CN2718637Y

CN2718637Y - Pre-payment electric charge circuit-breaking control device

Info

Publication number: CN2718637Y
Application number: CN 200420025788
Authority: CN
Inventors: 闫朝斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-25
Filing date: 2004-03-25
Publication date: 2005-08-17
Anticipated expiration: 2014-03-25

Abstract

The utility model provides a pre-payment electric charge circuit-breaking control device, comprising a breaker and a logic control device. The wire outlet terminal of the breaker is provided with a current mutual inductor with two subclasses. One is a winding used for the protection and the other one is a winding used for the metering. Two voltage mutual inductors with a high-voltage fuse protection are arranged in the box body of the breaker. The voltage mutual inductor is provided with two secondary windings. One winding is 100V and is used for the measuring and the other winding is 220V and is used for providing operational power supply. The logic control device is provvided with a pre-payment electric meter, a programmable controller connected with the pre-payment electric meter through an open-closed-open button, an alarm lamp and an alarm bell. The alarm lamp and the alarm bell are connected with the wire outlet terminal of the programmable controller. The programmable controller is connected with the open-closed-open circuit of the breaker through a connecting wire. The control adopts a logic control system which is combined by a pre-payment watthour meter and the programmable controller. The pre-payment electric charge circuit-breaking control device is simple and reliable. The assembly of the system is compact. The installation is easy. The logical process is not easily intervened. The pre-payment electric charge circuit-breaking control device can be provided with a phantom wire. The recovery rate of electricity cost of electric supply departments is greatly enhanced.

Description

The prepayment electric expense control device that opens circuit

Technical field

The utility model relates to a kind of automaton of High-Voltage Electrical Appliances, and control device opens circuit on particularly a kind of prepayment electric expense 10KV post.

Background technology

In the existing technology; existing invention is that pole-mounted circuit breaker and external voltage mutual inductor are combined; voltage transformer (VT) provides operating power and metered voltage; isolating switch possesses metering and protects two function current transformers, and logic control partly is the control module that the auxiliary reclay and the time relay are combined into.Its weak point is: isolating switch will add anti-illegal switching-on mechanism, and is complicated; Voltage transformer (VT) is external, and antifouling rank deficient can produce mistake and charge or maloperation; Logic control element is made of simple components, and is more transparent, and general personnel can see circuit structure and logic clearly, can juggle things to circuit, easily causes prepayment electric expense electricity consumption hope to become empty, promptly makes people's power stealing succeed.

Summary of the invention

The technical problems to be solved in the utility model is at the deficiencies in the prior art, has proposed the control device that opens circuit on a kind of prepayment electric expense 10KV post, and its use can improve the recovery of the power supply department electricity charge greatly, brings enormous benefits to power supply department.

The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of prepayment electric expense control device that opens circuit, it comprises logic control device under pole-mounted circuit breaker and the post, be characterized in: the current transformer that isolating switch leading-out terminal tool band is two secondary group, one is the current transformer of protection with winding, and another is the current transformer of metering with winding; Described isolating switch both-end respectively is connected with a voltage transformer (VT), voltage transformer (VT) possesses two secondary winding, a winding is the 100V that is used to measure, another winding is for being used to provide the 220V of operating power, described logic control device be provided with pre-paying kilowatt-hour meter, with pre-paying kilowatt-hour meter by a deciliter button be connected with Programmable Logic Controller, the Programmable Logic Controller leading-out terminal also is connected with stand by lamp and alarm bell, Programmable Logic Controller is connected with a deciliter loop by lead.Programmable Logic Controller is used to judge that the pre-paying kilowatt-hour meter signal alarms or trip.Before not paying dues, Programmable Logic Controller keeps the closing circuit tripped condition always, and closing circuit fully must not, even closing by hand, because isolating switch is the both-end inlet wire, voltage transformer (VT) always have one charged, control power supply 220V can keep the trip(ping) circuit tripped condition.

Compared with prior art, control of the present utility model adopts pre payment watthour meter and Programmable Logic Controller to be combined into logic control system, advantage of the present utility model: 1) breaker operation mechanism need not add mechanism in addition with existing mechanism, and is simple and reliable; 2) voltage transformer (VT) places breaker body inside, antifouling grade height; 3) system in combination compactness is very easily installed; 4) logic control element PLC, logical process are difficult for intervening, and pseudo-line can be set, and stop stealing.

Technique effect: power supply department is promoted better, because of general electrician dare not move the 10KV system equipment, adds and has set certain anti-stealing electricity function, and the malice owing electricity charges is stopped, and improves the power supply department electricity charge recovery greatly, brings huge efficient to power supply department.

Description of drawings

Fig. 1 is a logic control device elementary diagram of the present utility model.

Fig. 2 is the once figure of isolating switch line attachment.

Fig. 3 is two voltage transformer (VT) wiring diagrams.

Fig. 4 is a deciliter circuit wiring diagram.

Fig. 5 is the current transformer holding circuit wiring diagram of isolating switch.

Fig. 6 is the wiring diagram of voltage transformer (VT) metered voltage winding (100V).

Fig. 7 provides the wiring diagram of operating power winding (220V) for voltage transformer (VT).

Fig. 8 is current transformer metering winding connection figure.

Embodiment

A kind of prepayment electric expense control device that opens circuit, it comprises logic control device under pole-mounted circuit breaker 6 and the post, isolating switch is the spring device operation, the electric and hand energy storage is dual-purpose, the

current transformer

9,10 that isolating switch 6 leading-out terminal tool bands are two secondary group, one is the current transformer 9 of protection with winding, and another is the current transformer 10 of metering with winding; Described isolating switch both-end respectively is connected with a voltage transformer (VT) 7,8, voltage transformer (VT) possesses two

secondary winding

12,13, the 100V of winding 12 for being used to measure, another winding 13 is for being used to provide the 220V of operating power, described logic control device be provided with pre-paying kilowatt-hour meter 1, with pre-paying kilowatt-hour meter 1 by deciliter button 2 be connected with Programmable Logic Controller 5, Programmable Logic Controller 5 leading-out terminals also are connected with stand by lamp 3 and alarm bell 4, Programmable Logic Controller 5 is connected with deciliter loop 11 by lead.

Embodiment of the present utility model is based on existing box 10KV pole vacuum isolating switch (ZW6 or ZW8 etc.), casing is strengthened, two voltage transformer (VT) are installed in the case, primary side taps into A, the B of line end and B, the C of leading-out terminal respectively, secondary side provides the 220V power supply to use for breaker operator, other provides 100V metering usefulness, and isolating switch leading-out terminal A, C wear two secondary group of winding current mutual inductors, is used for protection and metering;

Control section is made up of the watt-hour meter 1 of being with pre-payment and surplus electric alarm function, PLC Programmable Logic Controller 5, warning lamp 3, alarm bell 4, deciliter button 2 etc.:

Watt-hour meter 1DB measures according to electric current and the voltage signal that isolating switch provides, prescribe a time limit when arriving the following of forward purchasing electric weight, watt-hour meter DB output switching value K1 to PLC, PLC drives the warning lamp alarm, and when the forward purchasing electric weight used up, K2 closed, PLC drives the alarm bell alarm, indication will be tripped, and PLC drives the QT tripping strip and transfers isolating switch after a few minutes, and block HQ closing coil loop.

Before not paying dues, the K2 of DB does not reset, and PLC keeps closing circuit TQ tripped condition always, closing circuit HQ fully must not be electric, though closing by hand, because isolating switch is the both-end inlet wire, voltage transformer (VT) always have one charged, control power supply 220V can keep trip(ping) circuit TQ tripped condition.

After paying tariff, K1, the K2 of watt-hour meter DB reset, and PLC removes isolating switch and blocks, and alerting signal is removed, and can send out switching signal by PLC by HA, and HQ gets electric combined floodgate.

Control box sealing, the more difficult intervention of PLC is added and can be gone into end at PLC and add pseudo-line, really can invade in the case if any the people, and pseudo-line is just fixing when mounted, and can every all different, so the effractor does not know moving which single line, power-steeling preventing effect be better.

