CN202486585U

CN202486585U - Transformer air cooling control device

Info

Publication number: CN202486585U
Application number: CN2011205670938U
Authority: CN
Inventors: 张杭; 严结实; 刘吕娜
Original assignee: China XD Electric Co Ltd
Current assignee: Xi'an XD Automated Control System Co., Ltd.
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-10-10
Anticipated expiration: 2021-12-20

Abstract

The utility model provides a transformer air cooling control device, which comprises a 4-20mA analog quantity collection module, a power module, a CPU (Central Processing Unit) control module, an incoming quantity collection module, an outgoing quantity output module, a communication module and an LED (Light Emitting Diode) lamp display module. Analog values of the load current, top layer oil temperature, and winding temperature of the transformer are respectively transmitted to the 4-20mA analog quantity collection board; the collected data are then transmitted by the 4-20mA analog quantity collection board to the CPU control module via a bus and then transmitted through the communication module to a background device via Ethernet or RS485; status quantities of relay states of each fan and air-switch and phase-loss of the fan and the like of the transformer air cooling system are sent to an incoming plate collection board, and then sent to the CPU control module via a CAN (Controller Area Network) bus; and the LED lamp display module is connected with the CPU control module through the CAN bus plate, indicating the monitoring status of the transformer air cooling system and alarming.

Description

A kind of transformer wind cooling controller

Technical field

The utility model belongs to the field of intelligent control technology of high-power transformer, relates to a kind of transformer wind cooling controller.

Background technology

At present; The main-transformer of domestic 220kV and above transformer station generally adopts the forced-oil-air cooling type of cooling, and the device of control main transfer wind cooling system still adopts contact relays such as contactor, auxiliary reclay and the time relay to realize the logic control to cooling system input or cut-out mostly.Though the automatic control function of ability implementation part, function is imperfection very, can not adapt to the unmanned requirement of intelligent grid.Particularly cooling device still adopts the cable hard connecting mode with being connected of external device (ED), does not have the network communication function, makes substation operation collection control center can not monitor the duty and the failure condition of main transfer wind cooling system in real time.

The applicant utilizes Power Electronic Technique and embedded technology to design a kind of transformer wind cooling controller with reference to " Power Electronic Technique ", " design of embedded system ".This device adopts

microprocessor to accomplish collection, computing, processing and the multichannel communication multiple telecommunication of relevant analog quantity, uses highly integrated fpga chip to guarantee to split into amount, left the real-time control of relay logic; Simplify circuit and connect, save a large amount of cables, satisfy the demand of intelligent grid.

The utility model content

The utility model provides a kind of safe and reliable, economic, real-time transformer wind cooling controller.

The technical scheme that the utility model adopted is:

A kind of transformer wind cooling controller; Comprise that 4-20mA analog acquisition plate, power module, the CPU control module of the analog quantity of the load current, top-oil temperature and the winding temperature that are used to gather transformer, the every typhoon machine relay status, the blower fan sky that are used to gather Transformer Forced-Air Cooling System are opened, the opening of non-full-phase state amount into amount collection plate, the amount of leaving output board, communication module and LED lamp display module; Wherein, Said 4-20mA analog acquisition plate, open into amount collection plate, the amount of leaving output board, communication module and all link to each other with the CPU control module through bus board, display module such as said LED and power module are connected on the bus board.

Said communication module links to each other with background devices through Ethernet interface or RS485 mode;

Said 4-20mA analog acquisition plate includes 4 road temperature acquisition passages, and each acquisition channel all directly inserts the 4-20mA analog quantity of Pt100 or the output of Cu50 temperature sensor, supports directly to insert the direct current signal of transmitter interface output simultaneously.

The utility model transformer wind cooling controller has the following advantages at least: the utility model has reduced contact relay devices such as contactor in original control loop, relay, and the volume of device own is less, has saved the volume of transformer body cabinet.Save cable, wiring is simple, and reliability is improved, can change according to transformer load, the gentle winding of transformer oil changes, and the real time altering rotation speed of fan, saves energy not only, noise-decreasing, and can prolong transformer's life span, reached desirable effect.

Description of drawings

Fig. 1 is the theory diagram of the utility model transformer wind cooling controller.

Embodiment

Below in conjunction with accompanying drawing the utility model transformer wind cooling controller is done detailed description:

See also shown in Figure 1ly, a kind of transformer wind cooling controller comprises 4-20mA analog acquisition plate, power module, CPU control module, opens into amount collection plate, the amount of leaving output board, communication module and LED lamp display module.The analog value of the load current of transformer, top-oil temperature and winding temperature is transferred to 4-20mA analog acquisition plate respectively; 4-20mA analog acquisition plate sends to the CPU control module with image data through bus form again, is transferred to background devices through communication module with Ethernet or RS485 mode then; Every typhoon machine relay status of Transformer Forced-Air Cooling System, blower fan sky are opened, the non-full-phase state amount sends to and opens into the amount collection plate, send to the CPU control module through the CAN bus then; LED lamp display module links to each other with the CPU control module through the CAN bus board, and the monitoring situation of indication Transformer Forced-Air Cooling System is also reported to the police.

Said each analogue collection module has 4 road temperature acquisition passages; Each acquisition channel all can directly insert the 4-20mA analog quantity of Pt100 or Cu50 temperature sensor output; Also support simultaneously directly to insert direct current signals such as 0-5V that the transmitter interface exports, 0-10V, 4-20mA, 0-10mA, its measuring accuracy all can reach 0.1 grade.

Said each open into the amount acquisition module and support 5 the tunnel to open into the amount passage, device is supported 80 way switch quantitative change position remote signalling altogether, switching value is that 220V/110V photoelectricity is isolated input, but opens into the anti-time program setting, each state of safe and reliable supervision air cooling system trembled.

The utility model device is supported 22 road amounts of leaving passage altogether, the failure message of the exportable every typhoon machine of the amount of leaving output board, blower fan full cut-off information and self-check of device information, steering logic flexibility and reliability.

Each analog acquisition passage can connect the output terminal of transformer top-oil temperature sensor, winding temperature sensor.The multiple sensor output terminal is received the input end of analogue collection module, and data link to each other with the CPU control module through bus mode through corresponding processing, calculating.The CPU control module is calculated, is reduced it after receiving image data; Send to background devices through the MODUBUS agreement on the one hand; Send to display module through the CAN bus mode on the other hand, in order to the real-time monitoring situation of information such as the top-oil temperature that shows transformer, winding temperature; Each is opened into the amount passage can insert the switching value that 220V/110V photoelectricity is isolated input; Link to each other with the CPU control module through bus mode; The CPU control module is handled it after receiving data; Send to background devices through the MODUBUS agreement on the one hand, send to display module through the CAN bus mode on the other hand, in order to show monitoring situation such as each fan operation mode and state in the air cooling system.

Communication module as shown in Figure 1 is connected through bus board with the CPU control module.Communication module comprises 1 ethernet communication interface and 2 RS485 communication interfaces, according to the communication protocol that defines in advance the Transformer Forced-Air Cooling System real-time status that monitors is delivered to background devices.

The utility model LED lamp display module links to each other with the CPU control module through the CAN bus.The CPU control module is opened into the information of amount according to analog quantity such as the transformer top-oil temperature that collects, winding temperature and the method for operation, control mode etc. and is made judgement in the operational process; The result who judges is shown through LED lamp display module, make the field operator intuitively to observe.The LED lamp display module of the utility model always has 36 LED lights: work, communication, alarm indicator and 18 malfunction indicator lamp.Wherein relay indicating light is respectively applied for the indication of air cooling system dual power supply switch mode and the indication of two groups of blower fan switch modes; The communication pilot lamp is used for the indication of the communication mode on this device and backstage; Alarm indicator is used for the ultra threshold alarm indication of analog signals, and 18 malfunction indicator lamp are represented the failure condition of each blower fan, oil pump respectively.

The above is merely a kind of embodiment of the utility model; It or not whole or unique embodiment; The conversion of any equivalence that those of ordinary skills take the utility model technical scheme through reading the utility model instructions, the claim that is the utility model contains.

Claims

1. transformer wind cooling controller; It is characterized in that: comprise that 4-20mA analog acquisition plate, power module, the CPU control module of the analog quantity of the load current, top-oil temperature and the winding temperature that are used to gather transformer, the every typhoon machine relay status, the blower fan sky that are used to gather Transformer Forced-Air Cooling System are opened, the opening of non-full-phase state amount into amount collection plate, the amount of leaving output board, communication module and LED lamp display module; Wherein, Said 4-20mA analog acquisition plate, open into amount collection plate, the amount of leaving output board, communication module and all link to each other with the CPU control module through bus board, display module such as said LED and power module are connected on the bus board.

2. a kind of transformer wind cooling controller as claimed in claim 1 is characterized in that: said communication module links to each other with background devices through Ethernet interface or RS485 mode.

3. a kind of transformer wind cooling controller as claimed in claim 1; It is characterized in that: said 4-20mA analog acquisition plate includes 4 road temperature acquisition passages; Each acquisition channel all directly inserts the 4-20mA analog quantity of Pt100 or the output of Cu50 temperature sensor, supports directly to insert the direct current signal of transmitter interface output simultaneously.