CN203911780U - Modularized multi-level current converter power module with rapid-plugging electric connection component - Google Patents

Modularized multi-level current converter power module with rapid-plugging electric connection component Download PDF

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Publication number
CN203911780U
CN203911780U CN201420334731.5U CN201420334731U CN203911780U CN 203911780 U CN203911780 U CN 203911780U CN 201420334731 U CN201420334731 U CN 201420334731U CN 203911780 U CN203911780 U CN 203911780U
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China
Prior art keywords
power
capacitor
bus bar
composite bus
igbt
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CN201420334731.5U
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Chinese (zh)
Inventor
封磊
苟锐锋
刘大鹏
杨晓平
马志荣
赵朝伟
雒雯霞
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Xi'an Xidian Power System Co., Ltd.
China XD Electric Co Ltd
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China XD Electric Co Ltd
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Abstract

The utility model provides a modularized multi-level current converter power module with a rapid-plugging electric connection component. The module comprises a power body, a direct current capacitor and a rapid-plugging electric connection component. The power body and the direct current capacitor are connected through the rapid-plugging electric connection component. The rapid-plugging electric connection component comprises a direct current capacitor side composite busbar, a power block side composite busbar and a socket connector installed on the direct current capacitor side composite busbar. The socket connector achieves socket connection with the power block side composite busbar, thus easy plugging of electrical connection of positive and negative electrode composite busbars between the direct current capacitor and the power body is achieved, the direct current capacitor and the power body can be separated directly, and the power module facilitates replacing or maintenance when components of IGBT, an IGBT driving plate, a thyristor, a power module control plate and the like in the power module go wrong.

