CN116454851A - Controllable inter-group current suppression circuit for daily operation of storage battery pack and method thereof - Google Patents
Controllable inter-group current suppression circuit for daily operation of storage battery pack and method thereof Download PDFInfo
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- CN116454851A CN116454851A CN202310723041.2A CN202310723041A CN116454851A CN 116454851 A CN116454851 A CN 116454851A CN 202310723041 A CN202310723041 A CN 202310723041A CN 116454851 A CN116454851 A CN 116454851A
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- storage battery
- pin
- pole double
- battery pack
- current contactor
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001629 suppression Effects 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 53
- 230000005764 inhibitory process Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/108—Parallel operation of dc sources using diodes blocking reverse current flow
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Abstract
The invention relates to a controllable inter-group current suppression circuit for daily operation of storage battery packs and a method thereof, wherein the controllable inter-group current suppression circuit for daily operation of the storage battery packs is constructed, when a commercial power detection device detects a commercial power fault, in order to avoid the condition that one storage battery pack charges the other storage battery pack, a corresponding detection device controls a corresponding single-pole double-throw high-current contactor to act, a corresponding diode is connected into a corresponding storage battery pack loop, so that inter-current suppression of the corresponding storage battery pack loop is realized, the power supply capacity of a corresponding storage battery is ensured, the storage battery is protected, and the service life of the storage battery is prolonged.
Description
Technical Field
The invention belongs to the technical field of communication power sources of power communication stations, and particularly relates to a controllable inter-group current suppression circuit for daily operation of a storage battery and a method thereof.
Background
The communication power supply used in the communication machine room in the power industry generally adopts a method of hanging a storage battery pack down to ensure that the direct current power supply can still work normally when the mains supply is abnormal. For substations of 220kV and above, due to the fact that the load of a station end is large, a circuit topology structure of hanging two groups or even multiple groups of storage battery packs is adopted, when the commercial power fails, the two groups of storage battery packs supply power to the load at the same time, and normal operation of a system is guaranteed. The field operation and aging states of the two groups of storage battery packs cannot be completely consistent, so that the situation that one group of storage battery packs charges the other group of storage battery packs in the actual working process of the storage battery packs occurs, namely, the current among the storage battery packs occurs. The inter-group current can reduce the capacity of the storage battery pack with load, shorten the normal discharging time, and even have fire hazard due to overlarge inter-group current.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a controllable inter-group current suppression circuit and a method thereof for daily operation of a storage battery.
The invention solves the technical problems by adopting the following technical scheme:
the controllable inter-group current suppression circuit for daily operation of the storage battery is arranged in a communication power supply circuit of the power system, the output end of the suppression circuit is respectively connected with the positive poles of the storage battery 1 and the storage battery 2, the input end of the suppression circuit is connected with a positive bus of the communication power supply, the negative poles of the storage battery 1 and the storage battery 2 are connected with a negative bus of the communication power supply, and a load is connected between the positive bus and the negative bus of the communication power supply in parallel.
The suppression circuit comprises a commercial power detection device, a single-pole double-throw high-current contactor RLY1, a single-pole double-throw high-current contactor RLY2, a detection unit L1, a detection unit L2, a diode D1, a diode D2, a control device 1 and a control device 2, wherein a positive bus is respectively connected with the input end of the detection unit L1 and the input end of the detection unit L2, the detection unit L1 is connected with the control device 1, the detection unit L2 is connected with the control device 2, the control device 1 is connected with the control device 2 through the commercial power detection device,
the output end of the detection unit L1 is connected with a number 1 pin of a single-pole double-throw high-current contactor RLY1, the positive electrode of the diode D1 is connected with a number 3 pin of the single-pole double-throw high-current contactor RLY1, the negative electrode of the diode D1 is respectively connected with a number 4 pin of the single-pole double-throw high-current contactor RLY1 and the positive electrode of the storage battery 1, a number 2 pin and a number 5 pin of the single-pole double-throw high-current contactor RLY1 are respectively connected with the control device 1, the output end of the detection unit L2 is connected with a number 2 pin of the single-pole double-throw high-current contactor RLY2, the positive electrode of the diode D2 is connected with a number 3 pin of the single-pole double-throw high-current contactor RLY2, and the negative electrode of the diode D2 is respectively connected with a number 4 pin of the single-pole double-throw high-current contactor RLY2 and the positive electrode of the storage battery 1.
