CN202454945U

CN202454945U - Wind power transformer substation with loss on-line monitoring function

Info

Publication number: CN202454945U
Application number: CN2012200498780U
Authority: CN
Inventors: 王飞
Original assignee: DALIAN ENZE ELECTRICAL APPLIANCES Co Ltd
Current assignee: DALIAN ENZE ELECTRICAL APPLIANCES Co Ltd
Priority date: 2012-02-16
Filing date: 2012-02-16
Publication date: 2012-09-26
Anticipated expiration: 2022-02-16

Abstract

The utility model provides a wind power transformer substation with a loss on-line monitoring function, comprising a box body, a high-voltage room, a transformer room, a low-voltage room, a step-up transformer and a loss on-line monitoring device, wherein the wind power transformer substation is characterized in that the high-voltage room, the transformer room and the low-voltage room are set to be the structure shaped like a Chinese character'MU' or'PIN', the transformer room is arranged in the middle of the transformer in the structure shaped like the Chinese character'MU', the high-voltage room and the low-voltage room are respectively arranged at two sides of the transformer, in the structure shaped like the Chinese character'PIN', the high-voltage room, the low-voltage room and the transformer room are distributed into the structure shaped like the a Chinese character'PIN', the loss on-line monitoring device 6 comprises a low-voltage detecting circuit 601 and a high-voltage detecting circuit 602, the low-voltage detecting circuit 601 is arranged at the high-voltage side of the transformer, and the high-voltage detecting circuit 602 is arranged at the lower-voltage side of the transformer. According to the wind power transformer substation, the status of a transformer in the wind power transformer substation can be timely and efficiently monitored, the problem which possibly occurs when the transformer runs can be conveniently discovered by workers in time, and the running quality of a power system can be improved.

Description

A kind of wind-force transformer station with loss on-line monitoring function

Technical field

The utility model patent relates to a kind of complete controller switching equipment that is used to become distribution power field, relates in particular to a kind of wind-force transformer station with the online measuring ability of loss.

Background technology

Wind-force transformer station; Being also referred to as used for wind power generation prepackage box-type substation, is after a kind of 0.69kV voltage that wind turbine generator is sent is elevated to 40.5kV, the special equipment of the output of being incorporated into the power networks; Generally form, become order font or isosceles triangle to arrange by hyperbaric chamber, transformer room, cable vault and low-pressure chamber.Difference and other generation modes; The annual load value of wind-driven generator is lower generally speaking; This just causes the load factor of wind-powered electricity generation step-up transformer lower, thus the no-load loss of transformer with and running status just become one of key factor of weighing wind generator system efficient; Transformer also is one of equipment important in the electrical network in addition, can its reliability is directly connected to electrical network safely, efficiently, operation economically.And during at present on the market the special-purpose case of wind-powered electricity generation becomes and the monitoring device of corresponding transformer running status useless and parameter thereof, this potential possibility that makes transformer and even whole electric power system produce trouble or failure increases.

Summary of the invention

To the problems referred to above; The utility model provides a kind of wind-force transformer station with loss on-line monitoring function; But it has increased the device of a kind of on-line monitoring transformer noload losses and load loss in original wind-force transformer station, can carry out online detection to electric current and voltage, no-load loss and the load loss of former each phase of secondary of the three-phase transformer in the wind-force transformer station, through the key entry system parameter; And will detect data and write down and store, be convenient to the staff and call and check.

The utility model adopts technical scheme following:

A kind of wind-force transformer station with the online measuring ability of loss; Comprise that casing, hyperbaric chamber, transformer room, low-pressure chamber, step-up transformer and loss on-line measuring device is characterized in that described hyperbaric chamber, transformer room, low-pressure chamber be arranged to " order " word structure or " article " word structure; The transformer room is positioned at the transformer station middle part in " order " word structure; Hyperbaric chamber and low-pressure chamber lay respectively at the transformer both sides; In " article " font structure, hyperbaric chamber, low-pressure chamber and transformer room are article type structure distribution, and described loss on-line measuring device comprises low-pressure side testing circuit and high-pressure side testing circuit; The low-pressure side testing circuit is installed in the transformer high-voltage side, and the high-pressure side testing circuit is installed in step down side.

Described transformer loss on-line measuring device is known product, partly is made up of high and low pressure testing circuit, signal conditioning circuit, A/D convertor circuit, DSP, external memory, liquid crystal display and encoded keyboard.Whole device is a hardware core with the TMS320F206 of a slice TI company, realizes main computing and logical conversion function.Wherein testing circuit is used for the electric current and voltage of measuring transformer first and second side, and gives A/D convertor circuit through signal conditioning circuit with measurable ac small signal, after the AD conversion, obtains digital signal and gives DSP and handle.External memory is used for storing measuring the data of calculating and getting, and keyboard and liquid crystal display are used for data call and check.

Described testing circuit is divided into the testing circuit of primary side and secondary side.Comprise voltage transformer, current transformer and phase compensation link.

Described signal conditioning circuit is mainly realized through operational amplifier and peripheral circuit thereof.

Described AD conversion portion adopts two AD77360 chips and DSP to join.

Described external memory storage adopts NVSRAMDS1230 to come to join with DSP.

Described LCD LCDs adopts SED1135, and its interface with DSP only needs the pin function by LCD to define to be connected to the corresponding pin of microprocessor to get final product.

Described keyboard circuit adopts the INTEL8279 interface circuit; 8279 data wire D0-D7 and the data wire of DSP directly join, and interrupt request singal connects the DSPIO2 pin, and A0 links to each other with IO3; Chip selection signal CS and LCDCS join, and institute's keyboard that connects adopts 4 * 4 matrix keyboards.

The major advantage of the utility model:

The utility model can effectively be monitored the state of transformer in the wind-force transformer station in real time, and off-line type detection mode relatively in the past greatly facilitates the staff and in time finds the transformer problem that possibly occur in service, improves the power system operation quality.

Description of drawings

Fig. 1 is wind-force substation structure figure.

Fig. 2 is a loss on-Line Monitor Device circuit diagram.

Fig. 3 is keyboard and demonstration sketch map.

Embodiment

With reference to accompanying drawing, a kind of wind-force transformer station with the online measuring ability of loss comprises casing 1, hyperbaric chamber 2, transformer room 3, low-pressure chamber 4, step-up transformer 5 and loss on-line measuring device 6 compositions.Wherein hyperbaric chamber, transformer room, low-pressure chamber become " order " autotype to arrange.On-line measuring device is arranged in low-pressure chamber; Being convenient to the staff checks and uses; Loss on-line measuring device 6 comprises low-pressure side testing circuit 601 and high-pressure side testing circuit 602, and low-pressure side testing circuit 601 is installed in the transformer high-voltage side, and high-pressure side testing circuit 602 is installed in step down side.

Low-pressure side testing circuit 601 and high-pressure side testing circuit 602; Its voltage sampling circuit adopts the milliampere level accurate voltage mutual inductor of current mode; Current sampling circuit adopts accurate current transformer; Low-pressure side testing circuit 601 and high-pressure side testing circuit 602 both output and compensating circuit join, and compensator output and signal conditioning circuit 603 join.

Signal conditioning circuit 603 adopt discharge circuits with and peripheral circuit realize final voltage, current signal conditioning process.Signal after the conditioning exports AD conversion 604 links to.

604 parts of changing AD adopt 2 AD77360 to carry out cascade, and wherein SDO, SDFOS join with the middle SDI of AD77360 (2), SDIFS respectively among the AD77360 (1), and output and DSP after the cascade join.The AD conversion portion is intended to become the exact figure signal to pass to DSP the analog signal conversion of upper level.

LCD shows that 607 parts adopt liquid crystal indicator SED1135, and direct and DSP joins, and its interface only need be connected to the corresponding pin of microprocessor by the pin function definition of LCD and get final product.

Keyboard circuit 608 adopts the INTEL8279 interface circuit, and 8279 data wire D0-D7 and the data wire of DSP directly join, and interrupt request singal connects the DSPIO2 pin, and A0 links to each other with IO3, and chip selection signal CS and LCDCS join, and institute's keyboard that connects adopts 4 * 4 matrix keyboards.

In an instance shown in Figure 4, when the detection data of transformer are called and checked in need be to transformer station, can import the required time point of checking through digital keys, carry out data through button up and down then and check.

Claims

1. wind-force transformer station with the online measuring ability of loss; Comprise casing, hyperbaric chamber, transformer room, low-pressure chamber, step-up transformer and loss on-line measuring device; It is characterized in that described hyperbaric chamber, transformer room, low-pressure chamber be arranged to " order " word structure or " article " word structure; The transformer room is positioned at the transformer station middle part in " order " word structure, and hyperbaric chamber and low-pressure chamber lay respectively at the transformer both sides, in " article " font structure; Hyperbaric chamber, low-pressure chamber and transformer room are article type structure distribution; Described loss on-line measuring device (6) comprises low-pressure side testing circuit (601) and high-pressure side testing circuit (602), and low-pressure side testing circuit (601) is installed in the transformer high-voltage side, and high-pressure side testing circuit (602) is installed in step down side.