Description

A kind of modularization multi-level converter power model with fast insert-pull electrical connection module
Technical field
The utility model belongs to Technology of HVDC based Voltage Source Converter field, relates to a kind of internal structure of modularization multi-level converter power model, is specifically related to a kind of modularization multi-level converter power model with fast insert-pull electrical connection module.
Background technology
Based on voltage source converter (voltage source converter, VSC) flexible DC power transmission system, due to its economy, flexibly, the power transmission mode of high-quality, high controllability, can, by these small-sized decentralized power ss by the mode incoming transport electrical network of economy, environmental protection, be the focus of studying both at home and abroad.The power model of modularization multi-level converter has modular construction, and extensibility is strong, easily realizes the features such as Redundant Control, is therefore very suitable for flexible DC power transmission system.Along with the capacity of flexible DC power transmission system is increasing, the volume and weight of the DC capacitor in power model (hundreds of kilogram) also more comes also large.Because the volume and weight of DC capacitor is larger, and be difficult for being damaged, and other components and parts nearly all concentrate in power body.Therefore from Design of Mechanical Structure angle, power model can be divided into two parts, i.e. DC capacitor and power body.In DC capacitor and power model, the electrical connection of other Important Components (for example: igbt, insulated gate bipolar transistor, IGBT) realizes by composite bus bar.The busbar of conventional power module is a monoblock or connects by bolt and nut, and DC capacitor and power body cannot directly separate.According to practical operating experiences, the components and parts such as the IGBT in power model, IGBT drive plate, thyristor, power model control board easily break down and need to change or maintenance.Therefore be necessary to provide the electric connection technology of the inner DC capacitor of a kind of suitable modules multilevel converter power model and power body, realization is taken off the power body of each power model separately from valve tower, and heavy DC capacitor is stayed on valve tower, thereby reduce the complexity of dismounting, reduce maintenance cost, realize the reliability service of flexible DC power transmission converter valve simultaneously.
Utility model content
The utility model object is to provide a kind of modularization multi-level converter power model with fast insert-pull electrical connection module, solves the problem that DC capacitor and power body cannot be directly separated.
For achieving the above object, the utility model is by the following technical solutions:
A kind of modularization multi-level converter power model with fast insert-pull electrical connection module, include power body, DC capacitor and fast insert-pull electrical connection module, power body is connected by fast insert-pull electrical connection module with DC capacitor, described fast insert-pull electrical connection module comprises DC capacitor side composite bus bar, power block side composite bus bar and is arranged on the connector on DC capacitor side composite bus bar, and connector and power block side composite bus bar are realized socket connection.
Described connector comprises metal holder and contacts hinge, described metal holder employing has flexible metal and makes, on metal holder, offer two flutings, contact hinge forms and arches upward in the middle of being fixed in two flutings, contact hinge is clipped on DC capacitor side composite bus bar by metal holder, and contact hinge is that line contacts while pegging graft with power block side composite bus bar.
Described contact hinge is one group of elastic contact blade that adopts the stacked setting that copper alloy makes, and elastic contact blade outer surface is silver-plated or golden.
In described power body, be provided with IGBT, IGBT Absorption Capacitance, IGBT drive plate, for cooled plate, voltage sensor, the high position of IGBT cooling, getting can power supply, power model control board and power module; On described IGBT, be also provided with output composite bus bar, thyristor assembly and bypass Quick mechanical switch.
Described DC capacitor comprises suspender and external terminal.
The utility model is connected with DC capacitor power body by fast insert-pull electrical connection module, make the electrical connection of the both positive and negative polarity composite bus bar between DC capacitor and power body realize easy to plug, can make DC capacitor and power body directly separated, the carrying out of replacing or service work while facilitating the components and parts such as IGBT in power model, IGBT drive plate, thyristor, power model control board to break down.That described fast insert-pull electrical connection module is installed is simple and easy, save space, and contact resistance is low, Corrosion Protection, installation and repairing are convenient, can meet power model long-time running stability and reliability requirement, thereby reduce the maintenance cost of power model.
Owing to having adopted technique scheme, compared with prior art, the utility model also has following beneficial effect:
Electrical characteristic: low contact resistance, straight electric current wire harness, compare with the connected system being screwed, reduce leakage inductance;
Mechanical property: realize contact automatically cleaning, good vibrationproof characteristic during plug;
Install: easily install, do not need boring or cutting especially; Can even Fast Installation, do not need screw thread, save busbar bottom space, there is no the inverted risk of circuit, reduced installation and maintenance cost.
Accompanying drawing explanation
Fig. 1 is the electrical principle structure chart of power model in the utility model;
Fig. 2 is the power model vertical view with fast insert-pull electrical connection module;
Fig. 3 is the connector structure schematic diagram of fast insert-pull electrical connection module; Fig. 3 (a) is front view; Fig. 3 (b) is right view;
Fig. 4 is the scheme of installation of connector.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
The utility model provides a kind of modularization multi-level converter power model of fast insert-pull electrical connection module, as depicted in figs. 1 and 2, includes power body 1, DC capacitor 2 and fast insert-pull electrical connection module 3.
As shown in Figure 1, in described power body, be provided with IGBT101, IGBT Absorption Capacitance 103, IGBT drive plate 102, cooled plate 104, voltage sensor 105, a high position get can power supply 106, power model control board 107, power module 108 etc.; On described IGBT, be provided with output composite bus bar 15, and relevant thyristor assembly 151 and bypass Quick mechanical switch 152.
As shown in Figure 2, described DC capacitor comprises suspender 21 and terminal 22.Described fast insert-pull electrical connection module comprises DC capacitor side composite bus bar 31, power block side composite bus bar 32 and is arranged on the connector 33 on DC capacitor side composite bus bar 31, and connector 33 is realized socket connection with power block side composite bus bar 32.
As shown in Figure 3, described connector 33 comprises metal holder 331 and contacts hinge 332.Described metal holder employing has flexible metal makes, and its right view is as shown in Fig. 3 (b); On described metal holder, offer two flutings, contact hinge 332 forms to arch upward in the middle of being fixed in two flutings sees 3 (a), then by described metal holder, described contact hinge can be clipped on the composite bus bar of different-thickness.
As shown in Figure 4, described contact hinge can adopt copper alloy through one group of elastic contact blade of specially-shaped, and outer surface is silver-plated or golden, and the contact point of itself and composite bus bar is as shown in A in Fig. 4, and contact hinge 332 is that line contacts during with 32 grafting of power block side composite bus bar.When by electric current, just can form a large amount of free electric current wire harness.Therefore, described contact hinge can make the resistance between DC capacitor side composite bus bar and power block side composite bus bar electric contact piece remain on very low level, also can make the electrical connection of the both positive and negative polarity composite bus bar between DC capacitor and power body realize easy to plug.
The utility model busbar fixing with screw is connected to be compared, and can make inductance and resistance in the electrical connection of DC capacitor and power body significantly reduce.Can be widely used in various complex environments, as large electric current (kA rank), high temperature (350 ℃), high mechanical properties, high plug number of times demand (more than 1,000,000 times).
Finally should be noted that: in conjunction with above-described embodiment, only illustrate that the technical solution of the utility model is not intended to limit.Those of ordinary skill in the field are to be understood that: those skilled in the art can modify or be equal to replacement embodiment of the present utility model, but among the claim protection range that these modifications or change are all awaited the reply in application.

