CN2049428U - Cd-ni cell type dc power supply unit - Google Patents
Cd-ni cell type dc power supply unit Download PDFInfo
- Publication number
- CN2049428U CN2049428U CN 89212344 CN89212344U CN2049428U CN 2049428 U CN2049428 U CN 2049428U CN 89212344 CN89212344 CN 89212344 CN 89212344 U CN89212344 U CN 89212344U CN 2049428 U CN2049428 U CN 2049428U
- Authority
- CN
- China
- Prior art keywords
- floating charge
- cell group
- ickel
- cadmium cell
- charge motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a Cd-Ni cell type dc power supply device, which is characterized in that a Cd-Ni cell group (III) is composed of a main cell group E-[1] and a subsidiary cell group E-[2]; when the Cd-Ni cell type dc power supply device is at the normal running, a main floating charge machine (I) makes the floating charge for the main cell group E-[1], and a subsidiary floating charge machine (II) makes the floating charge for the cell group E-[2]; when an alternating current power supply or the main floating charge machine (I) has a fault, the main cell group E-[1] supplies electricity for a dc screen; when the dc busbar voltage decreases to the specified value, the subsidiary cell group E-[2] and the main cell group E-[1] are connected in series to together supply the electricity for the dc screen under the control of a self-throwing device (V). The device has simple structure, little self power consumption, long service life of Cd-Ni, high safety and reliability, and the Cd-Ni cell type dc power supply device is suitable for use of large and middle power plants, substations and other organizations.
Description
The utility model relates to a kind of ickel-cadmium cell formula continuous-current plant.This device is used for the occasion that power plant and electric substation etc. need direct current supply.
In the past, mostly use lead-acid battery formula continuous-current plant in the electric power system.Owing to lead-acid battery weak point in useful life, etching apparatus, jeopardize health and safeguard complexity, in recent years, people brought into use ickel-cadmium cell formula continuous-current plant.Present ickel-cadmium cell formula continuous-current plant, owing to use traditional silicon stack or silicon chain step-down floating charge mode to move, thereby self power consumption is generated heat greatly, for a long time and is had the multiple spot potential faults.Therefore this is ickel-cadmium cell formula continuous-current plant urgency technical problem to be solved in applying.
The purpose of this utility model is to provide a kind of novel, simple in structure, self little power consumption and safe and reliable ickel-cadmium cell formula continuous-current plant to satisfy the requirement of big capacity, ultrahigh voltage power user in the electric power system.
Technical solution of the present utility model is: on the basis of present ickel-cadmium cell formula continuous-current plant, get rid of the floating charge operational mode of silicon stack or the step-down of silicon chain, master battery pack E is set in the ickel-cadmium cell group
1With secondary cell group E
2, set up a secondary floating charge motor (II) and an automatic bus (V).During normal the operation, master battery pack E
1By main floating charge motor (I) floating charge, secondary cell group E
2By secondary floating charge motor (II) floating charge.When AC power or main floating charge motor (I) when breaking down by master battery pack E
1At first power to direct current cabinet.When DC bus-bar voltage drops to setting, secondary cell group E under the control of automatic bus (V)
2With master battery pack E
1Connect and power to direct current cabinet jointly.
Below in conjunction with accompanying drawing the utility model is described in detail.
Accompanying drawing 1 is a configuration diagram of the present utility model.
Accompanying drawing 2 is the electrical schematic diagram of secondary floating charge motor (II) in the utility model.
Referring to Fig. 1, the utility model comprises direct current cabinet, main floating charge motor (I), ickel-cadmium cell group (III) and the charger of being made up of negative dc bus N and positive direct-current bus P (IV).Charger (IV) passes through K switch
4Link to each other with ickel-cadmium cell group (III).Main floating charge motor (I) passes through K switch
1Link to each other with direct current cabinet.Ickel-cadmium cell group (III) is passed through K switch
3Link to each other with direct current cabinet.
