CN206725674U - A kind of damping module experimental rig - Google Patents
A kind of damping module experimental rig Download PDFInfo
- Publication number
- CN206725674U CN206725674U CN201720472142.7U CN201720472142U CN206725674U CN 206725674 U CN206725674 U CN 206725674U CN 201720472142 U CN201720472142 U CN 201720472142U CN 206725674 U CN206725674 U CN 206725674U
- Authority
- CN
- China
- Prior art keywords
- module
- damping
- bridge
- experimental rig
- switch
- 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.)
- Active
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses the damping module experimental rig of two kinds of structures, and one of which structure includes power supply, power switch, the first half-bridge power module, the second half-bridge power module, load reactance and n a damping module to be tried, and n is natural number；Wherein, the structure of first, second half-bridge power module is identical, and including resistance parallel with one another, storage capacitor and bridge arm, and first, second half-bridge power module is in parallel in the same direction；After power supply is connected with power switch, both ends of the both ends respectively with the first half-bridge power module are connected；With n after examination damping module is in series, both ends are connected the load reactance with the bridge arm output midpoint of first, second half-bridge power module respectively.Such a experimental rig equivalent on several damping modules can reproduce steady state condition and voltage stress, current stress and thermal stress under transient operating mode.
Description
Technical field
The utility model belongs to applied power electronics field, more particularly to a kind of damping module experimental rig.
Background technology
Flexibility based on modularization multi-level converter (Modular Multilevel Converter, MMC) technology is straight
Stream technology of transmission of electricity has broad application prospects, and because DC power transmission line length may reach thousands of kilometers, direct-current short circuit occurs
The probability of failure is very big.The currently used modular multilevel converter valve submodule based on half-bridge structure is due to full-controlled switch
The presence of device inverse parallel fly-wheel diode, in DC side failure, it can not generally use the side of control or locking transverter
Method carrys out limiting short-circuit current, typically can only be by disconnecting AC breaker come disjunction fault current, after result in the system failure
Fast quick-recovery can not be realized.
Damping module is added in the bridge arm of transverter, after DC side breaks down, pair of quick lock damping module
To flow passage switch, damping resistance is put into, can effectively suppress the climbing of direct-current short circuit electric current and accelerate the jump of AC breaker
Open the rapid decay of rear fault current.
Damping module is needed to carry out it routine test complete in detail when dispatching from the factory, and full-control type in damping module is partly led
It is to carry that body switching device, which builds voltage stress, current stress and the thermal stress equivalent test environment same or like with actual condition,
The important tests means of high-damping Module Reliability.This case is based on the routine test demand generation of dispatching from the factory of damping module.
Utility model content
The purpose of this utility model, it is to provide a kind of damping module experimental rig, can be first-class in several damping modules
Effect reproduces steady state condition and voltage stress, current stress and thermal stress under transient operating mode.
In order to reach above-mentioned purpose, solution of the present utility model is：
A kind of damping module experimental rig, including power supply, power switch, the first half-bridge power module, the second half-bridge power
Module, load reactance and n a damping module to be tried, n is natural number；Wherein, the structure phase of first, second half-bridge power module
Together, including resistance parallel with one another, storage capacitor and bridge arm, and first, second half-bridge power module is in parallel in the same direction；Power supply with
After power switch series connection, both ends of the both ends respectively with the first half-bridge power module are connected；The load reactance treats examination damping with n
After module is in series, both ends are connected with the bridge arm output midpoint of first, second half-bridge power module respectively.
Above-mentioned bridge arm includes first, second switch element, and first, second switch element connects the pole of inverse parallel two respectively
Manage, after first, second switch element sequential series, then it is in parallel with storage capacitor.
Above-mentioned power supply possesses output soft start function.
Above-mentioned damping module to be tried includes damping resistance, full-controlled switch device, fly-wheel diode and by-pass switch, its
In, full-controlled switch device and fly-wheel diode reverse parallel connection form a semiconductor module, the damping resistance, by-pass switch
It is parallel with one another with semiconductor module.
