CN203056667U - Indirect parallel cell system of transformer station - Google Patents
Indirect parallel cell system of transformer station Download PDFInfo
- Publication number
- CN203056667U CN203056667U CN 201320084627 CN201320084627U CN203056667U CN 203056667 U CN203056667 U CN 203056667U CN 201320084627 CN201320084627 CN 201320084627 CN 201320084627 U CN201320084627 U CN 201320084627U CN 203056667 U CN203056667 U CN 203056667U
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- transformer station
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- batteries
- parallel connection
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Abstract
The utility model discloses an indirect parallel cell system of transformer station. The cell system comprises an AC input, a high frequency module unit and an output module, which are connected orderly, wherein the AC input is connected to a three-phase bus, the high frequency module unit comprises a high frequency power supply module and a cell sequentially connected, the output end of the high frequency module unit is connected with a DC bus, the input end of the high frequency module unit is connected with the three-phase bus, and the output module is connected with the DC bus. The cell system is small, light and flexible, and is mainly used in a small DC system. Unnecessary configuration is reduced, thereby fully utilizing places. According to the property that output voltage and current values are adjustable, the cell system when applied to a portable power supply is more flexible and has wider application scope.
Description
Technical field
The utility model relates to a kind of DC power system, particularly the indirect batteries in parallel connection of a kind of transformer station system.
Background technology
Traditional direct current system major part of uses such as transformer station, switching station, industrial and mining enterprises is that a group storage battery is connected afterwards and the DC control supply of one group of charger formation in parallel.Batteries is arranged, charging device and insulating monitoring unit, battery is patrolled and examined, equipment such as switching value detection constitute, be widely used in fields such as various types of power plants and transformer station, be a kind of power-supply system that under normal and various accident conditions, can both guarantee reliable power supply, can be described as a kind of DC power system that does not have a power failure.Storage battery is the heart of direct current system, and batteries is made up of to 108 joint series systems from 9 joints many 2V-12V batteries, obtains corresponding 110V or 220V power supply.This battery pack has corresponding technical problem with the direct current system that the connection charging module constitutes, and the battery number of battery pack does not wait to 108 joints from 9 joints, causes traditional direct current system volume bigger, and floor space is big, and weight is excessive.If in the whole system as long as under the situation that storage battery breaks down, whole system all face can't operate as normal danger, and in the existing equipment dilatation bigger difficulty is arranged, improvement expenses is higher.Increase the capacity that storage battery is changed in load as transformer station's dilatation, then need change all batteries.The fail safe of system and flexibility are all lower, are difficult to satisfy the situation of current rapid economic development, also increased the cost of transforming and cause the waste that there is no need in to system reform process.
The utility model content
Given this, the utility model provides indirect batteries in parallel connection system of a kind of transformer station, and this battery system can be reduced investment outlay by using the mini system flexible configuration, realizes most optimum distribution of resources.
The purpose of this utility model is achieved through the following technical solutions, and indirect batteries in parallel connection system of transformer station comprises the interchange input, high-frequency model unit and the output module that connect successively, and described interchange input is connected in the three-phase bus; Described high-frequency model unit comprises high frequency power module and the battery that connects successively, and described high-frequency model unit output links to each other with dc bus, and input is connected with three-phase bus; Described output module is connected with dc bus.
Further, also be in series with fuse between high frequency power module and the battery.
Further, described interchange input is three-phase input or single-phase input.
Further, also comprise the insulation tester, direct-current supervision unit and the switching value detecting unit that are connected with dc bus respectively, described insulation tester is for detection of the state of insulation of bus and branch road, described direct-current supervision unit is used for monitoring bus and high-frequency model cell current and voltage, and described switching value detecting unit is used for the online detection of system switching state.
Further, indirect batteries in parallel connection system of described transformer station comprises several high-frequency model unit, and the output of several high-frequency model unit is connected in parallel.
Further, the identical voltage and current of described several high-frequency model unit outputs.
The beneficial effects of the utility model:
1, the utility model utilizes the HF switch technology, joins a battery by high frequency power module, forms the high-frequency model unit, have that volume is little, in light weight, the characteristics of flexible configuration, mainly be to be used in the direct current system of miniaturization, reduce unnecessary configuration, take full advantage of the place.
2, output voltage, current value can be established, and can be used on the compact power, more can embody its maneuverability, the wide value of the scope of application.
3, be convenient to transform, the utilance of original system is greatly promoted, guarantee to have saved the cost of investment again under the prerequisite normal the time.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the indirect batteries in parallel connection system construction drawing of transformer station;
Fig. 2 is the schematic diagram of small intelligent DC power supply;
The indirect batteries in parallel connection system of transformer station that Fig. 3 constitutes for the small intelligent power supply.
Embodiment
As shown in Figure 1, the small intelligent DC power supply comprises the interchange input, high-frequency model unit and the output module that connect successively.As shown in Figure 2, high frequency power module is connected with battery and forms the high-frequency model unit, also is connected fuse between high frequency power module and the battery, and high-frequency model unit output is connected on the dc bus.This high-frequency model unit namely is a complete small intelligent DC power supply (hereinafter to be referred as mini system).Mini system has battery management, module alarm, communication, input and output control function, and the energy independent operating is the load power supply.The capacity maximum of this mini system matching battery can reach 400Ah, can satisfy the demand of long-time stand-by power supply, gives the bigger guarantee of load.
The output of a plurality of high-frequency models unit is connected in parallel and forms the batteries in parallel connection system.Exchange input and be connected in the three-phase loop by circuit breaker 1JQ1, it can be single-phase exchanging input, also can be three-phase.The output of high-frequency model unit is connected on the dc bus with shunt by an ammeter, and input is connected in the three-phase loop by circuit breaker JQ1.Insulation tester, direct-current supervision unit and switching value detecting unit also are installed on the dc bus according to demand.Insulation tester is for detection of the state of insulation of bus and branch road, and the Monitoring Line Leaked Current of Line to Ground hinders in real time, and this numerical value can be set as the case may be.When the line-to-ground insulation is reduced to set point, will send alarm signal.The direct-current supervision unit is used for monitoring bus and high-frequency model cell current and voltage.The switching value detecting unit is used for the online detection of system switching state and gives a warning, which circuit breaker breaks down after tripping operation or which the road fuse blows in direct current system, the switching value detecting unit will send alarm signal, and to demonstrate by supervisory control system be break down tripping operation or which road fuse blows of which circuit breaker.
Different high frequency power modules are by the communication function between each module, and the output current of high frequency power module is carried out current-sharing, guarantee the consistency of each mini system load, by the identical direct current of high frequency power module output, and realize that band carries.
The small intelligent DC power supply has the function of battery being carried out Charge Management, and when the interchange input was broken down, battery was by the corresponding voltage of high-frequency model discharge output, electric current.
In the present embodiment, as shown in Figure 3, the voltage and current of high frequency power module output can be regulated according to different demands.Can also be according to actual needs, the mini system of quantity is not allowed in configuration.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. the indirect batteries in parallel connection of transformer station system is characterized in that: comprise the interchange input, high-frequency model unit and the output module that connect successively, described interchange input is connected in the three-phase bus; Described high-frequency model unit comprises high frequency power module and the battery that connects successively, and described high-frequency model unit output links to each other with dc bus, and input is connected with three-phase bus; Described output module is connected with dc bus.
2. according to indirect batteries in parallel connection system of the described transformer station of claim 1, it is characterized in that: also be in series with fuse between high frequency power module and the battery.
3. according to indirect batteries in parallel connection system of the described transformer station of claim 1, it is characterized in that: described interchange input is three-phase input or single-phase input.
4. according to indirect batteries in parallel connection system of the described transformer station of claim 1, it is characterized in that: also comprise the insulation tester, direct-current supervision unit and the switching value detecting unit that are connected with dc bus respectively, described insulation tester is for detection of the state of insulation of bus and branch road, described direct-current supervision unit is used for monitoring bus and high-frequency model cell current and voltage, and described switching value detecting unit is used for the online detection of system switching state.
5. according to indirect batteries in parallel connection system of the described transformer station of claim 1, it is characterized in that: indirect batteries in parallel connection system of described transformer station comprises several high-frequency model unit, and the output of several high-frequency model unit is connected in parallel.
6. according to indirect batteries in parallel connection system of the described transformer station of claim 5, it is characterized in that: the identical voltage and current of described several high-frequency model unit outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084627 CN203056667U (en) | 2013-02-25 | 2013-02-25 | Indirect parallel cell system of transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084627 CN203056667U (en) | 2013-02-25 | 2013-02-25 | Indirect parallel cell system of transformer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203056667U true CN203056667U (en) | 2013-07-10 |
Family
ID=48739586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320084627 Expired - Lifetime CN203056667U (en) | 2013-02-25 | 2013-02-25 | Indirect parallel cell system of transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203056667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787394A (en) * | 2020-11-28 | 2021-05-11 | 国网河南省电力公司经济技术研究院 | Transformer substation direct current bus type distributed parallel direct current power supply system with prefabricated cabin |
-
2013
- 2013-02-25 CN CN 201320084627 patent/CN203056667U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787394A (en) * | 2020-11-28 | 2021-05-11 | 国网河南省电力公司经济技术研究院 | Transformer substation direct current bus type distributed parallel direct current power supply system with prefabricated cabin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |