example when the civil power situation is relatively poor, perhaps starting the hydro power generation power supply through storage battery power supply) when needed, to guarantee the operate as normal of communication equipment.
But, when the civil power situation is relatively poor, might cause oily machine frequent starting, thereby cause bigger energy resource consumption.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of electric power supply control system, method and electric power system of communication equipment, with when the three-phase alternating current phase shortage, thereby by normal phase give disappearance mutually power supply reduce oil start, reduce energy resource consumption.
The embodiment of the invention is achieved in that
On the one hand, a kind of electric power supply control system of communication equipment comprises:
Be arranged at the control switch on the three-phase line;
The interchange telemetry circuit that connects three-phase line; It detects the magnitude of voltage of each phase circuit; Keep the qualified phase line conduction of magnitude of voltage; And when determining the underproof phase circuit of magnitude of voltage, control an output and a circuit mutually that magnitude of voltage is qualified that said control switch breaks off this phase circuit and connects this phase circuit.
On the other hand, a kind of electric power system of communication equipment comprises zero line, three-phase input end, output and connects the phase circuit between each phase input and the output, also comprises like the described control system of preamble.
On the other hand, a kind of electric power supply control system of communication equipment is applied to single-phase multiple-way feed system, comprising:
Be arranged at the control switch on many circuits;
The telemetry circuit that connects each bar circuit, it detects the magnitude of voltage of each bar circuit, when the magnitude of voltage of the circuit of confirming current use is defective, controls said control switch and breaks off original circuit and connect the qualified circuit of magnitude of voltage.
On the other hand, a kind of electric power system of communication equipment comprises phase input, output and connects many homophase circuits between phase input and the output, also comprises like the described control system of preamble.
On the other hand, a kind of method for controlling power supply of communication equipment comprises:
Detect the magnitude of voltage of each phase circuit in the three-phase line;
Whether the magnitude of voltage of judging each phase circuit is qualified, keeps the qualified phase line conduction of magnitude of voltage, and when determining the underproof phase circuit of magnitude of voltage, controls an output and a circuit mutually that magnitude of voltage is qualified that this phase circuit breaks off and connect this phase circuit.
On the other hand, a kind of method for controlling power supply of communication equipment is applied to single-phase multiple-way feed system, comprising:
Detect the magnitude of voltage of each bar circuit;
When the magnitude of voltage of the circuit of confirming current use is defective, breaks off original circuit and connect the qualified circuit of magnitude of voltage.
Can find out that from above-mentioned technical scheme compared with prior art, the embodiment of the invention is passed through the detection to the magnitude of voltage of each phase circuit; Understand and whether have defective phase or phase shortage; And when confirming defective phase or phase shortage to occur,, be communicated with the circuit and other qualified circuits mutually of defective phase or phase shortage through the control switch of control setting on three-phase line; Promptly through qualified be the line powering of phase shortage or defective phase mutually, to guarantee normally carrying out of three phase supply.And this process can realize that through exchanging telemetry circuit and three switches simple in structure, logic is clear.
In addition, control switch has Chang Kai and normally closed two kinds of contacts, and any time has only a kind of closing of contact, realizes mechanical interlockedly when can guarantee electric blocking, has avoided short circuit hidden danger, has improved fail safe and reliability.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the electric power supply control system of a kind of communication equipment that Fig. 1 provides for the embodiment of the invention;
The structural representation of the electric power supply control system of the another kind of communication equipment that Fig. 2 provides for the embodiment of the invention;
The structural representation of the electric power supply control system of another communication equipment that Fig. 3 provides for the embodiment of the invention;
The particular circuit configurations sketch map of the electric power supply control system of a kind of communication equipment that Fig. 4 provides for the embodiment of the invention;
The structural representation of control switch in the electric power supply control system of a kind of communication equipment that Fig. 5 provides for the embodiment of the invention;
In the said contactor control Driver Circuit in the electric power supply control system of a kind of communication equipment that Fig. 6 provides for the embodiment of the invention, the coil of each contactor and each syndeton sketch map of circuit mutually in the said control switch;
The structural representation of the electric power supply control system of other a kind of communication equipment that Fig. 7 provides for the embodiment of the invention;
The flow chart of the method for controlling power supply of a kind of communication equipment that Fig. 8 provides for the embodiment of the invention;
The flow chart of the method for controlling power supply of the another kind of communication equipment that Fig. 9 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of technical scheme; Magnitude of voltage through detecting on the three-phase line judges whether to exist phase shortage or defective phase; And confirming to exist phase shortage or defective phase time; Through qualified be the line powering of phase shortage or defective phase mutually, to guarantee normally carrying out of three phase supply.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The electric power supply control system of a kind of communication equipment that the embodiment of the invention provides comprises: the magnitude of voltage of control switch and detection three-phase line is to control the interchange measurement and control unit of said control switch work according to testing result.Gauge tap with exchange measurement and control unit and can have different structural forms, describe in detail below by several object lessons.
