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CN100367626C - Non-destructive wide voltage regulation pulsating floating charge battery complete set of DC screen - Google Patents

Non-destructive wide voltage regulation pulsating floating charge battery complete set of DC screen Download PDF

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Publication number
CN100367626C
CN100367626C CNB031119077A CN03111907A CN100367626C CN 100367626 C CN100367626 C CN 100367626C CN B031119077 A CNB031119077 A CN B031119077A CN 03111907 A CN03111907 A CN 03111907A CN 100367626 C CN100367626 C CN 100367626C
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bus
battery pack
diode
voltage
charger
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CN1525618A (en
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孙海裕
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Shandong University of Science and Technology
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Abstract

一种电力系统用的无损宽调压脉动浮充蓄电池成套直流屏，它包括一条直流合闸母线，一条直流控制母线，一条充放电母线，一条共用的(M-)负母线，设置一套输出纯直流，脉动直流两种电压的浮充机和一套输出两种电压的浮充—充电两用机，设置两组蓄电池中间带一个抽头的蓄电池组；浮充机输出的纯直流接入控制母线和合闸母线，脉动直流接入蓄电池组对蓄电池进行脉动浮充；在两直流母线与两组蓄电池、充电机之间配置由七只二极管组成的无损宽调压防环流装置，保证了两组蓄电池在各种情况下无环流并运，实现了无损宽调压，保证了直流母线在各种运行状态下不失压，不欠压，不过压，满足电力系统事故停电时的高可靠性供电。

A complete set of DC panels for non-destructive wide voltage regulation pulsating floating charge batteries used in power systems, which includes a DC closing bus, a DC control bus, a charging and discharging bus, and a common (M-) negative bus, with a set of output Pure DC, pulsating DC floating charger and a set of floating charging-charging dual-purpose machine outputting two voltages, set up a battery pack with a tap in the middle of the two sets of batteries; pure DC access control of the output of the floating charging machine Busbar and closing busbar, pulsating DC connected to the battery pack for pulsating floating charge of the battery; a non-destructive wide voltage regulation anti-circulation device composed of seven diodes is installed between the two DC busbars and two sets of batteries and chargers, ensuring that the two sets of The battery is operated in parallel without circulating current under various conditions, realizing lossless wide voltage regulation, ensuring that the DC bus does not lose voltage, undervoltage, or overvoltage under various operating conditions, and meets the high reliability power supply in the event of power system accidents and power outages .

Description

The harmless complete direct current cabinet of wide-voltage-regulation pulse floating-charging accumulator
Technical field:
The application belongs to the direct current cabinet that electric power system is used, and is applicable to the complete direct current cabinets of all kinds of storage batterys such as lead is exempted from, cadmium nickel.
Background technology:
With the immediate prior art of the application be the ZL99221860.8 utility model patent " no circulation is also transported the complete direct current cabinet of lead-free battery " of the application designer design.Before patent circuit structure as shown in Figure 1, it is to be provided with a dc bus M+ in the direct current cabinet circuit, floating charge bus FM and one discharge and recharge bus CFM.No. 1 charger connects the floating charge bus by switch, No. 2 charger is connected to the floating charge bus respectively and discharges and recharges bus by bidirectional switch, be connected to the cathode terminal of two groups of each automatic Regulation silicon chains that are composed in series by 50 diodes respectively at M+ dc bus one end, storage battery 1XDC, 2XDC are connected to anti-circulating device diode D respectively by on-off switch 1K and 3K 1, D 3Positive pole and D 2, D 4Anodal and discharge and recharge bus CFM.Should be provided with two groups of anti-circulation channels by anti-circulating device, form by two diodes for every group.One group of diode D wherein 1, D 2Negative electrode and connect after connect anode with two groups of pressure regulation silicon chains respectively, its anode meets storage battery 1XD and 2XDC respectively, this is discharge of two group storage battery accidents and the shared anti-circulation channel of floating charge instantaneous discharge.Second group of diode D 3, D 4Anode is connected to floating charge bus FM, and negative electrode is connected to storage battery 1XDC and 2XDC respectively, and this is the special-purpose anti-circulation channel of floating current.This patented technology has realized that two group storage batteries do not have the circulation parallel running, eliminated the major hidden danger of circulation, removed the reliability and the very low problem of life-span of single current DC screen, than the reliability height of the full capacity single supply direct current cabinet of two groups and usefulness, and cost reduces half.Full-automatic, high power capacity retention value, high life have been realized, wide-voltage-regulation technical indicator, high-quality voltage in the time of satisfying electric power system alternating current and have a power failure, the demand of the DC power supply of high reliability.But its deficiency is arranged also.When especially adopting in high-power station, during floating charge often when dc load and accident the accident dc load all very big, up to tens of peaces to hundreds of peaces.And all to strengthen the capacity of pressure regulation silicon chain by pressure regulation silicon chain, and increased the electric energy loss of pressure regulation silicon chain, also increased the operating cost of the cost of direct current cabinet greatly, return to install and make troubles.In addition, because the restriction of circuit theory can't realize the floating charge of efficiently pulsing, limited the further raising in battery capacity retention value and life-span.