A control method of a controllable inter-group current suppression circuit for daily operation of a storage battery pack comprises a silence state and an operating state.
Moreover, the working process of the silence state comprises the following steps:
step 1.1, a No. 1 pin and a No. 4 pin of a single-pole double-throw high-current contactor RLY1 and a single-pole double-throw high-current contactor RLY2 are connected, a diode D1 and a diode D2 do not work, and a battery pack operates according to the standard working principle of a communication power supply system;
step 1.2, detection unit L1, detection unit L2, control device 1 and control device 2 detect battery pack 1 and battery pack 2 in real time.
Moreover, the working process of the working state comprises the following steps:
step 2.1, when a commercial power detection device detects a commercial power fault, and a detection unit L1 and a detection unit L2 monitor whether the flow between the storage battery pack 1 and the storage battery pack 2 exceeds a set threshold value, if yes, the step 2.2 is performed, otherwise, monitoring is continued;
step 2.2, if the inter-flow of the storage battery 1 exceeds a set threshold, the control device 1 sends an instruction to control the single-pole double-throw high-current contactor RLY1 to act, the No. 1 pin and the No. 3 pin of the single-pole double-throw high-current contactor RLY1 are connected, the diode D1 is connected into a current loop to realize inter-flow inhibition of the storage battery 1, if the inter-flow of the storage battery 2 exceeds the set threshold, the control device 2 sends an instruction to control the single-pole double-throw high-current contactor RLY2 to act, the No. 1 pin and the No. 3 pin of the single-pole double-throw high-current contactor RLY2 are connected, the diode D2 is connected into the current loop to realize inter-flow inhibition of the storage battery 2;
and 2.3, when the commercial power detection device detects that the commercial power is recovered, the control device corresponding to the fault sends out a silence state instruction, so that the No. 1 pin and the No. 4 pin of the corresponding single-pole double-throw high-current contactor RLY are connected, and the working process of the silence state is started.
The invention has the advantages and positive effects that:
when the commercial power detection device detects the commercial power failure, the invention controls the corresponding single-pole double-throw high-current contactor to act through the corresponding detection device in order not to cause the condition that one group of storage batteries charge the other group of storage batteries, and the corresponding diodes are connected into the corresponding storage battery loop, thereby realizing the inter-current inhibition of the corresponding storage battery loop, ensuring the power supply capacity of the corresponding storage batteries, protecting the storage batteries and prolonging the service life of the storage batteries.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The controllable inter-group current suppression circuit for daily operation of the storage battery pack is arranged in a communication power supply circuit of an electric power system as shown in fig. 1, the output end of the suppression circuit is respectively connected with the positive poles of the storage battery pack 1 and the storage battery pack 2, the input end of the suppression circuit is connected with a positive bus of the communication power supply, the negative poles of the storage battery pack 1 and the storage battery pack 2 are connected with a negative bus of the communication power supply, and a load is connected between the positive bus and the negative bus of the communication power supply in parallel.
The controllable inter-group current suppression circuit for daily operation of the storage battery comprises a commercial power detection device, a single-pole double-throw high-current contactor RLY1, a single-pole double-throw high-current contactor RLY2, a detection unit L1, a detection unit L2, a diode D1, a diode D2, a control device 1 and a control device 2, wherein a positive bus is respectively connected with the input end of the detection unit L1 and the input end of the detection unit L2, the detection unit L1 is connected with the control device 1, the detection unit L2 is connected with the control device 2, the control device 1 is connected with the control device 2 through the commercial power detection device,
the output end of the detection unit L1 is connected with a number 1 pin of a single-pole double-throw high-current contactor RLY1, the positive electrode of the diode D1 is connected with a number 3 pin of the single-pole double-throw high-current contactor RLY1, the negative electrode of the diode D1 is respectively connected with a number 4 pin of the single-pole double-throw high-current contactor RLY1 and the positive electrode of the storage battery 1, a number 2 pin and a number 5 pin of the single-pole double-throw high-current contactor RLY1 are respectively connected with the control device 1, the output end of the detection unit L2 is connected with a number 2 pin of the single-pole double-throw high-current contactor RLY2, the positive electrode of the diode D2 is connected with a number 3 pin of the single-pole double-throw high-current contactor RLY2, and the negative electrode of the diode D2 is respectively connected with a number 4 pin of the single-pole double-throw high-current contactor RLY2 and the positive electrode of the storage battery 1.