A kind of test method based on damping module experimental rig as previously described, comprises the following steps：
Step 1, power switch is closed, power supply charges to the storage capacitor in first, second half-bridge power module；
Step 2, when the storage capacitor voltage of first, second half-bridge power module reaches setting value, n to be tried first is unlocked
Individual damping module, then first, second half-bridge power module is unlocked, load reactance, the electric current of damping module to be tried are flowed through in adjustment, from
And steady state voltage stress, current stress and thermal stress under equivalent operating mode are set up on damping module to be tried；
Step 3, voltage stress of the damping module to be tried under equivalent operating mode, current stress and thermal stress steady-state operation are certain
After time, the transient current of damping module to be tried is flowed through in regulation, so as to be set up on damping module to be tried under equivalent operating mode
Transient voltage stress, current stress and thermal stress；
Step 4, after the completion of damping module steady state test to be tried and relay protection, the half-bridge power mould of locking first, second
Block, disconnecting power switch, power supply is exited, treat that first, second half-bridge power module storage capacitor and load reactance energy release
Finish, off-test.
A kind of damping module experimental rig, including power supply, power switch, full bridge power module, load reactance and n wait to try
Damping module, n are natural number；Wherein, full bridge power module includes resistance parallel with one another, storage capacitor and two bridge arms；Electricity
After source is connected with power switch, both ends of the both ends respectively with full bridge power module are connected；The load reactance treats examination damping with n
After module is in series, output midpoint of the both ends respectively with two bridge arms in full bridge power module is connected.
Above-mentioned every bridge arm includes first, second switch element, and first, second switch element connects inverse parallel respectively
Diode, after first, second switch element sequential series, then it is in parallel with storage capacitor.
Above-mentioned power supply possesses output soft start function.
Above-mentioned damping module to be tried includes damping resistance, full-controlled switch device, fly-wheel diode and by-pass switch, its
In, full-controlled switch device and fly-wheel diode reverse parallel connection form a semiconductor module, the damping resistance, by-pass switch
It is parallel with one another with semiconductor module.
A kind of test method based on damping module experimental rig as previously described, comprises the following steps：
Step 1, power switch is closed, power supply charges to the storage capacitor in full bridge power module；
Step 2, when the storage capacitor voltage of full bridge power module reaches setting value, n damping mould to be tried first is unlocked
Block, then full bridge power module is unlocked, load reactance, the electric current of damping module to be tried are flowed through in adjustment, so as in damping module to be tried
On set up steady state voltage stress, current stress and thermal stress under equivalent operating mode；
Step 3, voltage stress of the damping module to be tried under equivalent operating mode, current stress and thermal stress steady-state operation are certain
After time, the transient current of damping module to be tried is flowed through in regulation, so as to be set up on damping module to be tried under equivalent operating mode
Transient voltage stress, current stress and thermal stress；
Step 4, after the completion of damping module steady state test to be tried and relay protection, locking full bridge power module, electricity is disconnected
Source switch, power supply is exited, treat that full bridge power module storage capacitor and the release of load reactance energy finish, off-test.
After such scheme, the utility model has the advantages that：
(1) a kind of damping module experimental rig provided by the utility model and its test method, can meet multiple treat simultaneously
Voltage stress, current stress and heat stress test of the damping module under steady state condition and transient operating mode are tried, test efficiency is high.
(2) a kind of damping module experimental rig provided by the utility model and its test method, by adjusting test loop
Needed for electric current, change the voltage of the storage capacitor in described half-bridge power module, different capacity grade can be met extremely
Experiment of the damping module to be tried under steady state condition and transient operating mode described in few one.
(3) a kind of damping module experimental rig provided by the utility model and its test method, by being transported to experimental rig
The monitoring of row process, judge whether experimental rig is faulty, if faulty, starting protection action, pending fault releases again after releasing
Protection act, it ensure that safety of the experimental rig during experiment.
Brief description of the drawings
Fig. 1 is the first implementation structural representation of the utility model experimental rig；
Fig. 2 is second of implementation structural representation of the utility model experimental rig.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model and beneficial effect are described in detail.
As shown in figure 1, be a kind of the first implementation structural representation of damping module experimental rig of the utility model, including
L and n power supply E, power switch Km, half-bridge power module SM1, half-bridge power module SM2, load reactance damping module (n to be tried
For natural number, n >=1), wherein, half-bridge power module SM1, SM2 structure are identical, including resistance R, storage capacitor C and bridge
Arm, bridge arm uses switch element T1, T2, and switch element T1, T2 connect anti-paralleled diode D1, D2, switch element T1 respectively
Negative pole connecting valve element T2 positive pole, switch element T1 positive pole and switch element T2 negative pole are respectively as half-bridge power
The anode and negative terminal of module, resistance R and storage capacitor C are connected in parallel between the anode of half-bridge power module and negative terminal respectively；It is described
Half-bridge power module SM1, SM2 are in parallel in the same direction.
For the positive pole of the power supply E by power switch Km connection half-bridge power modules SM1, SM2 anode, power supply E's is negative
Pole connection half-bridge power module SM1, SM2 negative pole, so as to provide electric energy for two storage capacitor C therein；The power supply E tools
Standby output soft start function, it can avoid directly to the storage capacitor C short circuit chargings in half-bridge power module SM1, SM2.
The load reactance L and n after examination damping module is in series, both ends respectively with two half-bridge power module SM1,
SM2 bridge arm output midpoint connection.Wherein, respectively damping module to be tried includes a damping resistance Rz, a full-controlled switch
Device T, a sustained diode and a by-pass switch K, wherein, full-controlled switch device T and sustained diode are reverse simultaneously
Connection one semiconductor module of composition, the damping resistance Rz, by-pass switch K and semiconductor module are parallel with one another.
As shown in Fig. 2 be that a kind of the another of damping module experimental rig of the utility model implements structural representation, be by
Two discrete half-bridge power module SM1, SM2 form full bridge power a module SM, load reactance L and damping module group to be tried
Into series arm both ends be connected to the midpoints of full bridge power module two bridge arms of SM.
By taking structure shown in Fig. 1 as an example, illustrate a kind of step flow of damping module test method of the utility model：
Step 1, power switch Km is closed, power supply E charges to two half-bridge power modules SM1, SM2 storage capacitor C；
Step 2, when the storage capacitor C voltage of two half-bridge power modules reaches setting value, n resistance to be tried first is unlocked
The full-controlled switch device of Buddhist nun's module, then the full-controlled switch device of half-bridge power module is unlocked, fed back and controlled by current closed-loop
Load reactance L and the electric current of damping module series arm to be tried are flowed through in system adjustment, so as to be set up on damping module to be tried
Imitate steady state voltage stress, current stress and the thermal stress under operating mode；
Step 3, voltage stress of the damping module to be tried under equivalent operating mode, current stress and thermal stress steady-state operation are certain
After time, by adjusting control parameter, regulation flows through the transient current of damping module so as to be set up on damping module to be tried
Transient voltage stress, current stress and thermal stress under equivalent operating mode；
Step 4, after the completion of damping module steady state test to be tried and relay protection, two half-bridge power modules of locking are controlled entirely
Type switching device, disconnecting power switch Km, power supply E is exited, treat that half-bridge power module storage capacitor C and load reactance L energy are released
Discharge complete, off-test.
Above example is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected.
Claims (8)
- A kind of 1. damping module experimental rig, it is characterised in that：Including power supply, power switch, the first half-bridge power module, second Half-bridge power module, load reactance and n a damping module to be tried, n is natural number；Wherein, first, second half-bridge power module Structure is identical, and including resistance parallel with one another, storage capacitor and bridge arm, and first, second half-bridge power module is in parallel in the same direction； After power supply is connected with power switch, both ends of the both ends respectively with the first half-bridge power module are connected；The load reactance is treated with n After examination damping module is in series, both ends are connected with the bridge arm output midpoint of first, second half-bridge power module respectively.
- A kind of 2. damping module experimental rig as claimed in claim 1, it is characterised in that：The bridge arm includes first, second Switch element, and first, second switch element connects anti-paralleled diode respectively, after first, second switch element sequential series, It is in parallel with storage capacitor again.
- A kind of 3. damping module experimental rig as claimed in claim 1, it is characterised in that：The power supply possesses output delay startup Function.
- A kind of 4. damping module experimental rig as claimed in claim 1, it is characterised in that：The damping module to be tried includes resistance Buffer resistance, full-controlled switch device, fly-wheel diode and by-pass switch, wherein, full-controlled switch device and fly-wheel diode are anti- To a semiconductor module is composed in parallel, the damping resistance, by-pass switch and semiconductor module are parallel with one another.