Claims (5)

1. a modularization multi-level converter power model with fast insert-pull electrical connection module, it is characterized in that: include power body (1), DC capacitor (2) and fast insert-pull electrical connection module (3), power body (1) is connected by fast insert-pull electrical connection module (3) with DC capacitor (2), described fast insert-pull electrical connection module comprises DC capacitor side composite bus bar (31), power block side composite bus bar (32) and is arranged on the connector (33) on DC capacitor side composite bus bar (31), and connector (33) is realized socket connection with power block side composite bus bar (32).
2. modularization multi-level converter power model according to claim 1, it is characterized in that: described connector (33) comprises metal holder (331) and contacts hinge (332), described metal holder employing has flexible metal and makes, on metal holder, offer two flutings, contact hinge (332) forms and arches upward in the middle of being fixed in two flutings, it is upper that contact hinge (332) is clipped in DC capacitor side composite bus bar (31) by metal holder, and contact hinge (332) is that line contacts while pegging graft with power block side composite bus bar (32).
3. modularization multi-level converter power model according to claim 2, is characterized in that: described contact hinge (332) is one group of elastic contact blade that adopts the stacked setting that copper alloy makes, and elastic contact blade outer surface is silver-plated or golden.
4. according to the modularization multi-level converter power model described in claim 1-3 any one, it is characterized in that: in described power body, be provided with IGBT (101), IGBT Absorption Capacitance (103), IGBT drive plate (102), for cooled plate (104), voltage sensor (105), the high position of IGBT cooling, getting can power supply (106), power model control board (107) and power module (108); On described IGBT (101), be also provided with output composite bus bar (15), thyristor assembly (151) and bypass Quick mechanical switch (152).
5. according to the modularization multi-level converter power model described in claim 1-3 any one, it is characterized in that: described DC capacitor comprises suspender (21) and external terminal (22).
CN201420334731.5U 2014-06-20 2014-06-20 Modularized multi-level current converter power module with rapid-plugging electric connection component Active CN203911780U (en)

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CN201420334731.5U CN203911780U (en) 2014-06-20 2014-06-20 Modularized multi-level current converter power module with rapid-plugging electric connection component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420334731.5U CN203911780U (en) 2014-06-20 2014-06-20 Modularized multi-level current converter power module with rapid-plugging electric connection component

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106208741A (en) * 2016-08-30 2016-12-07 常州博瑞电力自动化设备有限公司 A kind of soft straight module of separate type based on Mume flower contact
CN106230274A (en) * 2016-08-30 2016-12-14 常州博瑞电力自动化设备有限公司 A kind of detachable power model
CN109149974A (en) * 2017-06-15 2019-01-04 许继集团有限公司 The MMC half-bridge submodule of defencive function after a kind of tube short circuit with upper switch
CN111200374A (en) * 2019-12-26 2020-05-26 中国南方电网有限责任公司超高压输电公司广州局 Power unit secondary circuit topology and method supporting automatic detection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106208741A (en) * 2016-08-30 2016-12-07 常州博瑞电力自动化设备有限公司 A kind of soft straight module of separate type based on Mume flower contact
CN106230274A (en) * 2016-08-30 2016-12-14 常州博瑞电力自动化设备有限公司 A kind of detachable power model
CN109149974A (en) * 2017-06-15 2019-01-04 许继集团有限公司 The MMC half-bridge submodule of defencive function after a kind of tube short circuit with upper switch
CN111200374A (en) * 2019-12-26 2020-05-26 中国南方电网有限责任公司超高压输电公司广州局 Power unit secondary circuit topology and method supporting automatic detection

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: XI AN XIDIAN POWER SYSTEM CO., LTD.

Effective date: 20141208

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20141208

Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7

Patentee after: China XD Electronic Corporation

Patentee after: Xi'an Xidian Power System Co., Ltd.

Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7

Patentee before: China XD Electronic Corporation