Instance one
Fig. 1 shows a kind of possibility structure of said electric power supply control system, and comprise control switch and exchange measurement and control unit, wherein:
Said control switch comprises three contactors, places on the different phase circuits, and each contactor comprises normally opened contact and normally-closed contact, and said normally opened contact is arranged on the phase circuit, when closure, accepts place phase line input, to supply power to output; Said normally-closed contact connects said normally opened contact near the normally opened contact of end of line output and the adjacent tentaculum end near line output; When closure, accept other contactor place phase line inputs, with output power supply to this contactor place phase circuit.
Concrete, said control switch comprises KM1, KM2 and KM3, these several contactors are and exchange four utmost point contactors, comprise two pairs of normally opened contacts and two pairs of normally-closed contacts respectively, wherein:
The normally opened contact of KM1 is arranged on the A phase circuit, and the normal opened contact of KM2 is arranged on the B phase circuit, and the normal opened contact of KM3 is arranged on the C phase circuit.
Normally-closed contact one end of KM1 connects the end of the normally opened contact of KM1 near the phase line output, and the other end of the normally-closed contact of KM1 connects the end of the normally opened contact of KM2 near the phase line output; Normally-closed contact one end of KM2 connects the end of the normally opened contact of KM2 near the phase line output, and the other end of the normally-closed contact of KM2 connects the end of the normally opened contact of KM3 near the phase line output; One end of the normally-closed contact of KM3 connects the end of the normally opened contact of KM3 near the phase line output, and the other end of the normally-closed contact of KM3 connects the end of the normally opened contact of KM1 near the phase line output.
Said interchange measurement and control unit is made up of several coils, and these several coils are controlled the closed of above-mentioned KM1, KM2 and KM3 respectively or broken off.Concrete, said interchange monitoring unit is made up of coil KM1 ', coil KM2 ' and coil KM3 ', and wherein, KM1 ' connects A phase circuit and zero line N, and KM2 ' connects B phase circuit and zero line N, and KM3 ' connects C phase circuit and zero line N.
Native system is when work, and under the normal condition, the three-phase input is normal; Be that the magnitude of voltage of circuit is qualified mutually for A, B and C; Then KM1 ', KM2 ' and KM3 ' electric, the normally opened contact among corresponding KM1, KM2 and the KM3 is closed, normally-closed contact breaks off, by normally opened contact to three-phase output power supply.KM1 ' dead electricity when the magnitude of voltage of A phase circuit is defective, and the magnitude of voltage of B phase circuit is qualified, then the normally opened contact of KM1 breaks off, normally-closed contact is closed, is communicated with B phase circuit and the A output of circuit mutually thus, promptly supplies power for the output of A phase circuit by B phase circuit.In like manner, when defective and magnitude of voltage C phase circuit of the magnitude of voltage of B phase circuit is qualified, give B phase circuit output power supply by C phase circuit; When defective and magnitude of voltage A phase circuit of the magnitude of voltage of C phase circuit is qualified, give C phase circuit output power supply by A phase circuit.In addition, when the magnitude of voltage of any two phase circuits is defective, give the underproof phase circuit output of above-mentioned two magnitudes of voltage power supply by the qualified phase circuit of a remaining magnitude of voltage.For example: when the magnitude of voltage of A, B phase circuit is all defective; By the normally-closed contact and the B mutually output connection of circuit of C phase circuit via the closure of KM2; Simultaneously by the normally-closed contact of the closure of the normally-closed contact of the closure of KM2 and KM1 and A mutually the output of circuit is connected, promptly export to A, B phase circuit and supply power by C phase circuit.
The control logic relation of each phase voltage disappearance and deciliter action of corresponding trigger is as shown in table 1 in the system, and wherein, "+" expression coil gets electric, "-" expression coil losing electricity.
Table 1
| KM1’ | KM2’ | KM3’ | |
| Normal condition | + | + | + |
| A lacks mutually | - | + | + |
| B lacks mutually | + | - | + |
| C lacks mutually | + | + | - |
| AB lacks mutually | - | - | + |
| AC lacks mutually | - | + | - |
| BC lacks mutually | + | - | - |
Above-mentioned described magnitude of voltage is qualified to refer to magnitude of voltage non-vanishing (promptly not phase shortage) or magnitude of voltage is lower than preset thresholding (general, as when magnitude of voltage is lower than certain value, can't to support the operation of contactor).
The embodiment of the invention is passed through the detection to the magnitude of voltage of each phase circuit; When detecting defective phase or phase shortage; Through the control switch of control setting on three-phase line; The circuit and other qualified circuits mutually that are communicated with defective phase or phase shortage, promptly through qualified be the line powering of phase shortage or defective phase mutually, to guarantee normally carrying out of three phase supply.And; This process is through connecing identical phase circuit with coil with the contactor that receives coil control; The magnitude of voltage of phase circuit whether qualified be reacted directly into coil electric, dead electricity, and coil dead electricity be reacted in the contactor often open, the disconnection and the closure of normally-closed contact, logic is simple, clear; Structural reduction, equipment cost is lower.Simultaneously, adopt control switch, make any time have only a kind of closing of contact, realize mechanical interlockedly when can guarantee electric blocking, avoided short circuit hidden danger, improved fail safe and reliability with normally-open normally-close contact.
Instance two
Fig. 2 illustrates the another kind possibility structure of said electric power supply control system, and comprise control switch and exchange measurement and control unit, wherein:
The structure of the control switch in the structure of said control switch and the instance one is different, and difference is normally-closed contact and normally opened contact position opposite.Said control switch comprises three contactors equally, places on the different phase circuits, and the normally-closed contact of each contactor is arranged on the phase circuit, when closure, accepts place phase line input, to supply power to output; Normally opened contact then connects said normally-closed contact near the normally-closed contact of end of line output and the adjacent tentaculum end near line output; When closure, accept other contactor place phase line inputs, with output power supply to this contactor place phase circuit.
Concrete, said control switch comprises KM4, KM5 and KM6, wherein:
The normally-closed contact of KM4 is arranged on the A phase circuit, and the normally closed contact of KM5 is arranged on the B phase circuit, and the normally closed contact of KM6 is arranged on the C phase circuit.
Normally opened contact one end of KM4 connects the end of the normally-closed contact of KM4 near the phase line output, and the other end of the normally opened contact of KM4 connects the end of the normally-closed contact of KM5 near the phase line output; Normally opened contact one end of KM5 connects the end of the normally-closed contact of KM5 near the phase line output, and the other end of the normally opened contact of KM5 connects the normally-closed contact of KM6; One end of the normally opened contact of KM6 connects the end of the normally-closed contact of KM6 near the phase line output, and the other end of the normally opened contact of KM6 connects the end of the normally-closed contact of KM7 near the phase line output.
Said interchange measurement and control unit comprises a plurality of electronic circuits, and each electronic circuit links to each other with isopen road not and be corresponding one by one with contactor in the said control switch.
Each electronic circuit includes testing circuit 21, comparison circuit 22 and contactor control Driver Circuit 23, wherein:
Said testing circuit 21 connects the phase circuit to detect the magnitude of voltage of this phase circuit.
Said comparison circuit 22 links to each other with said testing circuit 21, so that detected magnitude of voltage and preset value are compared.
Said contactor control Driver Circuit 23 (hereinafter is referred to as drive circuit) connects said comparison circuit 22; Have the coil 24 and the driver element 25 that connect each phase circuit; This driver element 25 is used for when confirming that according to comparative result magnitude of voltage is defective; The coil 24 that connects this phase circuit is got; With normally-closed contact and the closed normally opened contact in the contactor that breaks off correspondence, thereby connect the output of this phase circuit and the circuit mutually of other qualified voltage value, promptly supply power by the phase circuit of said qualified voltage value.
In practical operation, whether whether qualified magnitude of voltage is can be zero next definite according to magnitude of voltage, and it is defective (meaning phase shortage) that magnitude of voltage is zero, otherwise, mean that magnitude of voltage is qualified.And in the other embodiment of the present invention, the qualified magnitude of voltage that also can be meant of said magnitude of voltage is lower than preset value, and for example, the normal voltage value is 220VAC, when being lower than half the (being 110VAC) of this normal value, confirms that magnitude of voltage is defective.The concrete numerical value of preset value can be set based on actual needs.
Fig. 3 shows said a kind of concrete logic module sketch map and the particular circuit configurations figure that exchanges measurement and control unit respectively with Fig. 4.