Summary of the invention:
For solving the deficiency of technique scheme, a kind of new technical scheme is proposed, being implemented in two group storage batteries does not have under the condition of circulation parallel running, and the energy range of regulation is wide, reduces the pressure regulation loss, reduces equipment cost and operating cost; Realization further improves capacity retention value and the useful life and the reliability of storage battery to the floating charge of efficiently pulsing of all appearances of storage battery.
In the application's the technical scheme, comprise two dc buss, promptly a closing bus bar HM controls bus KM for one; Closing bus bar HM connects the load that closes a floodgate, emergency lighting load, DC start oil pump n 2, control bus KM connects signal load, control load n 1Article one, discharge and recharge bus CFM, a shared negative busbar M-, two group storage battery groups i.e. the first batteries 1XDC and the second batteries 2XDC, and two cover chargers i.e. the first charger 1CDJ and the second charger 2CDJ.
It is characterized in that also comprising in this direct current cabinet:
1, the anti-circulating device WTF of harmless automatic wide-voltage-regulation is set.This device has 7 diode D 1～D 7Form 4 passages, wherein the first diode D 1, the second diode D 2Form the anti-circulation channel of two group storage battery accidents electricity, the 3rd diode D 3, the 4th diode D 4Form two groups of electric power storage group B section batteries during floating charge 0.1 second to the anti-circulation channel of several seconds instantaneous discharge.The 5th diode D 5, the 6th diode D 6Form the anti-circulation channel of two group storage batteries floating charge often.Above-mentioned three passages have guaranteed the parallel running and do not have circulation under various operating states of two group storage batteries.Other the 7th diode D 7Be normal work period, control bus KM is to the passage of closing bus bar HM power supply.Because of often loading, closing bus bar HM approaches zero, so the voltage of two buses is near equating.
2, to be divided into A, B be n for two sections for the first batteries 1XDC and the second batteries 2XDC aAnd n b, have a tap between two sections of A, the B.A road of two electric power storage group positive poles link closing bus bar HM by the first diode D1 and the second diode D2 among the 11 pressure regulation contactor 11C, the anti-circulating device WTF respectively; The upper slitter 1 of the first double-pole dibit power condition switch 1K and the 3rd double-pole dibit power condition switch 3K is passed through on another road respectively #Contact connects and discharges and recharges bus CFM.
The following cutter 4 of the first double-pole dibit power condition switch 1K and the 3rd double-pole dibit power condition switch 3K is passed through in the tap of the first batteries 1XDC and the second batteries 2XDC respectively #Diode the 3rd diode D3 is connected control bus KM among contact and the anti-circulating device WTF with the 4th diode D4.
The first charger 1CDJ is the floating machine of the high frequency switch power formula of high-low power GM, DM combination, exports pure direct current of 230V and 24V pulsating dc voltage simultaneously by high power module GM and low power module DM; The pure direct voltage of 230V is connected control bus KM from the 7th output of high power module through the 5th switch 5K with the 8th diode D8; The pulsating direct current of output 254V after 24V pulsating dc voltage and the addition of 230V voltage is passed through anti-circulating device WTF the 5th diode D through the 5th switch 5K 5, the 6th diode D 6 Upper slitter 2 with the first double-pole dibit operating mode, the first switch 1K, the 3rd double-pole dibit power condition switch 3K #Contact connects two batteries " just " utmost point respectively, separately to the battery pack floating charge of pulsing.
