CN209387800U - The Insulation Inspection Device for Direct-Current System of two-node cluster hot backup - Google Patents
The Insulation Inspection Device for Direct-Current System of two-node cluster hot backup Download PDFInfo
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- CN209387800U CN209387800U CN201822080810.9U CN201822080810U CN209387800U CN 209387800 U CN209387800 U CN 209387800U CN 201822080810 U CN201822080810 U CN 201822080810U CN 209387800 U CN209387800 U CN 209387800U
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Abstract
The utility model relates to insulation monitoring device running equipment technical fields in direct current system, more particularly to a kind of Insulation Inspection Device for Direct-Current System of two-node cluster hot backup, insulating monitoring equipment includes bridge circuit module and control module, the bridge circuit module includes controllable balance bridge in parallel, uncontrollable balance bridge and detection bridge, the insulating monitoring equipment includes two, it is set to host and slave, host and slave are communicated by communication module, the uncontrollable balance bridge of the slave is hanging, the uncontrollable balance bridge of host is being directly connected to direct current system just, negative busbar, the controllable balance bridge and detection bridge of the host and slave are connected with direct current system positive and negative busbar, the equal series-connection electronic switch of resistance of the controllable balance bridge and detection bridge, electronic switch is connected with control module.The utility model avoids influencing each other for main equipment and alternate device, realizes the uninterrupted monitoring to direct current system insulation status.
Description
Technical field
The utility model relates to insulation monitoring device running equipment technical fields in direct current system, and in particular to a kind of two-shipper
The Insulation Inspection Device for Direct-Current System of warm back-up.
Background technique
Currently, the equipping rules of insulation monitoring device are one section of bus bar configuration, one insulation monitoring devices in direct current system,
When running insulation monitoring device breaks down, the insulation status of direct current system will lose monitoring, and direct current system is caused to transport
Capable reliability reduces.In order to improve the reliability of DC system insulating monitoring, it is necessary to carry out two-shipper to insulation monitoring device
Backup, puts into another alternate device wherein when a device fails.
The dual-host backup of insulating monitoring has been carried out in some substations at present, and an equipment operates normally, and another sets
It is standby to be in the stand-by state that do not power, when a wherein failure, personnel is needed to carry out the switching of equipment to scene, operated numerous
It is trivial.Since the outfit of direct current personnel is fewer, it is sometimes difficult to timely find the equipment fault at scene, therefore cannot carry out in time
The switching of equipment.
Since the testing principle of existing insulation monitoring device is by the way of balance bridge and uneven resistor bridge, if only
Above-mentioned simple two-node cluster hot backup is carried out, influencing each other for main equipment and alternate device will certainly be caused, especially in two sections of buses
System and in the case where there is looped network, inevitably result in equipment error in judgement or directly to system cause it is additional therefore
Barrier.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that: a kind of direct current system of two-node cluster hot backup is provided
Insulation monitoring device avoids influencing each other for main equipment and alternate device, realizes the uninterrupted prison to direct current system insulation status
It surveys.
The technical scheme adopted by the utility model for solving the technical problem is:
The Insulation Inspection Device for Direct-Current System of the two-node cluster hot backup, insulating monitoring equipment include bridge circuit module and control
Module, the bridge circuit module include controllable balance bridge in parallel, uncontrollable balance bridge and detection bridge, the insulating monitoring equipment
Including two, it is set to host and slave, host and slave are communicated by communication module, and the uncontrollable of the slave is put down
Heng Qiao is hanging, and the uncontrollable balance bridge of host is directly connected to the positive and negative bus of direct current system, the controllable balance of the host and slave
Bridge and detection bridge are connected with direct current system positive and negative busbar, and the equal serial electronic of resistance of the controllable balance bridge and detection bridge is opened
It closes, electronic switch is connected with control module.
When work, real-time communication is carried out between host and slave, in the case where host normal operation, is deposited in direct current system
In the balance resistor bridge composed in parallel by the uncontrollable balance bridge and controllable balance bridge of host, progress insulating monitoring by host control
Its throwing for detecting bridge is made to move back, when host breaks down, host can interrupt the communication with slave, or be sent to it failure order,
Then slave automatically accesses direct current system, in direct current system at this time exist by host uncontrollable balance bridge and slave it is controllable
The balance resistor bridge that balance bridge composes in parallel controls its throwing for detecting bridge by slave when carrying out insulating monitoring and moves back, and system is total to put down
Weighing apparatus resistor bridge size does not change, equipment investment and exits uneven resistor bridge and is carried out by slave, with the realization of this slave to straight
The insulating monitoring of streaming system.Host makes host can by controlling the electronic switch closure that host is connected on controllable balance resistor bridge
Control balance bridge and access direct current system, slave by control the electronic switch that is connected on controllable balance resistor bridge of slave disconnect make from
The controllable balance bridge of machine exits direct current system.
Preferably, the electronic switch is switched using switch mosfet or IGBT.
Preferably, the communication module uses RS485 communication module.