As can be seen from Figure 3:
The electronic circuit corresponding with each coil comprises: said detecting unit 21 comprises transformer 31 and rectifying and wave-filtering partial pressure unit 32, and this rectifying and wave-filtering partial pressure unit 32 connects said transformer 31 outputs, is used to carry out rectification, filtering and divides press operation.
Said comparing unit 22 comprises operational amplifier 33, and its negative input end connects the output of said rectifying and wave-filtering partial pressure unit 32, and positive input terminal is through voltage stabilizing didoe ground connection, and voltage keeps preset value.
Said driver element 25 comprises controllable silicon 34 and relay 35, and wherein, conducting when said controllable silicon 34 has voltage at the output of the operational amplifier 33 that connects does not end when this output does not have voltage; Said relay one end connects said controllable silicon, other end ground connection, the coil series connection that its contact is corresponding with the place electronic circuit.
Coil (like the KM1 ') end that said electronic circuit is corresponding connects zero line; Circuit is continuous mutually with each through diode for the other end; Said diode cathode connects each phase circuit, the negative lead circle, also promptly: connects one through diode and each continuous circuit (circuit L) of circuit mutually.
Fig. 4 has embodied the physical circuit that exchanges measurement and control unit on the whole, is described in detail in the face of its structure down:
X1, X2 and X3 are three transformers, and specification is that AC220V converts 12V-0-12V into, through obtaining comparatively stable 12V direct current behind rectifier diode D1, D3, D5, filter capacitor C1, C2, the C3.
VR1, VR2, VR3 are the adjustable resistance of maximum 10K, and ZD1, ZD2, ZD3 are three voltage stabilizing didoes, voltage of voltage regulation 5.1V, and as the input of amplifier anode, ZD4, ZD5, ZD6 are three voltage stabilizing didoes, voltage of voltage regulation 5.1V is in order to supply power to relay coil; IC1, IC2, IC3 are three amplifiers, and T1, T2, T3 are three controllable silicons, and RL1, RL2, RL3 are three relays, and control voltage is DC5V, contact voltage AC250V, electric current 2A.
With to A phase circuit be controlled to be example (mode and process to the control of B, C phase circuit are basic identical therewith), under the normal condition, when being input as 220V, become DC12V through voltage behind the X1; Adjusting VR1, VR2, VR3 resistance value are 5K, and after R1, VR1 dividing potential drop, amplifier negative terminal input place voltage is: 12*5/6=10V; Positive terminal voltage is 5.1V, so operational amplifier IC1 output no-voltage, not conducting of T1; The RL1 relay contact breaks off, and coil KM1 ' breaks off, and the KM1 normally-closed contact is in closure state; A phase circuit inputs to output power supply, if the magnitude of voltage of B, C phase circuit is also normal, and three-phase normal power supply then.And when input voltage will be for 112V, it was 5.1V that the same calculating can get IC1 negative terminal input voltage, and this moment, IC1 was in critical condition; When voltage further descended, the input of IC1 negative terminal was less than anode input, IC1 output output voltage; Trigger the T1 conducting, the 5V direct current loads on relay R L1 coil through T1, drives the conducting of RL1 relay contact; Coil KM1 ' is given in the loop of closing coil KM1 ' energising, drives the action of KM1 contacts of contactor; The KM1 normally-closed contact breaks off, and normally opened contact is closed, exports to A through B phase circuit and supplies power mutually.
Therefore, this moment 112V be exactly system's commutation the critical voltage point (be magnitude of voltage be higher than 112V be qualified, otherwise defective).In real work, can be through regulating VR1 resistance value size, the critical commutation voltage value of regulating system within the specific limits.
The control logic relation of each phase voltage disappearance and deciliter action of corresponding trigger is as shown in table 2 in the system, and wherein, "+" expression coil gets electric, "-" expression coil losing electricity.
Table 2
| KM1’ | KM2’ | KM3’ | |
| Normal condition | - | - | - |
| A lacks mutually | + | - | - |
| B lacks mutually | - | + | - |
| C lacks mutually | - | - | + |
| AB lacks mutually | + | + | - |
| AC lacks mutually | + | - | + |
| BC lacks mutually | - | + | + |
The scheme that this instance provides can be when detecting defective phase or phase shortage, through qualified be the line powering of phase shortage or defective phase mutually, to guarantee normally carrying out of three phase supply.And also adopt the control switch that the normally-open normally-close contact is arranged, make any time have only a kind of closing of contact, realize mechanical interlockedly when can guarantee electric blocking, avoided short circuit hidden danger, improved fail safe and reliability.Simultaneously, can pass through to regulate the concrete data of the mode of related resistors resistance with adjustment qualified voltage value, so that it is use the various demands in the real work, convenient, flexible.In addition, present embodiment adopts the parallel three phase redundant power supply, and promptly coil (like a KM1 ') end connects zero line; Circuit is continuous mutually with each through diode for the other end; Said diode cathode connects each phase circuit, the negative lead circle, and this mode can guarantee whenever can both provide maximum voltage to drive power supply to contactor; Thereby contactor can't move when preventing brownout or dead electricity, and then has improved reliability.
Instance three
Fig. 5 illustrates other a kind of possibility structure of said electric power supply control system, and comprise control switch and exchange measurement and control unit, wherein:
Said control switch comprises: a plurality ofly be arranged at the contactor on the phase circuit respectively and be arranged at the contactor between the phase circuit.Concrete, comprising:
Place contactor KMA on the A phase circuit, place contactor KMB on the B phase circuit, place the contactor KMC on the C phase circuit; And at the contactor KM1 between A phase circuit and the B phase circuit, KM2 between B phase circuit and C phase circuit; Said KM1 two ends connect KMA and A circuit between circuit, KM2 and the B phase line output between the line output mutually respectively, and said KM2 two ends connect KM2 and B circuit between circuit, KM3 and the C phase line output between the line output mutually respectively.
Said interchange telemetry circuit comprises testing circuit, comparison circuit and is connected the contactor control Driver Circuit of said comparison circuit that wherein: said testing circuit connects each phase circuit to detect the magnitude of voltage of each phase circuit; Said comparison circuit links to each other with said testing circuit, so that detected magnitude of voltage and preset value are compared; Said contactor control Driver Circuit has controllable silicon, relay and is connected the coil of each phase circuit, wherein, and the conducting when the magnitude of voltage of the comparative result indication phase circuit of said comparing unit is qualified of said controllable silicon, otherwise end; Said relay one end connects said controllable silicon, other end ground connection, its contact and the coil series connection that connects corresponding circuit mutually.
Elementary Function of the same name shown in Figure 4 is basic identical in testing circuit, comparison circuit and the preamble instance two; And the contactor control Driver Circuit also the structure major part in Fig. 4 is identical, difference is in this instance, can increase other control contacts on the series circuit of coil; Please refer to Fig. 6; In the control Driver Circuit of contactor described in the present embodiment, the coil of each contactor and each syndeton of circuit mutually in the said control switch comprise:
Connect zero line and all coil KMA ', coil KMB ', coil KMC ', coil KM1 ' and the coil KM2 ' of circuit mutually, wherein coil KMA ', coil KMB ' and coil KMC ' are respectively applied for closure or the disconnection of controlling said KMA, KMB and KMC.
First switch 601 of connecting with said KMA ', KMB ', KMC ', KM1 ' and KM2 ' respectively, second switch 602, the 3rd switch 603, the 4th switch 604 and the 5th switch 605; The normally opened contact and the normally-closed contact of said first switch 601 and the same each other relay of the 4th switch 604 (RL1 among Fig. 4), the normally opened contact and the normally-closed contact of said the 3rd switch 603 and the same each other relay of the 5th switch 605 (RL3 among Fig. 4).
RL2 in the 6th switch 606 parallelly connected, said the 6th switch 606 and the same each other relay Fig. 4 of second switch 602) normally opened contact and normally-closed contact with the 4th switch 604.
Connect with said KM1 ' and receive the minion of KMB ' control to close 607, and close 607 parallelly connected and the octavo passes 608 that controlled by KMA ' with said minion.
The 9th switch 609 of connecting and the tenth switch 610 with said KM2 '; With the 11 parallelly connected switch 611 of said the 9th switch 609; And twelvemos parallelly connected with said the tenth switch 610 close 612, reach ten three switch 613 parallelly connected with said twelvemo pass 612, wherein; The 9th switch 609, the tenth switch 610 and the 13 switch 613 receive KMB ', KMA ' and KM1 ' control respectively, and the 11 switch 611 closes 612 with twelvemo and controlled by KMC '.
Native system is in when work, when three-phase just often, KMA, KMB, KMC are closed, KM1, KM2 break off; System output three-phase when exchanging telemetry circuit and detect A phase voltage disappearance or voltage and be lower than a certain set point, breaks off KMA; Even it is electric that the RL1 coil gets, so that first switch (normally-closed contact of RL1) disconnection, and after confirming that KMA breaks off; After Preset Time time-delay (for example 10S, concrete delay time can be regulated according to actual conditions), closed KM1; Promptly closed the 4th switch (normally opened contact of RL1), it is electric that KM1 ' is got, and supplies power mutually through the relative A of normal B; When lacking, break off KMA, KMB as A, when B is identical, and after confirming that KMA, KMB break off; After Preset Time time-delay (for example 10S), closed KM1, KM2 supply power for fault phase A, B with normal phase C when identical; Guarantee follow-up load normal power supply, control logic figure sees table 3 in detail, wherein; "+" expression coil gets electric, "-" expression coil losing electricity.
Table 3
In the said control switch shown in Figure 6 the coil of each contactor with each mutually the implementation procedure of the electric blocking of the syndeton of circuit be: when KMA and KMB closed simultaneously (controlling) by KMA ', KMB ' adhesive simultaneously; The normally-closed contact of contactor KMA, KMB breaks off (i.e. the 4th switch 604 and 606 disconnections of the 6th switch; First switch 601 and second switch 602 closures); KM1 ' loop is broken off, and makes contactor KM1 break off, and guarantees short trouble can not occur between A, B are mutually; And when KMB and KMC closed simultaneously (controlling by KMB ' and KMC ' adhesive simultaneously); The normally-closed contact of contactor KMB, KMC breaks off (the 9th switch 609, the 11 switches 611 break off), and the loop of KM2 ' is broken off; KM2 can not be closed, short trouble can not occur between B, the C phase; When KMA, KMC, KM1 were closed simultaneously, KM1, KMA, KMC broke off simultaneously, and KM2 ' loop is broken off, and KM2 can not be closed, short trouble can not occur between A, the C phase.
Technological thought of the present invention can also be expanded and be used for single-phase multiple-way feed system, when the power supply failure of a certain road of load, automatically switches to other route and supplies power, and guarantees power supply reliability.
Fig. 7 shows single-phase duplex feeding structure chart, and is as shown in the figure, comprises control switch and telemetry circuit, and wherein, said control switch is that KMD is made up of normally-closed contact and normally opened contact, and concrete structure can be with reference to the structure of the contactor KM1 among the preamble embodiment; Said telemetry circuit connects phase circuit and zero line, detects the magnitude of voltage of A circuit and B circuit, when the magnitude of voltage of the circuit of confirming current use is defective, controls said control switch and breaks off original circuit (A circuit) and connect the qualified circuit of magnitude of voltage (B circuit).
Said telemetry circuit is specially the coil KMD ' of the said control switch of control, the normally-closed contact of its upper and lower electric control KMD and the keying of normally opened contact.
Need to prove, comprise that the electric power system of the control system that each embodiment of preamble provides belongs to protection category of the present invention too.
In addition, this paper also provides the method that realizes above-mentioned control system control procedure, i.e. a kind of method for controlling power supply of communication equipment, and basic procedure is as shown in Figure 8, may further comprise the steps:
The magnitude of voltage of each phase circuit in step S81, the detection three-phase line;
Step S82 judges whether the magnitude of voltage of each phase circuit is qualified, if qualified, then gets into step S83; Otherwise get into step S84.
Step S83, keep the qualified phase line conduction of magnitude of voltage.
Step S84, control an output and a circuit mutually that magnitude of voltage is qualified that this phase circuit breaks off and connect this phase circuit.
The realization of each step also can realize through the keying of the contactor of coil control setting on said three-phase line, the structure of contactor, and the syndeton of contactor, coil and three-phase line repeats no more at this please with reference to the content of preamble components of system as directed.
Corresponding control system shown in Figure 7, this paper also provides a kind of method for controlling power supply, and its basic procedure is as shown in Figure 9, may further comprise the steps:
Step S91, detect the magnitude of voltage of each bar circuit;
Step S92, when the magnitude of voltage of the circuit of confirming current use is defective, break off original circuit and connect the qualified circuit of magnitude of voltage.
Particular content also can be with reference to the related content of preamble system embodiment, does not do equally at this and gives unnecessary details.
Need to prove that each embodiment adopts the mode of going forward one by one to describe in this specification, what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part is partly explained referring to method and is got final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (16)
1. the electric power supply control system of a communication equipment is characterized in that, comprising:
Be arranged at the control switch on the three-phase line;
The interchange telemetry circuit that connects three-phase line; It detects the magnitude of voltage of each phase circuit; Keep the qualified phase line conduction of magnitude of voltage; And when determining the underproof phase circuit of magnitude of voltage, control an output and a circuit mutually that magnitude of voltage is qualified that said control switch breaks off this phase circuit and connects this phase circuit.
2. control system according to claim 1 is characterized in that, said control switch comprises three contactors, places on the different phase circuits, and each contactor comprises:
Be arranged at the normally opened contact on the phase circuit, when closure, accept place phase line input, to supply power to output;
Connect said normally opened contact near the normally opened contact of end of line output and adjacent tentaculum normally-closed contact near an end of line output; When closure, accept other contactor place phase line inputs, with output power supply to this contactor place phase circuit.
3. control system according to claim 2 is characterized in that, said interchange telemetry circuit specifically connects zero line respectively by three and forms with the coil on isopen road not, and each coil is corresponding with the contactor on its same line;
The closure when normally opened contact of each said contactor powers at the corresponding coil of this contactor is broken off during power down, and the normally-closed contact of each said contactor breaks off when the corresponding coil of this contactor powers on, and is closed during power down.
4. control system according to claim 1 is characterized in that, said control switch comprises three contactors, places on the different phase circuits, and each contactor comprises:
Be arranged at the normally-closed contact on the phase circuit, when closure, accept place phase line input, to supply power to output;
Connect said normally-closed contact near the normally-closed contact of end of line output and adjacent tentaculum normally opened contact near an end of line output; When closure, accept other contactor place phase line inputs, with output power supply to this contactor place phase circuit.
5. control system according to claim 4 is characterized in that, said interchange telemetry circuit comprises a plurality of electronic circuits, and each electronic circuit links to each other with isopen road not and be corresponding one by one with contactor in the said control switch, and said electronic circuit comprises:
Connect the testing circuit of phase circuit with the magnitude of voltage that detects this phase circuit;
Link to each other with said testing circuit, with the comparison circuit that detected magnitude of voltage and preset value are compared;
The contactor control Driver Circuit that connects said comparison circuit; Have the coil and the driver element that connect each phase circuit; This driver element is used for when confirming that according to comparative result magnitude of voltage is lower than the phase circuit of said preset value; It is electric that the coil that connects this phase circuit is got, to break off normally-closed contact and the closed normally opened contact in the corresponding contactor.
6. control system according to claim 5 is characterized in that,
Said testing circuit comprises transformer and rectifying and wave-filtering partial pressure unit, and this rectifying and wave-filtering partial pressure unit connects said transformer output, is used to carry out rectification, filtering and divides press operation;
Said comparing unit comprises operational amplifier, and its negative input end connects the output of said rectifying and wave-filtering partial pressure unit, and positive input terminal is through voltage stabilizing didoe ground connection, and voltage keeps preset value;
Said driver element comprises controllable silicon and relay, and wherein, conducting when said controllable silicon has voltage at the output of the operational amplifier that connects does not end when this output does not have voltage; Said relay one end connects said controllable silicon, other end ground connection, the coil series connection that its contact is corresponding with the place electronic circuit.
7. according to claim 5 or 6 described control system, it is characterized in that said coil one end connects zero line, circuit is continuous mutually with each through diode for the other end, and said diode cathode connects each phase circuit, negative lead circle.
8. control system according to claim 1 is characterized in that, said control switch comprises:
Place first, second and third contactor on A, B, the C phase circuit respectively;
The 4th contactor between A phase circuit and B phase circuit, its two ends connect said first contactor and A circuit between circuit, said second contactor and the B phase line output between the line output mutually respectively;
The 5th contactor between B phase circuit and C phase circuit, its two ends connect said second contactor and B circuit between circuit, said the 3rd contactor and the C phase line output between the line output mutually respectively.
9. control system according to claim 8 is characterized in that, said interchange telemetry circuit comprises:
Connect the testing circuit of each phase circuit with the magnitude of voltage that detects each phase circuit;
Link to each other with said testing circuit, with the comparison circuit that detected magnitude of voltage and preset value are compared;
The contactor control Driver Circuit that connects said comparison circuit has controllable silicon, relay and is connected the coil of each phase circuit, wherein, and the conducting when the magnitude of voltage of the comparative result indication phase circuit of said comparing unit is qualified of said controllable silicon, otherwise end; Said relay one end connects said controllable silicon, other end ground connection, its contact and the coil series connection that connects corresponding circuit mutually.