Engage the annexation that accompanying drawing specifies each end below:

Cable plug HC (1,5,2,7,11,10,12) that Fig. 1 attracts for band IC-card, the ammeter that pre paid functionality is arranged and isolating switch and the wiring diagram of the interior PLC (I1, L, I2) of case, what HC attracted is metering current and metered voltage amount, and K2, K1 forfeit out I1 from the electric weight of purchasing to PLC, I2 respectively will use up and use up signal; In deciliter knob 2, the wiring diagram of switch knob HA and trip button TA is connected with power supply L end, I3, the I4 end of PLC; The wiring diagram of stand by lamp 3HL and electric whistle 4HD, the power supply terminal that HC9 position isolating switch cable purport is come, 2 ends of the Q4 of HL and PLC join, and 2 ends of the Q3 of HD and PLC join; 5 is the PLC Programmable Logic Controller, L, M link to each other with the power supply terminal HC-4 ,-9 that the isolating switch cable attracts respectively, and the secondary power supply 220V of corresponding isolating switch voltage mutual inductor, I1 meet ammeter trip signal K2-4,2 ends of Q2 link to each other with the trip(ping) circuit of isolating switch by HC-8, and I3, I4 connect deciliter knob 2.

Fig. 2 is the once figure of isolating switch line attachment, and DL is the 10KV isolating switch, and PT is the voltage transformer (VT) of isolating switch inside, and LH, 1LH are the current transformer of two secondary winding, insert A, C phase;

Fig. 3 is two voltage transformer (VT) wiring diagrams, a voltage transformer (VT) 1TV connects A, B phase (A1, B1), another voltage transformer (VT) 2TV connects B, the C phase (B2, C2) of the isolating switch other end, wiring can guarantee no matter isolating switch is branch or closes like this, as long as there is an end charged, isolating switch all can obtain the 220V operating power from voltage transformer (VT);

Isolating switch inside is provided with HC (HC-1,2,4,6,7,8,9,10,11,12) and is the cable plug that logic control device is drawn under post,

Fig. 4 is deciliter loop 11, wherein D is an energy storage motor, CK is a limit switch, DL is the isolating switch auxiliary contact, HQ is a closing coil, TQ is a breaking coil, and lead-out terminal HC in deciliter loop 7 (4,6,8) and the access terminal HC (4,6,8) of Programmable Logic Controller PLC join, and the lead-out terminal HC9 that inserts terminal HC9 and Programmable Logic Controller joins;

Fig. 5 connects for the circuit breaker current protection, and 1SLJ, 2SLJ are the current-release coil;

Fig. 6 is that the secondary measurement voltage (A, C, 100V) of two voltage transformer (VT) (1TV, 2TV) is drawn principle by cable plug-in unit HC (5,7,10) to control box;

Fig. 7 is the pick out principle of voltage to another power supply winding (220V) of sensor (1TV, 2TV) secondary side, and electric as long as 1TV gets, auxiliary reclay ZL promptly is in and closes the position, and the ZL normally opened contact closes, the 1TV power supply, and ZL normally closed contact branch, the 2TV power supply is inoperative; Otherwise, the 1TV dead electricity, auxiliary reclay ZL dead electricity has electricity as 2TV, is then powered by 2TV;

Fig. 8 is that A, C phase current mutual inductor secondary measurement electric current pick out principle by cable plug HC (1,2,11,12) to control box;

Claims

1. prepayment electric expense control device that opens circuit, it comprises logic control device under pole-mounted circuit breaker (6) and the post, it is characterized in that: the current transformer (9,10) that isolating switch (6) leading-out terminal tool band is two secondary group, one is the current transformer (9) of protection with winding, and another is the current transformer (10) of metering with winding; Described isolating switch both-end respectively is connected with a voltage transformer (VT) (7,8), voltage transformer (VT) possesses two secondary winding (12,13), the 100V of a winding (12) for being used to measure, another winding (13) is for being used to provide the 220V of operating power, described logic control device be provided with pre-paying kilowatt-hour meter (1), with pre-paying kilowatt-hour meter (1) by a deciliter button (2) be connected with Programmable Logic Controller (5), Programmable Logic Controller (5) leading-out terminal also is connected with stand by lamp (3) and alarm bell (4), Programmable Logic Controller (5) is connected with a deciliter loop (11) by lead.