Compared with prior art, the utility model has the following beneficial effects:
The utility model avoids influencing each other for main equipment and alternate device, realize to direct current system insulation status not between
Disconnected monitoring.In the handoff procedure of slave, by control slave controllable balance resistor bridge investment and exit, system always
Earth balance resistor bridge size remains unchanged.When host is normal, host moves back the detection resistor bridge realization direct current system of host by throwing
The insulation status of system monitors；When host breaks down, realize that direct current system is exhausted by the detection resistor bridge of slave automatic switching slave
Edge condition monitoring, slave two-node cluster hot backup reduce the probability of direct current system operation troubles.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
Embodiment 1:
As shown in Figure 1, the Insulation Inspection Device for Direct-Current System of two-node cluster hot backup described in the utility model, insulating monitoring equipment
Including bridge circuit module and control module, the bridge circuit module includes controllable balance bridge, uncontrollable balance bridge and inspection in parallel
Bridge is surveyed, the insulating monitoring equipment includes two, is set to host and slave, host and slave are led to by communication module
Letter, the uncontrollable balance bridge of the slave is hanging, and the uncontrollable balance bridge of host is directly connected to the positive and negative bus of direct current system, institute
The controllable balance bridge and detection bridge for stating host and slave are connected with direct current system positive and negative busbar, the controllable balance bridge and detection
The equal series-connection electronic switch of the resistance of bridge, electronic switch are connected with control module.
Wherein, electronic switch is switched using switch mosfet or IGBT；Communication module uses RS485 communication module.
The utility model avoids influencing each other for main equipment and alternate device, realize to direct current system insulation status not between
Disconnected monitoring.When work, real-time communication is carried out between host and slave, in the case where host normal operation, electronic switch S1, S2
It is closed, exists in direct current system and put down by what uncontrollable balance resistor bridge R1, R2 and controllable balance resistor bridge R3, R4 of host were formed
Weigh resistor bridge, controls detection resistor bridge R5, R6 in turn by the shutdown of host control electronic switch S3, S4 when carrying out insulating monitoring
Throwing is moved back, and when host breaks down, host can interrupt the communication with slave, or be sent to it failure order, and then slave is automatic
Direct current system is accessed, electronic switch S1, S2 is disconnected at this time, electronic switch S5, S6 closure, is existed by host not in direct current system
The balance resistor bridge of controllable balance resistor bridge R9, R10 of controllable balance resistor bridge R1, R2 and slave composition, carries out insulating monitoring
When by slave control electronic switch S7, S8 shutdown so that control its detect resistor bridge R11, R12 throwing move back, the total balance of system
Resistor bridge size does not change, equipment investment with exit uneven resistor bridge and carried out by slave, realized with this slave to direct current
The insulating monitoring of system.Host makes host-controllable by controlling the electronic switch closure that host is connected on controllable balance resistor bridge
Balance bridge accesses direct current system, and slave makes slave by controlling the electronic switch disconnection that slave is connected on controllable balance resistor bridge
Controllable balance bridge exit direct current system.
Claims (3)
1. a kind of Insulation Inspection Device for Direct-Current System of two-node cluster hot backup, insulating monitoring equipment includes bridge circuit module and control mould
Block, the bridge circuit module include controllable balance bridge in parallel, uncontrollable balance bridge and detection bridge, which is characterized in that described exhausted
Edge monitoring device includes two, is set to host and slave, host and slave are communicated by communication module, the slave
Uncontrollable balance bridge it is hanging, the uncontrollable balance bridge of host is directly connected to the positive and negative bus of direct current system, the host and slave
Controllable balance bridge and detection bridge be connected with direct current system positive and negative busbar, the controllable balance bridge and detect bridge resistance go here and there
Join electronic switch, electronic switch is connected with control module.
2. the Insulation Inspection Device for Direct-Current System of two-node cluster hot backup according to claim 1, which is characterized in that the electronics
Switch is switched using switch mosfet or IGBT.
3. the Insulation Inspection Device for Direct-Current System of two-node cluster hot backup according to claim 1, which is characterized in that the communication
Module uses RS485 communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822080810.9U CN209387800U (en) | 2018-12-12 | 2018-12-12 | The Insulation Inspection Device for Direct-Current System of two-node cluster hot backup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822080810.9U CN209387800U (en) | 2018-12-12 | 2018-12-12 | The Insulation Inspection Device for Direct-Current System of two-node cluster hot backup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209387800U true CN209387800U (en) | 2019-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822080810.9U Active CN209387800U (en) | 2018-12-12 | 2018-12-12 | The Insulation Inspection Device for Direct-Current System of two-node cluster hot backup |
Country Status (1)
| Country | Link |
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| CN (1) | CN209387800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608065A (en) * | 2021-07-02 | 2021-11-05 | 中国电力科学研究院有限公司 | Multi-direct-current system ring network fault monitoring device and method |
-
2018
- 2018-12-12 CN CN201822080810.9U patent/CN209387800U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608065A (en) * | 2021-07-02 | 2021-11-05 | 中国电力科学研究院有限公司 | Multi-direct-current system ring network fault monitoring device and method |
| CN113608065B (en) * | 2021-07-02 | 2024-05-28 | 中国电力科学研究院有限公司 | Multi-direct-current system looped network fault monitoring device and method |
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