10. control system according to claim 9 is characterized in that, the coil of each phase circuit of said connection comprises:
Connect zero line and all first coil, second coil, tertiary coil, the 4th coil and the 5th coil of circuit mutually, wherein first coil, second coil and tertiary coil are respectively applied for the closed or disconnection of control said first contactor, second contactor and the 3rd contactor;
First switch, second switch, the 3rd switch, the 4th switch and the 5th switch of connecting with said first coil, second coil, tertiary coil, the 4th coil and the 5th coil respectively; Said first switch and the 4th switch be the normally opened contact and the normally-closed contact of same relay each other, and said the 3rd switch and the 5th switch be the normally opened contact and the normally-closed contact of same relay each other;
With the 6th switch of the 4th switch in parallel, said the 6th switch and second switch be the normally opened contact and the normally-closed contact of same relay each other;
Connect with said the 4th coil and closed by the minion of second coil control, and close octavo parallelly connected and that controlled by first coil with said minion and close;
The 9th switch and the tenth switch of connecting with said the 5th coil; The 11 switch with said the 9th switch in parallel; Reach with the twelvemo of said the 11 switch in parallel and close, and and the 13 parallelly connected switch of said twelvemo pass, wherein; The 9th switch, the tenth switch and the 13 switch are controlled by second coil, first coil and the 4th coil respectively, and the 11 switch and twelvemo are closed and controlled by tertiary coil.
11. the electric power system of a communication equipment comprises zero line, three-phase input end, output and connects the phase circuit between each phase input and the output, it is characterized in that, also comprises any described control system like preamble claim 1-10.
12. the electric power supply control system of a communication equipment is characterized in that, is applied to single-phase multiple-way feed system, comprising:
Be arranged at the control switch on many circuits;
The telemetry circuit that connects each bar circuit, it detects the magnitude of voltage of each bar circuit, when the magnitude of voltage of the circuit of confirming current use is defective, controls said control switch and breaks off original circuit and connect the qualified circuit of magnitude of voltage.
13. control system according to claim 12 is characterized in that, said control switch is that the two poles of the earth contactor, multipole contactor, single-pole double throw automatic switch and other have the control device of normally-open normally-close contact.
14. the electric power system of a communication equipment comprises phase input, output and connects many homophase circuits between phase input and the output, it is characterized in that, also comprises like preamble claim 11,12 described control system.
15. the method for controlling power supply of a communication equipment is characterized in that, comprising:
Detect the magnitude of voltage of each phase circuit in the three-phase line;
Whether the magnitude of voltage of judging each phase circuit is qualified, keeps the qualified phase line conduction of magnitude of voltage, and when determining the underproof phase circuit of magnitude of voltage, controls an output and a circuit mutually that magnitude of voltage is qualified that this phase circuit breaks off and connect this phase circuit.
16. the method for controlling power supply of a communication equipment is characterized in that, is applied to single-phase multiple-way feed system, comprising:
Detect the magnitude of voltage of each bar circuit;
When the magnitude of voltage of the circuit of confirming current use is defective, breaks off original circuit and connect the qualified circuit of magnitude of voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210069993.9A CN102638037B (en) | 2012-03-16 | 2012-03-16 | The method for controlling power supply of communication equipment, system and electric power system |
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| CN201210069993.9A CN102638037B (en) | 2012-03-16 | 2012-03-16 | The method for controlling power supply of communication equipment, system and electric power system |
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| CN105048458A (en) * | 2015-08-20 | 2015-11-11 | 国网山东高唐县供电公司 | Automatic phase selector for residential electric meter |
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| WO2018214189A1 (en) * | 2017-05-26 | 2018-11-29 | 中领世能（天津）科技有限公司 | Power supply system, and multi-stage protection device for same |
| CN111527006A (en) * | 2019-07-24 | 2020-08-11 | 深圳欣锐科技股份有限公司 | Three-phase charging circuit compatible with single-phase input and related equipment |
| CN113972674A (en) * | 2021-11-15 | 2022-01-25 | 国网四川省电力公司广安供电公司 | Low-voltage phase change switch with electric locking function, system and method |
| CN114336907A (en) * | 2021-12-09 | 2022-04-12 | 华人运通(江苏)技术有限公司 | Charging control method, device, equipment and medium for charging pile |
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| CN113972674A (en) * | 2021-11-15 | 2022-01-25 | 国网四川省电力公司广安供电公司 | Low-voltage phase change switch with electric locking function, system and method |
| CN113972674B (en) * | 2021-11-15 | 2023-12-22 | 国网四川省电力公司广安供电公司 | Low-voltage phase change switch with electric locking function, system and method |
| CN114336907A (en) * | 2021-12-09 | 2022-04-12 | 华人运通(江苏)技术有限公司 | Charging control method, device, equipment and medium for charging pile |
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| CN102638037B (en) | 2016-03-30 |
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