A control method of a controllable inter-group current suppression circuit for daily operation of a storage battery pack comprises a silence state and an operating state. The principle of the control method of the invention is as follows: when the commercial power fault is detected, the control device detects the battery current through the detection units L1 and L2, and when the inter-current suppression device is needed to be used, the control device sends out a signal to control the single-pole double-throw high-current contactor to realize the starting of the inter-current suppression circuit. The follow current device is added with a controllable switch, and the device is completely isolated when no inter-current inhibition is carried out, so that the static loss and the failure rate are reduced.
The working process of the silence state comprises the following steps:
step 1.1, a No. 1 pin and a No. 4 pin of a single-pole double-throw high-current contactor RLY1 and a single-pole double-throw high-current contactor RLY2 are connected, a diode D1 and a diode D2 do not work, and a battery pack operates according to the standard working principle of a communication power supply system;
step 1.2, detection unit L1, detection unit L2, control device 1 and control device 2 detect battery pack 1 and battery pack 2 in real time.
The working process of the working state comprises the following steps:
step 2.1, when a commercial power detection device detects a commercial power fault, and a detection unit L1 and a detection unit L2 monitor whether the flow between the storage battery pack 1 and the storage battery pack 2 exceeds a set threshold value, if yes, the step 2.2 is performed, otherwise, monitoring is continued;
step 2.2, if the inter-flow of the storage battery 1 exceeds a set threshold, the control device 1 sends an instruction to control the single-pole double-throw high-current contactor RLY1 to act, the No. 1 pin and the No. 3 pin of the single-pole double-throw high-current contactor RLY1 are connected, the diode D1 is connected into a current loop to realize inter-flow inhibition of the storage battery 1, if the inter-flow of the storage battery 2 exceeds the set threshold, the control device 2 sends an instruction to control the single-pole double-throw high-current contactor RLY2 to act, the No. 1 pin and the No. 3 pin of the single-pole double-throw high-current contactor RLY2 are connected, the diode D2 is connected into the current loop to realize inter-flow inhibition of the storage battery 2;
and 2.3, when the commercial power detection device detects that the commercial power is recovered, the control device corresponding to the fault sends out a silence state instruction, so that the No. 1 pin and the No. 4 pin of the corresponding single-pole double-throw high-current contactor RLY are connected, and the working process of the silence state is started.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the invention includes, but is not limited to, the examples described in the detailed description, as other embodiments derived from the technical solutions of the invention by a person skilled in the art are equally within the scope of the invention.
Claims (4)
1. A controllable inter-group current suppression circuit for battery pack daily operation installs in electric power system communication power supply circuit, its characterized in that: the output end of the suppression circuit is respectively connected with the positive poles of the storage battery pack 1 and the storage battery pack 2, the input end of the suppression circuit is connected with a positive bus of a communication power supply, the negative poles of the storage battery pack 1 and the storage battery pack 2 are connected with a negative bus of the communication power supply, and a load is connected between the positive bus and the negative bus of the communication power supply in parallel; the suppression circuit comprises a commercial power detection device, a single-pole double-throw high-current contactor RLY1, a single-pole double-throw high-current contactor RLY2, a detection unit L1, a detection unit L2, a diode D1, a diode D2, a control device 1 and a control device 2, wherein a positive bus is respectively connected with the input end of the detection unit L1 and the input end of the detection unit L2, the detection unit L1 is connected with the control device 1, the detection unit L2 is connected with the control device 2, the control device 1 is connected with the control device 2 through the commercial power detection device,
the output end of the detection unit L1 is connected with a number 1 pin of a single-pole double-throw high-current contactor RLY1, the positive electrode of the diode D1 is connected with a number 3 pin of the single-pole double-throw high-current contactor RLY1, the negative electrode of the diode D1 is respectively connected with a number 4 pin of the single-pole double-throw high-current contactor RLY1 and the positive electrode of the storage battery 1, a number 2 pin and a number 5 pin of the single-pole double-throw high-current contactor RLY1 are respectively connected with the control device 1, the output end of the detection unit L2 is connected with a number 2 pin of the single-pole double-throw high-current contactor RLY2, the positive electrode of the diode D2 is connected with a number 3 pin of the single-pole double-throw high-current contactor RLY2, and the negative electrode of the diode D2 is respectively connected with a number 4 pin of the single-pole double-throw high-current contactor RLY2 and the positive electrode of the storage battery 1.
2. A control method of the controllable inter-group current suppressing circuit for daily operation of a battery pack as claimed in claim 1, wherein: the control method comprises a silence state and a working state.
3. The control method of the controllable inter-group current suppressing circuit for daily operation of a battery pack according to claim 2, wherein: the working process of the silence state comprises the following steps:
step 1.1, a No. 1 pin and a No. 4 pin of a single-pole double-throw high-current contactor RLY1 and a single-pole double-throw high-current contactor RLY2 are connected, a diode D1 and a diode D2 do not work, and a battery pack operates according to the standard working principle of a communication power supply system;
step 1.2, detection unit L1, detection unit L2, control device 1 and control device 2 detect battery pack 1 and battery pack 2 in real time.
4. A control method of a controllable inter-bank current suppressing circuit for a daily operation of a battery pack according to claim 3, wherein: the working process of the working state comprises the following steps:
step 2.1, when a commercial power detection device detects a commercial power fault, and a detection unit L1 and a detection unit L2 monitor whether the flow between the storage battery pack 1 and the storage battery pack 2 exceeds a set threshold value, if yes, the step 2.2 is performed, otherwise, monitoring is continued;
step 2.2, if the inter-flow of the storage battery 1 exceeds a set threshold, the control device 1 sends an instruction to control the single-pole double-throw high-current contactor RLY1 to act, the No. 1 pin and the No. 3 pin of the single-pole double-throw high-current contactor RLY1 are connected, the diode D1 is connected into a current loop to realize inter-flow inhibition of the storage battery 1, if the inter-flow of the storage battery 2 exceeds the set threshold, the control device 2 sends an instruction to control the single-pole double-throw high-current contactor RLY2 to act, the No. 1 pin and the No. 3 pin of the single-pole double-throw high-current contactor RLY2 are connected, the diode D2 is connected into the current loop to realize inter-flow inhibition of the storage battery 2;
and 2.3, when the commercial power detection device detects that the commercial power is recovered, the control device corresponding to the fault sends out a silence state instruction, so that the No. 1 pin and the No. 4 pin of the corresponding single-pole double-throw high-current contactor RLY are connected, and the working process of the silence state is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723041.2A CN116454851A (en) | 2023-06-19 | 2023-06-19 | Controllable inter-group current suppression circuit for daily operation of storage battery pack and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723041.2A CN116454851A (en) | 2023-06-19 | 2023-06-19 | Controllable inter-group current suppression circuit for daily operation of storage battery pack and method thereof |
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| CN116454851A true CN116454851A (en) | 2023-07-18 |
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|---|---|---|---|
| CN202310723041.2A Pending CN116454851A (en) | 2023-06-19 | 2023-06-19 | Controllable inter-group current suppression circuit for daily operation of storage battery pack and method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204858658U (en) * | 2015-08-04 | 2015-12-09 | 福建省邮电规划设计院有限公司 | Hold battery measurement switched systems |
| CN106961127A (en) * | 2016-01-08 | 2017-07-18 | 中兴通讯股份有限公司 | battery charging and discharging method and circuit |
| CN113644704A (en) * | 2021-06-30 | 2021-11-12 | 国网山东省电力公司信息通信公司 | Two-way battery charging and discharging constant current control and circulating current suppression device, power supply and method |
| CN215120160U (en) * | 2020-12-17 | 2021-12-10 | 杭州奥能电源设备有限公司 | Bus voltage self-adaptive emergency power supply system |
-
2023
- 2023-06-19 CN CN202310723041.2A patent/CN116454851A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204858658U (en) * | 2015-08-04 | 2015-12-09 | 福建省邮电规划设计院有限公司 | Hold battery measurement switched systems |
| CN106961127A (en) * | 2016-01-08 | 2017-07-18 | 中兴通讯股份有限公司 | battery charging and discharging method and circuit |
| CN215120160U (en) * | 2020-12-17 | 2021-12-10 | 杭州奥能电源设备有限公司 | Bus voltage self-adaptive emergency power supply system |
| CN113644704A (en) * | 2021-06-30 | 2021-11-12 | 国网山东省电力公司信息通信公司 | Two-way battery charging and discharging constant current control and circulating current suppression device, power supply and method |
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Application publication date: 20230718 |