In this programme, the n+1 design routinely of high power module, n represents the number of modules that just in time satisfies normal duty and floating current requirements, and the 1st, represent Hot Spare spare module number.Press the 7+1 design in this example, totally 8 high power modules.
The second charger 2CDJ is the dual-purpose machine of floating charge, the pure direct current of output 230V and the pulsating direct current pressure limiting constant current of 280V.The pure direct current of 230V its 5th output point of stand-by power supply during as the first charger 1CDJ fault is through the 9th diode D9 and the 4th contactor 4C access control bus KM; Another Lu Jingdi three contactor 3C insert and discharge and recharge bus CFM, when the first double-pole dibit power condition switch 1K or the 3rd double-pole dibit power condition switch 3K put 1 #During contact, the second contactor 2C junction closure, the pulsating direct current of 280V is to battery charging.
4, " bearing " utmost point of the first charger 1CDJ, the second charger 2CDJ, the first batteries 1XDC, the second batteries 2XDC meets common negative busbar M-through separately switch respectively and forms the loop.
5, between closing bus bar HM and control bus KM, be connected with the 12 pressure regulation tentaculum 12C, accident regulating resistor Rt and passage the 7th diode D7 often.
6, the positive and negative electrode of two group storage batteries and tap are connected to the first voltage equalizer 1JYJ and the second voltage equalizer 2JYJ respectively.First, second voltage equalizer is by the triode G and the first biasing resistor R 1The second biasing resistor R 2And current-limiting resistance R 3Form.R 1, R 2Be connected to respectively the battery pack both positive and negative polarity and and triode G base stage connection, the triode emitter-base bandgap grading meets the intersegmental tap of battery pack A, B two, current-limiting resistance R 3Be connected to collector electrode and the battery pack A section positive pole of triode G.
The application's good effect:
1, the float charge voltage of batteries is high nearlyer 11% than dc bus working voltage, has enough pressure regulation abilities.Battery pack has a tap voltage to equate with DC bus-bar voltage, communicates with dc bus through anti-circulating device, makes dc bus have the reserve power supply that voltage equates.Adopt the high frequency switch power of two kinds of module combinations again because of floating machine, export pure direct voltage direct-furnish control bus and combined floodgate dc bus, the output ripple direct current is to the storage battery floating charge, this has just eliminated the pressure regulation silicon chain and the loss in the silicon chain of often loading thereof expensive between storage battery and dc bus, reduce cost, reduce operating cost, realized harmless wide-voltage-regulation and efficient pulsation floating charge; Charger high efficiency, low noise, high voltage stability have also been realized simultaneously.
2, because the anti-circulating device WTF that adopts 7 diodes to form has floating charge, floating charge discharge, accident discharge.Article three, anti-circulation channel has been realized under the preceding topic of harmless wide-voltage-regulation, and two group storage batteries can both not have circulation and fortune in various running statuses, thoroughly eliminate the harm of circulation.
3, normally in service, the tap of two group storage batteries provides reliable instantaneous power supply and reserve power supply to dc bus, has protected the floating machine overload, has improved DC bus powered reliability greatly.This programme also adopts two JYJ voltage equalizers can carry out the voltage capacity equilibrium timely automatically, having solved for many years the direct current cabinet of magnetic tape trailer battery wants to solve and the insurmountable very low key problem of the life of storage battery that causes, improve battery capacity retention value and useful life, realized all holding harmless wide-voltage-regulation.
4, the low power module of floating machine output ripple direct current is pressed the 1+1 design, i.e. work, and a Hot Spare is standby, and each piece can both be born the whole floating charge loads of storage battery.Therefore not only solved and to have solved efficient pulsation floating charge for a long time, but also solved highly reliable pulsation float charger, the capacity retention value and the life-span of storage battery are further improved.
DC bus powered very reliable when 5, normally moving.It has suitable 4 normal power supply power supplys, and just often by 7 module for power supply of the first charger 1CDJ, a module Hot Spare is standby.So when a module failure, another module drops into automatically, this is equivalent to the automatic input of first power supply.When the first charger 1CDJ fault, the second charger 2CDJ drops into automatically, and this is equivalent to the automatic input of second power supply.When two charger simultaneous faultss or when exchange having a power failure, two batteries B sections drop into power supply automatically, and this is equivalent to the 3rd, fourth power, so the reliability height of power supply, power supply quality is good.
6, accident power supply reliability height, quality of voltage is excellent
Exchange first wink of dead electricity, have two group storage battery B sections the 3rd, the 4th diode in anti-circulating device and to power to closing bus bar through the 7th diode again, make various loads in time obtain power supply to the control bussed supply.Exchanging about 0.5～1 second battery tension of dead electricity descended nearly 5% o'clock, the 11 contactor 11C closure, the total head of two group storage batteries first, second diode in anti-circulating device is powered to closing bus bar, again through regulating resistor Rt step-down 5% to control bussed supply, through several minutes, the 12 tentaculum closure when battery tension drops near the normal working voltage of dc bus, control bus and closing bus bar voltage equate.Because the number of elements of storage battery is many, the float charge voltage height, in the latter stage of accident discharge in a hour, DC bus-bar voltage drops to and is not less than 95%, thereby guaranteed that two dc buss high-quality during one hour alternating current accident reliably powers, realized all holding harmless wide-voltage-regulation, when alternating current recovers, original state when the 11 contactor and the 12 contactor automatic disconnection recover.
7, when the first double-pole dibit power condition switch 1K or the 3rd double-pole dibit power condition switch 3K put charge position, single group storage battery can carry out initial charge, and bulk charge replenishes electricity, activation charging or activation discharge.Because the effect of the first and the 3rd double-pole dibit power condition switch and the 12 contactor, dc bus neither produces overvoltage in all cases, does not also produce decompression and under-voltage, has realized high-quality reliable power supply.
Description of drawings:
Fig. 1 is the circuit diagram of prior art, and Fig. 2, Fig. 3 are the circuit diagrams of present techniques scheme, and wherein Fig. 2 is that the direct current cabinet with the 220V system is the line map of example, and Fig. 3 is the circuit diagram of voltage equalizer JYJ among Fig. 2.
Embodiment:
During concrete enforcement as described in the technical scheme in the above-mentioned summary of the invention.In order fully to understand the technical program, now operation principle of the present invention is described below according to Fig. 2, Fig. 3: when the first double-pole dibit power condition switch 1K or the 3rd double-pole dibit power condition switch 3K put " floating charge " position the 2nd contact, the 5th diode D of the anti-circulation channel of floating charge often 5, the second hexode D 6Open-minded, to the floating charge of pulsing of two group storage batteries, instantaneous floating charge discharge channel the 3rd diode D simultaneously 3, the 4th diode D 4Open-minded, two batteries B sections and control bus KM are connected, for B section instantaneous discharge and reserve discharge provide path.When the first double-pole dibit power condition switch 1K or the 3rd double-pole dibit power condition switch 3K put 1 #During contact, then this Battery pack is connected with discharging and recharging bus CFM, carries out various chargings and activation discharge.When floating charge or charging,,, do not control bus KM, closing bus bar HM overvoltage so can not cause because the following cutter of the 11 pressure regulation contactor 11C and power condition switch disconnects though battery voltage is higher than closing bus bar HM and control line KM.The 11 pressure regulation contactor 11C voltage adds closing bus bar from falling about 5% back when running into the interchange power outage, and connected the control bus, assurance accident interdischarge interval control bus KM and the automatic wide-voltage-regulation quality supply of closing bus bar HM after by the pressure regulation of tentaculum 12C contact through accident regulating resistor Rt, pressure regulation.
The 7th diode D among the anti-circulation channel WTF 7Effect be when normal floating charge, to guarantee that control bus KM is to the female HM power supply of closing line.
Adopted by the module combinations of high and low power and " height " frequently behind the floating machine of switch power supply type, by the pure direct current direct-furnish control of high power module GM output 230V bus KM, the 24V pulsating direct current of low power module DM output again with the pure direct current addition of 230V of high power module GM output after the 254V pulsating direct current, the 5th diode D in anti-circulating device WTF 5, the 6th diode D 6To the two group storage batteries floating charge of pulsing.