Technical characterictic of the present utility model is that described ickel-cadmium cell group (III) is by master battery pack E
1With secondary cell group E
2Form master battery pack E
1Negative pole and secondary cell group E
2Positive pole link to each other; A secondary floating charge motor (II) and an automatic bus (V) are set in addition; During normal the operation, master battery pack E
1By main floating charge motor (I) floating charge, secondary cell group E
2By secondary floating charge motor (II) floating charge; When AC power or main floating charge motor (I) when breaking down, master battery pack E
1At first power to direct current cabinet; When DC bus-bar voltage drops to setting, secondary cell group E
2Under the control of automatic bus (V) with master battery pack E
1Connect and power to direct current cabinet jointly.Automatic bus (V) is by relay 1J and 2J, and D.C. contactor 1C and 2C form.Series arm, D.C. contactor 1C coil and 2C that the series arm that relay 2J coil and 1J normally closed contact are formed, D.C. contactor 2C coil and 2J normal opened contact are formed
1Be connected on dc bus P, the N after the mutual parallel connection of series arm that normal opened contact is formed; DC bus-bar voltage just often, relay 1J work disconnects its normally closed contact 1J; The normally closed contact 2C of D.C. contactor 2C
2D is in parallel with diode, and it passes through K switch with the anodal end that links to each other of diode D
3Negative dc bus N links to each other with direct current cabinet, and it is connected main battery E with the end that diode D negative pole links to each other
1Negative pole and auxiliary connection battery pack E
2Positive pole; The normally closed contact 1C of D.C. contactor 1C
4Be connected among the negative pole circuit of secondary floating charge motor (II) its normal opened contact 1C
3Be connected on secondary cell group E
2Negative pole and diode D positive terminal between.The positive pole of secondary floating charge motor (II) passes through K switch
2Link to each other with the negative dc bus N of direct current cabinet, its negative pole is by the normally closed contact 1C of D.C. contactor 1C
4And K switch
2With secondary cell group E
2Negative pole link to each other.Secondary cell group E
2Negative pole pass through K switch
4Link to each other with the negative pole of charger (IV).Master battery pack E
1Positive pole pass through K switch
4Link to each other with the positive pole of charger (IV) and pass through K switch
3Link to each other with the positive direct-current bus P of direct current cabinet.For ease of charging, the discharge capacity of monitoring ickel-cadmium cell group (III), serial connection shunt F in the cathode circuit of ickel-cadmium cell group (III)
L, at shunt F
LTwo ends connect a JAH-1G type ampere-hour meter AH, the power line of ampere-hour meter connects the 220V AC power, during AC interruptions by small-sized ickel-cadmium cell as the ampere-hour meter working power.For improving fail safe of the present utility model and reliability, the negative dc bus N of direct current cabinet and positive direct-current bus P adopt have withstand voltage, insulation, protection against the tide and the good insulated copper wire of fire resistance.For monitoring the ruuning situation of this device, the normally closed contact 1C by D.C. contactor 1C in parallel between a point in automatic bus (V) and the b point
2Whether the series arm of forming with white signal lamp BD is normal to monitor secondary floating charge motor (II) working condition and DC bus-bar voltage.Automatic bus when DC bus-bar voltage drops to setting (V) work, secondary cell group E
2Automatically input powered operation, white signal lamp BD extinguish.
Referring to Fig. 2, the secondary floating charge motor (II) described in the utility model is made up of rectification circuit, electronic regulation circuit and electronics current stabilization circuit.By transformer B, diode D
1～D
4And capacitor C
1Form bridge rectifier; By adjusting pipe BG
1With BG
2, resistance R
1, R
2With R
3, potentiometer W
1With comparison amplifier tube BG
4Form the electronic regulation circuit; The electronics current stabilization circuit comprises one by sample resistance R
Z, resistance R
4, R
5With R
6With in-phase proportion amplifier F
1The first order in-phase proportion amplifying circuit that constitutes; One by potentiometer W
2, resistance R
7, R
8, R
9With R
10, in-phase proportion amplifier F
2The second level in-phase proportion amplifying circuit that constitutes; One by voltage-stabiliser tube Wy, resistance R
11With R
12, capacitor C
4With transistor BG
3The amplifying circuit of forming; One by resistance R
1, adjust pipe BG
1With BG
2The adjustment circuit of forming.Regulator potentiometer W
1Can adjust the height of secondary floating charge motor (II) input voltage.Regulator potentiometer W
2Can adjust the size of secondary floating charge motor (II) output current.
When secondary floating charge motor (II) output voltage raises, BG
4Base potential raise and cause adjusting pipe BG
1Collector electrode and emitter between voltage rise, the output voltage of secondary floating charge motor this moment (II) keeps stable thereupon descending.When secondary floating charge motor (II) output voltage reduces, BG
4Base potential descend and cause adjusting pipe BG
1Collector electrode and emitter between voltage descend, the output voltage of secondary floating charge motor this moment (II) keeps stable thereupon rising.
Brief description operation principle of the present utility model and process.Referring to Fig. 1, when the utility model put into operation, K at first closed a switch
4, charger (IV) passes through K switch
4To ickel-cadmium cell group (III) charging, ampere-hour meter AH shows that ickel-cadmium cell (III) charges into capacity.After charging finishes, the hand off K switch
4, K thereafter closes a switch
1, K
2, K
3, main floating charge motor (I) is to the direct current cabinet power supply and pass through K switch
1, direct current cabinet, K switch
3Normally closed contact 2C with D.C. contactor 2C
2To the master battery pack E in the ickel-cadmium cell group (III)
1Floating charge.Meanwhile, the secondary cell group E of secondary floating charge motor (II) in ickel-cadmium cell group (III)
2Floating charge.Secondary floating charge motor (II) is to secondary cell group E
2The floating charge loop be: floating current from the anodal starting flow of secondary floating charge motor (II) through K switch
2, direct current cabinet negative busbar N, K switch
3Contact 2C normally closed contact 2C with diode D(or direct current
2) arrival secondary cell group E
2Positive pole, thereafter from secondary cell group E
2Negative pole flow out, pass through K switch
2And the normally closed contact 1C of D.C. contactor 1C
4Get back to the negative pole of floating charge motor (II).
When AC power or main floating charge motor (I) when breaking down, the master battery pack E in the ickel-cadmium cell group (III)
1Pass through K switch
3Power to direct current cabinet.When DC bus-bar voltage dropped to setting, the relay 1J normally closed contact 1J in the automatic bus (V) connected, and relay 2J coil is charged, its normal opened contact 2J connects the normal opened contact 2C of D.C. contactor 2C
1Connect normally closed contact 2C
2Cut off master battery pack E
1Negative loop.Because normal opened contact 2C
1Connection make that D.C. contactor 1C coil is charged, its normally closed contact 1C
2Cut off white signal lamp loop, white lamp BD extinguishes.Normally closed contact 1C
4Cut off secondary floating charge motor (II) current supply circuit, normally closed contact 1C
1Connect the red eye loop, 1C
3Normal opened contact is connected secondary cell group E
2Negative pole and K switch
3The loop.This moment secondary cell group E
2With master battery pack E
1The series connection and through K switch
3To direct current cabinet power supply, the bright vice battery pack of red eye HD E
2Drop into powered operation.
The utility model has the advantage of: owing in cadmium nickel-based battery group (III), adopt secondary cell group E2Move mode to get rid of traditional silicon stack step-down floating charging, thereby overcome the defective of at present domestic and international cadmium nickel-based battery formula dc source device. The utility model is simple in structure, self little power consumption, safe and reliable, comprehensive cost and lead-acid battery are basic identical, but it is compared with the lead-acid battery that adopts with the capacity unit at present, capacity reduces half, long service life is more than one times, simultaneously can maintenance cost saving 60% and reduce the power failure economic loss of bringing because changing lead-acid battery. Compare with the cadmium nickel-based battery formula dc source device that present introduction is external, take 200,000 kilowatts of frequent load currents of unit as 100A, a year operation calculated in 6500 hours, but every year saves energy 20,000 degree.
The utility model is applicable to that the units such as big-and-middle-sized power plant, electric substation need the occasion of direct current supply.
Claims (5)
1, a kind of ickel-cadmium cell formula continuous-current plant, it includes direct current cabinet, charger (IV), main floating charge motor (I) and the ickel-cadmium cell group (III) of dc bus, it is characterized in that it has a secondary floating charge motor (II) and an automatic bus (V); Described ickel-cadmium cell group (III) is by master battery pack E
1With secondary cell group E
2Form; During normal the operation, master battery pack E
1By main floating charge motor (I) floating charge, secondary cell group E
2By secondary floating charge motor (II) floating charge; When AC power or main floating charge motor (I) when breaking down, by master battery pack E
1Power to direct current cabinet; When DC bus-bar voltage drops to setting, secondary cell group E
2Under the control of automatic bus (V) with master battery pack E
1Connect and power to direct current cabinet jointly.
2, ickel-cadmium cell formula continuous-current plant according to claim 1 is characterized in that serial connection shunt F in the cathode circuit of described ickel-cadmium cell group (III)
L, shunt F
LTwo ends connect ampere-hour meter AH.
3, ickel-cadmium cell formula continuous-current plant according to claim 1 and 2, the dc bus that it is characterized in that described direct current cabinet are withstand voltage, insulation, protection against the tide and the good insulated copper wire of fire resistance.
4, ickel-cadmium cell formula continuous-current plant according to claim 1 and 2 is characterized in that described secondary floating charge motor (II) is made up of rectification circuit, electronic regulation circuit and electronics current stabilization circuit.
5, ickel-cadmium cell formula continuous-current plant according to claim 3 is characterized in that described secondary floating charge motor (II) is made up of rectification circuit, electronic regulation circuit and electronics current stabilization circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212344 CN2049428U (en) | 1989-04-10 | 1989-04-10 | Cd-ni cell type dc power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212344 CN2049428U (en) | 1989-04-10 | 1989-04-10 | Cd-ni cell type dc power supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2049428U true CN2049428U (en) | 1989-12-13 |
Family
ID=4868503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89212344 Withdrawn CN2049428U (en) | 1989-04-10 | 1989-04-10 | Cd-ni cell type dc power supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2049428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841186A (en) * | 2010-04-28 | 2010-09-22 | 四川省电力公司广安电业局 | Automatic backup silicon chain switching device for direct-current system |
| CN102832659A (en) * | 2012-07-06 | 2012-12-19 | 成都信息工程学院 | Stability control technology for output voltage of series storage battery under impact load |
-
1989
- 1989-04-10 CN CN 89212344 patent/CN2049428U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841186A (en) * | 2010-04-28 | 2010-09-22 | 四川省电力公司广安电业局 | Automatic backup silicon chain switching device for direct-current system |
| CN101841186B (en) * | 2010-04-28 | 2012-06-27 | 四川省电力公司广安电业局 | Automatic backup silicon chain switching device for direct-current system |
| CN102832659A (en) * | 2012-07-06 | 2012-12-19 | 成都信息工程学院 | Stability control technology for output voltage of series storage battery under impact load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |