CN203086234U

CN203086234U - Total-station automatic throw-in equipment of emergency power supply

Info

Publication number: CN203086234U
Application number: CN 201320059230
Authority: CN
Inventors: 李全意
Original assignee: Zhengzhou Electric Power College
Current assignee: Zhengzhou Electric Power College
Priority date: 2013-02-03
Filing date: 2013-02-03
Publication date: 2013-07-24
Anticipated expiration: 2023-02-03

Abstract

The utility model discloses a total-station automatic throw-in equipment of an emergency power supply. The total-station automatic throw-in equipment of the emergency power supply includes a single-chip microprocessor. The single-chip microprocessor is connected with a keyboard, a display and a power module. Voltage of high-voltage sides and low-voltage sides of a No.1 transformer and a No.2 transformer, voltage of an inlet wire 1 and an inlet wire 2, current of the inlet wire 1 and the inlet wire 2, current of low-voltage sides of the No.1 transformer and the No.2 transformer, current of a high-voltage-side inner bridge and segmented current of a low-voltage side are input to the single-chip microprocessor respectively through an analog input circuit. Position signals of circuit breakers, blocking signals of outlets of protective relays of the No. 1 transformer and the No.2 transformer and external blocking signals are input to the single-chip microprocessor through an on-off input circuit. The single-chip microprocessor controls the switching-on and the switching-off of the corresponding circuit breakers respectively through an on-off output circuit. The total-station automatic throw-in equipment of the emergency power supply provided by the utility model adopts two channels of power sources for supplying power. When one channel of the power sources breaks down, the other channel of the power source is thrown in automatically. The switching speed is high and power failure time can be reduced effectively.

Description

Full standing posture automatic throw-in equipment of emergency power supply

Technical field:

The utility model relates to a kind of power supply switching device, particularly relates to a kind of full standing posture automatic throw-in equipment of emergency power supply.

Background technology:

Along with rapid development of economy, enterprises and institutions are increasing to the demand of electric power, and require the stable and lasting of supply of electric power, in the important electric unit of using, generally all adopt duplicate supply, when one road power supply breaks down, need switch to another power supply fast, reduce the power interruptions time as far as possible, if adopt manual switchover, just need to interrupt certain power-on time, this brings some inconvenience to production; In addition, the stand-by power supply of the transformer station of internal bridge drops into automatically and adopts the two-part control mode at present, respectively high-pressure side and low-pressure side is controlled, and cost is higher, and the operation sequence complexity, and it is long to start the response time.

The utility model content:

Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of reasonable in design, automatic switchover, switching time is short and the full standing posture automatic throw-in equipment of emergency power supply of good reliability.

The technical solution of the utility model is: a kind of full standing posture automatic throw-in equipment of emergency power supply; contain single-chip microcomputer; described single-chip microcomputer respectively with keyboard; display is connected with power module; the voltage of 1# transformer and 2# transformer high-voltage side and low-pressure side; the electric current of the voltage of inlet wire 1 and inlet wire 2 and inlet wire 1 and inlet wire 2; the low-pressure side electric current of 1# transformer and 2# transformer; the electric current of bridge in the high-pressure side; the low-pressure side segmented current is imported described single-chip microcomputer respectively by simulated measurement input circuit; the position signalling of each circuit breaker; the protection relay outlet and the outside block signal of 1# transformer and 2# transformer are imported described single-chip microcomputer by the switching value input circuit, and described single-chip microcomputer is controlled the combined floodgate or the tripping operation of respective circuit breakers respectively by the switching value output circuit.

Described single-chip microcomputer is by communication interface circuit and comprehensive being connected from systematic communication network.Described single-chip microcomputer is connected with indicator light.

The beneficial effects of the utility model are:

1, the utility model adopts the double loop power supply power supply, and when one road power supply broke down, another road power supply dropped into automatically, and its switching speed is fast, effectively reduces interruption duration.

On high-tension side testing results such as 2, the utility model response time weak point, low-pressure side control do not need can be carried out, the efficient height, and cost is lower in addition, reduces the operation costs of transformer station.

3, the utility model is a Mathematical Modeling with full transforming plant primary system, is different from other device and only limits to a electric pressure in transformer station high-pressure side, the low-pressure side, uses more comprehensively.

4, the utility model can be discerned full transformer station main electrical scheme operational mode automatically, can adapt to the various fortune of transformer station

Line mode and do not need special customization only drops into automatically with the stand-by power supply that a table apparatus is finished full transformer station, reduces investment outlay.

5, the utility model does not exist high-pressure side, low-pressure side operation time limit matching problem, has accelerated the speed of cutting thoroughly, guarantees the reliability of load power supply better.

6, reasonable in design, the automatic switchover of the utility model, switching time is short and good reliability, it is applied widely, is particularly useful for the transformer station of internal bridge, is fit to all occasions of open loop operation of transformer station internal bridge high-pressure side, low-pressure side, be easy to promotion and implementation, have good economic benefit.

Description of drawings:

Fig. 1 is transformer station's main wiring diagram of internal bridge;

Fig. 2 is the hardware structure diagram of full standing posture automatic throw-in equipment of emergency power supply;

Fig. 3 is the main program flow chart of full standing posture automatic throw-in equipment of emergency power supply;

Fig. 4 is the block diagram of mode 1 handling procedure among Fig. 3;

Fig. 5 is the block diagram of mode 4 handling procedures among Fig. 3.

Embodiment:

Embodiment: referring to Fig. 1-Fig. 5, among the figure, the 1-single-chip microcomputer, 2-power module, 3-are combined from systematic communication network, 4-indicator light, 5-keyboard, 6-display.

Full standing posture automatic throw-in equipment of emergency power supply contains single-chip microcomputer 1; single-chip microcomputer 1 respectively with keyboard 5; display 6 is connected with power module 2; the high-pressure side of 1# transformer 1T is connected with the power supply of inlet wire 1 by 1# high-pressure side circuit breaker 1QF; the low-pressure side of 1# transformer 1T is connected with low voltage equipment by 1# low-pressure side circuit breaker 4QF; the high-pressure side of 2# transformer 2T is connected with the power supply of inlet wire 2 by 2# high-pressure side circuit breaker 2QF; the low-pressure side of 2# transformer 2T is connected with low voltage equipment by 2# low-pressure side circuit breaker 5QF; be connected by high-pressure side circuit breaker 3QF between the high-pressure side of 1# transformer 1T and the high-pressure side of 2# transformer 2T; be connected by low-pressure side circuit breaker 6QF between the low-pressure side of 1# transformer 1T and the low-pressure side of 2# transformer 2T; the voltage of 1# transformer 1T and 2# transformer 2T high-pressure side and low-pressure side; the electric current of the voltage of inlet wire 1 and inlet wire 2 and inlet wire 1 and inlet wire 2; the low-pressure side electric current of 1# transformer 1T and 2# transformer 2T; the electric current of bridge in the high-pressure side; the low-pressure side segmented current is imported single-chip microcomputer 1 respectively by simulated measurement input circuit; the position signalling of each circuit breaker; the protection relay outlet of 1# transformer 1T and 2# transformer 2T and outside block signal are by switching value input circuit input single-chip microcomputer 1, and single-chip microcomputer 1 is controlled the combined floodgate or the tripping operation of respective circuit breakers respectively by the switching value output circuit.

As required, single-chip microcomputer 1 is connected from systematic communication network 3 with comprehensive by communication interface circuit.Single-chip microcomputer 1 is connected with indicator light 4.

Each U among Fig. 2; I is from each TV among Fig. 1; the electric current of TA secondary side and voltage; K1 among Fig. 2; signals such as K2 are external switch amount signals; the position signalling that comprises each circuit breaker among Fig. 1; 1# and the protection of 2# transformer depressor (comprise main protection; the high-pressure side backup protection; the low-pressure side backup protection) relay outlet; outside block signal (comprises AAT device input; change over switch out of service; brace; the outlet of some protection etc.); the analog quantity of 1 pair of input of single-chip microcomputer; switching value is calculated; be used for logic determines after the processing; when meeting startup and action logic; send tripping operation by the switching value output circuit; close a floodgate and order, and send alarm signal.Communication interface circuit is used for the information exchange between single-chip microcomputer 1 and the comprehensive automation system of transformer substation.The 220V that power module 2 provides the outside exchanges or DC power supply is converted to protective device work required voltage.

The groundwork logic of patent device (being called for short AAT) is finished by main program and five mode handling procedures, and main program block diagram as shown in Figure 3; Mode 1 handling procedure block diagram as shown in Figure 4,

mode

2,3 handling procedures are similar to mode 1; Mode 4 handling procedure block diagrams as shown in Figure 4, mode 5 handling procedures are similar to mode 4.Each operational mode, entry condition and its working principles are as shown in table 1 among Fig. 3, Fig. 4.

Table 1

The identification of operational mode described in the table 1 is to realize by the situation that monitors each relative breaker position signalling, 1TA～4TA secondary side current in the transformer station; The judgement of each entry condition is to protect actuating signal, the variation of each branch current, the variation of circuit breaker position, the variation of each busbar voltage to finish realization by monitoring that each is correlated with.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. full standing posture automatic throw-in equipment of emergency power supply; contain single-chip microcomputer; described single-chip microcomputer respectively with keyboard; display is connected with power module; it is characterized in that: the voltage of 1# transformer and 2# transformer high-voltage side and low-pressure side; the electric current of the voltage of inlet wire 1 and inlet wire 2 and inlet wire 1 and inlet wire 2; the low-pressure side electric current of 1# transformer and 2# transformer; the electric current of bridge in the high-pressure side; the low-pressure side segmented current is imported described single-chip microcomputer respectively by simulated measurement input circuit; the position signalling of each circuit breaker; the protection relay outlet and the outside block signal of 1# transformer and 2# transformer are imported described single-chip microcomputer by the switching value input circuit, and described single-chip microcomputer is controlled the combined floodgate or the tripping operation of respective circuit breakers respectively by the switching value output circuit.

2. full standing posture automatic throw-in equipment of emergency power supply according to claim 1 is characterized in that: described single-chip microcomputer is by communication interface circuit and comprehensive being connected from systematic communication network.

3. full standing posture automatic throw-in equipment of emergency power supply according to claim 1 and 2, it is characterized in that: described single-chip microcomputer is connected with indicator light.