Such scheme has thoroughly been eliminated pressure regulation silicon chain and the loss in pressure regulation silicon chain of often loading, and has realized harmless wide-voltage-regulation and pulsation floating charge, has improved storage battery floating charge and DC bus powered reliability simultaneously.
The first and second battery component A, B are two sections in scheme, and two sections function is: the A section is the pressure regulation section, the battery number of elements is by after satisfying accident discharge in a hour, and DC bus-bar voltage drops to and is not less than 95% and chooses.The B section is a main paragraph, the battery number of elements during by normal floating charge B section voltage equal to control the bus operating voltage and choose.The B section is born instantaneous power supply task.Because of voltage after the instantaneous discharge might descend, in order to make the equilibrium of single cell voltage capacity during floating charge at the same time of two sections battery pack, two Battery packs respectively are provided with the first voltage equalizer 1JYJ and the second voltage equalizer 2JYJ.Its circuit diagram is shown in 3.Just often the voltage of each monocell is identical in the batteries, base stage and the emitter of corresponding triode G equate with the control busbar voltage, not conducting of triode G, after B section voltage instantaneous discharge descends, not conducting of triode G, to the boost charge of battery pack B section, when voltage rises to emitter-base bandgap grading, base voltage and equates, then stop boost charge automatically to B section battery pack, guaranteed the equilibrium of single cell voltage capacity of whole Battery pack, should " all hold " is the capacity retention value of battery in this programme and the most important measure that improves useful life.
Below to being that the design parameter of example is described as follows with 220V system direct current cabinet:
1, in the two group storage battery groups every group press 1000AH design, 11 on A section pressure regulation section battery, voltage 2.23 * 11=14V, 103 on B section main paragraph battery, voltage 2.23 * 103=230V, 114 of every Battery packs.
2, the high power module of the first floating machine 1CDJ is selected 10A-SDC230V/380V for use, and totally 8,7 work, 1 Hot Spare.
3, triode G selects 100mA/60V comprehensive silicon triode for use in the voltage equalizer, and direct current multiplication factor β=2000 are by equal capacitance current 50-80mA design, the first biasing resistor R 1=12K Ω 0.25W, the second biasing resistor R 2=115 Ω/1W, the 3rd biasing resistor R 3=270 Ω/3W.
The resistance of the also available 470 Ω/3W of this voltage equalizer replaces, and the two ends of inserting battery pack A get final product.

Claims (1)

1.一种无损宽调压脉动浮充蓄电池直流屏，它包括一条合闸母线(HM)，合闸母线(HM)连接合闸负荷、事故照明负荷、直流起动油泵；一条控制母线(KM)，控制母线(KM)连接信号负荷，控制负荷；一条充放电母线(CFM)，一条共用的负母线(M-)；第一蓄电池组(1XDC)和第二蓄电池组(2XDC)；第一充电机(1CDJ)和第二充电机(2CDJ)，其中第一蓄电池组(1XDC)和第二蓄电池组(2XDC)各分为A、B两段，A、B两段之间带有一个抽头；其特征是该直流屏还包括：1. A non-destructive wide voltage regulation pulsating floating charge battery DC screen, which includes a closing bus (HM), which is connected to closing loads, emergency lighting loads, and DC starting oil pumps; a control bus (KM) , the control bus (KM) is connected to the signal load and the control load; a charging and discharging bus (CFM), a common negative bus (M-); the first battery pack (1XDC) and the second battery pack (2XDC); the first charging Charger (1CDJ) and second charger (2CDJ), wherein the first storage battery pack (1XDC) and the second storage battery pack (2XDC) are divided into two sections A and B respectively, and there is a tap between the two sections A and B; It is characterized in that the DC screen also includes: 设置无损自动宽调压防环流装置(WTF)，该装置有7只二极管(D1-D7)组成4条通道；其中第一个二极管(D1)和第二个二极管(D2)组成两组蓄电池组事故放电防环流通道，第三个二极管(D3)和第四个二极管(D4)组成两组蓄电池组B段电池在浮充期间瞬时放电防环流通道，第五个二极管(D5)和第六个二极管(D6)组成两组蓄电池组常时浮充防环流通道；另外第七个二极管(D7)组成正常工作期间控制母线(KM)向合闸母线(HM)供电的通道；Set the non-destructive automatic wide voltage regulation anti-circulation device (WTF), which has 7 diodes (D 1 -D 7 ) to form 4 channels; the first diode (D 1 ) and the second diode (D 2 ) are composed of The anti-circulation channels for accidental discharge of two sets of battery packs, the third diode (D 3 ) and the fourth diode (D 4 ) form two sets of anti-circulation channels for the instantaneous discharge of batteries in section B of the battery pack during float charging, and the fifth diode ( D 5 ) and the sixth diode (D 6 ) form two groups of battery packs for constant floating charge anti-circulation channels; in addition, the seventh diode (D 7 ) forms the control bus (KM) to the closing bus (HM) during normal operation power supply channel; 第一蓄电池组和第二蓄电池组的正极的一路经由第十一调压接触器(11C)且然后分别通过第一个二极管(D1)和第二个二极管(D2)连接合闸母线(HM)；另一路分别通过第一双刀双位工况开关(1K)和第三双刀双位工况开关(3K)的上刀1号接点连接充放电母线(CFM)；The positive poles of the first battery pack and the second battery pack are connected to the closing busbar ( HM); the other way is respectively connected to the charging and discharging busbar (CFM) through the No. 1 contact of the upper knife of the first double-pole double-position working condition switch (1K) and the third double-pole double-position working condition switch (3K); 第一蓄电池组(1XDC)的抽头通过第一双刀双位工况开关(1K)的4号接点和第三个二极管(D3)连接控制母线(KM)，以及第二蓄电池组(2XDC)的抽头通过第三双刀双位工况开关(3K)的4号接点和第四个二极管(D4)连接至控制母线(KM)；The tap of the first battery pack (1XDC) is connected to the control bus (KM) through the No. 4 contact of the first double-pole double-position switch (1K) and the third diode (D 3 ), and the second battery pack (2XDC) The tap of the switch is connected to the control bus (KM) through the No. 4 contact of the third double-pole double-position working condition switch (3K) and the fourth diode (D 4 ); 第一充电机(1CDJ)是高、低功率模块组合的高频开关电源式的浮充机，高功率模块输出满足控制母线的纯直流电压，并通过第一充电机的第7输出端以及第五开关(5K)和第八个二极管(D8)连接控制母线(KM)；高功率模块与低功率模块的输出电压相加后从而输出满足向蓄电池充电的脉动直流，并经第一充电机的第5输出端通过第五个二极管(D5)和第一双刀双位工况开关(1K)的2号接点连接第一蓄电池组的正极，以及经第一充电机的第5输出端通过第六个二极管(D6)和第三双刀双位工况开关(3K)的2号接点连接第二蓄电池组的正极；The first charger (1CDJ) is a high-frequency switching power supply floating charger combined with high-power and low-power modules. The five switches (5K) and the eighth diode (D 8 ) are connected to the control bus (KM); the output voltages of the high-power module and the low-power module are added to output a pulsating DC that meets the charging requirements for the storage battery, and are passed through the first charger The 5th output terminal of the battery is connected to the positive pole of the first storage battery through the fifth diode (D 5 ) and the 2nd contact of the first double-pole double-position switch (1K), and the 5th output terminal of the first charger Connect the positive pole of the second battery pack through the sixth diode (D 6 ) and the No. 2 contact of the third double-pole double-position switch (3K); 第二充电机(2CDJ)是浮充充电两用机，一是输出满足控制母线电压的纯直流，其第5输出端经第九个二极管(D9)和第四接触器(4C)接入控制母线(KM)；二是输出满足充电电压值的脉动直流，该脉动直流经第三接触器(3C)接入充放电母线(CFM)，当第一双刀双位工况开关(1K)或第三双刀双位工况开关(3K)置于1号接点，且与第二充电机的第一端子、第二端子和第三端子连接的第二接触器(2C)的接点闭合时，向蓄电池组充电；The second charger (2CDJ) is a dual-purpose machine for floating charging, one is to output pure DC that meets the control bus voltage, and its fifth output terminal is connected through the ninth diode (D 9 ) and the fourth contactor (4C) Control bus (KM); the second is to output pulsating DC that meets the charging voltage value, and the pulsating DC is connected to the charging and discharging bus (CFM) through the third contactor (3C). Or when the third double-pole double-position working condition switch (3K) is placed on the No. 1 contact, and the contact of the second contactor (2C) connected to the first terminal, the second terminal and the third terminal of the second charger is closed , to charge the battery pack; 第一充电机(1CDJ)、第二充电机(2CDJ)、第一蓄电池组(1XDC)、第二蓄电池组(2XDC)的负极分别经各自的开关接入共同负母线(M-)形成回路：The negative poles of the first charger (1CDJ), the second charger (2CDJ), the first battery pack (1XDC) and the second battery pack (2XDC) are respectively connected to the common negative busbar (M-) through their respective switches to form a circuit: 在合闸母线(HM)和控制母线(KM)之间并联连接有合闸母线(HM)向控制母线(KM)供电的第十二调压接触器(12C)和事故调压电阻(Rt)；Between the closing bus (HM) and the control bus (KM), the twelfth voltage-regulating contactor (12C) and the emergency voltage-regulating resistor (Rt) connected in parallel between the closing bus (HM) and the control bus (KM) are connected ; 第一、第二蓄电池组的正、负极和抽头分别联接到第一电压均衡器(1JYJ)和第二电压均衡器(2JYJ)；第一、第二电压均衡器的构造均由三极管(G)和第一偏置电阻(R1)、第二偏置电阻(R2)及限流电阻(R3)组成；第一偏置电阻(R1)、第二偏置电阻(R2)一端分别接于蓄电池组正负极，第一偏置电阻(R1)和第二偏置电阻(R2)的另一端彼此连接且和三极管(G)基极接通，三极管射极接电池组A、B两段之间的抽头，限流电阻(R3)接于三极管(G)集电极和电池组A段正极；第一、第二电压均衡器也可用一只电阻接入电池组A段(na)两端替代。The positive and negative poles and taps of the first and second battery packs are respectively connected to the first voltage equalizer (1JYJ) and the second voltage equalizer (2JYJ); the structures of the first and second voltage equalizers are composed of transistors (G) Composed of the first bias resistor (R 1 ), the second bias resistor (R 2 ) and the current limiting resistor (R 3 ); one end of the first bias resistor (R 1 ) and the second bias resistor (R 2 ) Connect to the positive and negative poles of the battery pack respectively, the other end of the first bias resistor (R 1 ) and the second bias resistor (R 2 ) are connected to each other and connected to the base of the triode (G), and the emitter of the triode is connected to the battery pack The tap between sections A and B, the current limiting resistor (R 3 ) is connected to the collector of the triode (G) and the positive pole of section A of the battery pack; the first and second voltage equalizers can also be connected to the battery pack A with one resistor Segment (n a ) is replaced at both ends.
CNB031119077A 2003-02-26 2003-02-26 Non-destructive wide voltage regulation pulsating floating charge battery complete set of DC screen Expired - Fee Related CN100367626C (en)

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CN2605690Y (en) * 2003-02-26 2004-03-03 孙海裕 Lossless wide-voltage-regulating pulse floating-charging accumulator complete direct current screen
CN102074986A (en) * 2010-12-29 2011-05-25 河北创科电子科技有限公司 Electric power single-group storage battery DC system and storage battery discharging method
CN102208832A (en) * 2011-06-03 2011-10-05 四川省电力公司广元电业局 Two-section DC operating power system
CN112421762B (en) * 2020-11-28 2022-07-29 国家电网有限公司 Battery Redundancy Control System for Electric Low Voltage DC System
CN114884167B (en) * 2022-05-13 2023-06-02 国网湖北省电力有限公司宜昌供电公司 Transformer substation direct-current control system based on lithium iron phosphate storage battery

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CN2605690Y (en) * 2003-02-26 2004-03-03 孙海裕 Lossless wide-voltage-regulating pulse floating-charging accumulator complete direct current screen

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US4363975A (en) * 1980-05-30 1982-12-14 Saskatchewan Power Corporation Direct current power supply
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CN2605690Y (en) * 2003-02-26 2004-03-03 孙海裕 Lossless wide-voltage-regulating pulse floating-charging accumulator complete direct current screen

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