- A kind of 5. damping module experimental rig, it is characterised in that：Including power supply, power switch, full bridge power module, load reactance With n damping modules to be tried, n is natural number；Wherein, full bridge power module includes resistance parallel with one another, storage capacitor and two Bar bridge arm；After power supply is connected with power switch, both ends of the both ends respectively with full bridge power module are connected；The load reactance and n It is individual after examination damping module be in series after, output midpoint of the both ends respectively with two bridge arms in full bridge power module is connected.
- A kind of 6. damping module experimental rig as claimed in claim 5, it is characterised in that：Every bridge arm includes the First, second switch element, and first, second switch element connects anti-paralleled diode, first, second switch element order respectively After series connection, then it is in parallel with storage capacitor.
- A kind of 7. damping module experimental rig as claimed in claim 5, it is characterised in that：The power supply possesses output delay startup Function.
- A kind of 8. damping module experimental rig as claimed in claim 5, it is characterised in that：The damping module to be tried includes resistance Buffer resistance, full-controlled switch device, fly-wheel diode and by-pass switch, wherein, full-controlled switch device and fly-wheel diode are anti- To a semiconductor module is composed in parallel, the damping resistance, by-pass switch and semiconductor module are parallel with one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720472142.7U CN206725674U (en) | 2017-04-28 | 2017-04-28 | A kind of damping module experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720472142.7U CN206725674U (en) | 2017-04-28 | 2017-04-28 | A kind of damping module experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725674U true CN206725674U (en) | 2017-12-08 |
Family
ID=60508389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720472142.7U Active CN206725674U (en) | 2017-04-28 | 2017-04-28 | A kind of damping module experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015081A (en) * | 2017-04-28 | 2017-08-04 | 南京南瑞继保电气有限公司 | A kind of damping module experimental rig and its test method |
| AT523673A1 (en) * | 2020-04-03 | 2021-10-15 | Omicron Electronics Gmbh | Switchable amplifier |
-
2017
- 2017-04-28 CN CN201720472142.7U patent/CN206725674U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015081A (en) * | 2017-04-28 | 2017-08-04 | 南京南瑞继保电气有限公司 | A kind of damping module experimental rig and its test method |
| AT523673A1 (en) * | 2020-04-03 | 2021-10-15 | Omicron Electronics Gmbh | Switchable amplifier |
| AT523673B1 (en) * | 2020-04-03 | 2023-03-15 | Omicron Electronics Gmbh | Switchable amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107015081A (en) | A kind of damping module experimental rig and its test method | |
| US10483788B2 (en) | Charging method for sub-module based hybrid converter | |
| US10763761B2 (en) | Charging method for sub-module based hybrid converter | |
| WO2017000925A1 (en) | Fault current-suppressing damper topology circuit and control method thereof and converter | |
| CN103915856B (en) | A kind of base station is grid-connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN106877301A (en) | A kind of high voltage DC breaker and test method | |
| CN113708654B (en) | Flexible direct current converter valve integrating surplus power dissipation function and control method | |
| CN110176801A (en) | A method of it prevents from generating circulation between battery cluster | |
| CN106230044A (en) | Can be battery pack structure and its implementation of open-circuit cell offer discharge loop | |
| CN109905019A (en) | A kind of discharge circuit and its control method with defencive function | |
| CN110261762B (en) | Circuit suitable for valve section power offset and short circuit test | |
| CN106972479A (en) | The design method and high-low pressure dc circuit breaker of a kind of direct-current grid | |
| CN206725674U (en) | A kind of damping module experimental rig | |
| CN109510182A (en) | A kind of hybrid fault current limiter of resistance sense type and its control method | |
| CN109494752A (en) | A kind of centralization resistance energy-consuming device and its control method | |
| CN109586260A (en) | A kind of resistance sense type capacitor commutation blended learning and its control method | |
| CN107482576B (en) | A kind of starting control strategy of hybrid high voltage DC breaker | |
| CN107561456B (en) | Power module test device and test method | |
| CN109546674A (en) | A kind of bridge-type direct current energy-consuming device and control method | |
| CN207010216U (en) | A kind of low-voltage direct breaker | |
| CN110445205B (en) | DC power supply balance management system and control method | |
| CN107196394A (en) | Storage batteries of transformer substation group controller and its control method of use | |
| WO2022193268A1 (en) | Load transfer and energy storage regulation-based power distribution network voltage control method and system | |
| CN109728571A (en) | A kind of hybrid fault current limiter of capacitor commutation and its control method | |
| Liu et al. | A study on vsc-hvdc based black start method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |