CN204154799U - Based on the DC wave recording device of relay-set - Google Patents

Abstract

The utility model relates to a kind of DC wave recording device based on relay-set; comprise: A phase operation voltage current sample plate monitors main track by exit potential, exit potential monitors exit relay anode, the exit relay negative terminal that negative wire is connected in parallel on tripping operation exit relay; be connected on breaking coil, coil negative terminal by breaking coil monitoring negative wire, gather cable by tripping current and be connected to outer being stuck on the external clamping type current transformer that connects and to connect between connection terminal, exit relay anode on electric wire.The utility model is used for the electric current of Real-Time Monitoring protective relaying device outlet and the DC voltage at breaking coil two ends in the inside of direct-current cabinet; and the electric current in 10 seconds before tripping operation and trip operation 15 seconds and information of voltage can be written in storer and form permanent log file and form two kinds of pilot lamp that operation voltage is too low, tripping current is too small; there is the laggard important references acted when event analytical work is carried out for fault, there is ease for use and accuracy.

Description

Based on the DC wave recording device of relay-set

Technical field

The utility model relates to a kind of wave recording device, particularly a kind of DC wave recording device based on relay-set.

Background technology

Straight-flow system is applied to waterpower, fuel-burning power plant; all kinds of transformer station and other use the user of DC equipment, for giving signalling arrangement, protection, aut.eq., emergency lighting, emergency power pack and isolating switch divides, closing operation provides direct supply power-supply device.Straight-flow system is an independently power supply, and it by the impact of generator, generating plant electricity consumption and system operation mode, and when outside alternating current interrupts, ensures by back-up source---accumulator continues to provide the visual plant of direct supply.Present straight-flow system is primarily of rectification module system, supervisory system, insulating monitoring unit, battery inspection unit, switching value unit, pressure unit, power supply unit composition.

Relay protection is the first line of defence of generally acknowledged power network safety operation, and the basic function of relay protection is the breaking coil work making switch when grid collapses.The moment of switch trip has very large electric current, and far beyond the direct current deliverability of battery charger, the electric discharge completely by battery pack meets.Battery pack is after the certain time limit of operation, because its internal resistance is risen, safeguarded the reasons such as improper, often cause discharge capability not enough, the external voltage of electric discharge declines, and then cannot the breaking coil of driving switch, can cause a series of strange phenomenon of the failure, trip as do not made the three-phase of switch even makes coil cause can not trip because of undercurrent simultaneously, and then cause more serious electric network fault, affect power supply safety.

Utility model content

Technical problem to be solved in the utility model is as why not changed existing, ripe Substation secondary circuit, not increasing new trouble spot, realizes the key issue to the operation voltage of circuit breaker trip coil and the supervision of action current and record.

For this purpose, the utility model proposes a kind of DC wave recording device based on relay-set, comprising:

A phase trip signal is opened and is opened and open into plate, A phase operation voltage current sample plate, B phase operation voltage current sample plate, C phase operation voltage current sample plate, GOOSE interface, MMS interface into plate, B phase trip signal into plate, C phase trip signal;

Panel is arranged the too low pilot lamp of A phase action current, the too low pilot lamp of B phase action current, the too low pilot lamp of C phase action current, the too low pilot lamp of A phase operation voltage, the too low pilot lamp of B phase operation voltage, the too low pilot lamp of C phase operation voltage, pilot lamp involution button, data arrange touch-screen;

Wherein, described A phase operation voltage current sample plate monitors main track by exit potential, exit potential monitors exit relay anode, the exit relay negative terminal that negative wire is connected in parallel on tripping operation exit relay, be connected on breaking coil, coil negative terminal by breaking coil monitoring negative wire, gather cable by tripping current and be connected to outer being stuck on the external clamping type current transformer that connects and to connect between connection terminal, exit relay anode on electric wire.

Particularly, when protective relaying device does not export trip command, described external clamping type current transformer can't detect the current signal flowing through tripping operation exit relay.

Particularly, when protective relaying device exports trip command, tripping operation exit relay closes, and breaking coil trips, and described external clamping type current transformer detects that flowing through tripping operation exit relay current signal increases.

Particularly, when recording ripple and carrying out, the too low pilot lamp of arbitrary to A, B, C mutually corresponding action current lower than preset value, is then lighted by the action current of the arbitrary phase coil of A, B, C, until press pilot lamp involution button.

Particularly, when recording ripple and carrying out, the too low pilot lamp of arbitrary to A, B, C phase operation voltage lower than preset value, is then lighted by the voltage at the arbitrary phase coil two ends of A, B, C, until press pilot lamp involution button.

A kind of DC wave recording device based on relay-set disclosed in the utility model; the electric current of Real-Time Monitoring protective relaying device outlet and the DC voltage at breaking coil two ends is used in the inside of direct-current cabinet; and the electric current in 10 seconds before tripping operation and trip operation 15 seconds and information of voltage can be written in storer and form permanent log file and form two kinds of pilot lamp that operation voltage is too low, tripping current is too small; there is the laggard important references acted when event analytical work is carried out for fault, there is real-time, high efficiency, ease for use and accuracy.

Accompanying drawing explanation

Can understanding feature and advantage of the present utility model clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the utility model, in the accompanying drawings:

Fig. 1 shows the frame diagram of a kind of DC wave recording device based on relay-set in the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.

As shown in Figure 1, the utility model provides a kind of DC wave recording device based on relay-set.

During existing trip(ping) circuit from operating power positive pole 16 through be connected in series connection terminal 17, exit relay anode 19, tripping operation exit relay 20, exit relay negative terminal 21, breaking coil 22, coil negative terminal 23, be connected to operating power negative pole 24.

A kind of DC wave recording device based on relay-set disclosed in the utility model, this wave recording device is arranged on direct-current cabinet inside, for the electric current of Real-Time Monitoring protective relaying device outlet and the DC voltage at breaking coil two ends.Particularly, comprising: A phase trip signal is opened and opened and open into plate, A phase operation voltage current sample plate 12, B phase operation voltage current sample plate 11, C phase operation voltage current sample plate 10 into plate, B phase trip signal into plate, C phase trip signal; GOOSE interface 32, MMS interface 33; Panel is arranged the too low pilot lamp of A phase action current 4, the too low pilot lamp of B phase action current 5, the too low pilot lamp of C phase action current 6, the too low pilot lamp of A phase operation voltage 14, the too low pilot lamp of B phase operation voltage 13, the too low pilot lamp 9 of C phase operation voltage, pilot lamp involution button 15, data arrange touch-screen 7; A phase operation voltage current sample plate 12 is connected in parallel on exit relay anode 19, the exit relay negative terminal 21 of tripping operation exit relay 20 by exit potential monitoring main track 26, exit potential monitoring negative wire 27, be connected on breaking coil 22 coil negative terminal 23 by breaking coil monitoring negative wire 28, gather cable 25 by tripping current and be connected to outer being stuck on the external clamping type current transformer 18 that connects and to connect between connection terminal 17, exit relay anode 19 on electric wire.

Particularly, external clamping type current transformer 18 triggers DC wave recording, when breaking coil does not work, when namely protective relaying device 31 does not export trip command, the upper outside open type current transformer 18 of this relay-set special DC wave recording device 8 can't detect the current signal flowing through tripping operation exit relay 20, the monitoring in real time always of this relay-set special DC wave recording device also records A phase breaking coil operation voltage electric current in internal memory, B phase breaking coil operation voltage electric current, C phase breaking coil operation voltage electric current, and in calculator memory, preserve each phase voltage current values in nearest 15 seconds.

Particularly; when protective relaying device 31 exports trip command; tripping operation exit relay 20 closes; breaking coil 22 obtains electric work and trips; external clamping type current transformer 18 detects that the current signal flowing through tripping operation exit relay 20 increases suddenly simultaneously; the information of voltage at the electric current in each breaking coil of switch within 15 seconds after front for this moment 10 seconds to this moment and coil two ends is written in disposal reservoir by this relay-set special DC wave recording device, completes the record ripple of the process that once trips.

Further, if find that the action current of A phase coil is lower than preset value in record wave process, then too low for A phase action current pilot lamp 4 is lighted, and keep illuminating state always, until operating personnel press pilot lamp involution button 15; If find that the voltage at A phase coil two ends is lower than preset value in record wave process, then too low for A phase operation voltage pilot lamp 14 is lighted, and keep illuminating state always, until operating personnel press pilot lamp involution button 15.In like manner, if find that the action current of B phase coil is lower than preset value in record wave process, then too low for B phase action current pilot lamp 5 is lighted, and keep illuminating state always, until operating personnel press pilot lamp involution button 15; If find that the voltage at B phase coil two ends is lower than preset value in record wave process, then too low for B phase operation voltage pilot lamp 13 is lighted, and keep illuminating state always, until operating personnel press pilot lamp involution button 15; If find that the action current of C phase coil is lower than preset value in record wave process, then too low for C phase action current pilot lamp 6 is lighted, and keep illuminating state always, until operating personnel press pilot lamp involution button 15; If find that the voltage at C phase coil two ends is lower than preset value in record wave process, then too low for C phase operation voltage pilot lamp 9 is lighted, and keep illuminating state always, until operating personnel press pilot lamp involution button 15.

Further, electric current in 10 seconds before tripping operation and trip operation 15 seconds and information of voltage are written in storer and form permanent log file and form two kinds of pilot lamp that operation voltage is too low, tripping current is too small, for occur for fault laggard act thus analytical work is carried out time important references.

A kind of DC wave recording device based on relay-set disclosed in the utility model; existing, ripe Substation secondary circuit can not be changed; do not increase new trouble spot; realize the operation voltage of circuit breaker trip coil and the supervision of action current and record; not only newly-built plant stand is suitable for, is equally applicable to the existing transformation having dropped into plant stand.The electric current of Real-Time Monitoring protective relaying device outlet and the DC voltage at breaking coil two ends is used in the inside of direct-current cabinet; and the electric current in 10 seconds before tripping operation and trip operation 15 seconds and information of voltage can be written in storer and form permanent log file and form two kinds of pilot lamp that operation voltage is too low, tripping current is too small; there is the laggard important references acted when event analytical work is carried out for fault, there is real-time, high efficiency, ease for use and accuracy.

Although describe embodiment of the present utility model by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations when not departing from spirit and scope of the present utility model, such amendment and modification all fall into by within claims limited range.

Claims (1)

1. the DC wave recording device based on relay-set, it is characterized in that, comprising: A phase trip signal is opened and opened and open into plate, A phase operation voltage current sample plate, B phase operation voltage current sample plate, C phase operation voltage current sample plate, GOOSE interface, MMS interface into plate, B phase trip signal into plate, C phase trip signal;

Panel is arranged the too low pilot lamp of A phase action current, the too low pilot lamp of B phase action current, the too low pilot lamp of C phase action current, the too low pilot lamp of A phase operation voltage, the too low pilot lamp of B phase operation voltage, the too low pilot lamp of C phase operation voltage, pilot lamp involution button, data arrange touch-screen;

Wherein, described A phase operation voltage current sample plate monitors main track by exit potential, exit potential monitors exit relay anode, the exit relay negative terminal that negative wire is connected in parallel on tripping operation exit relay, be connected on breaking coil, coil negative terminal by breaking coil monitoring negative wire, gather cable by tripping current and be connected to outer being stuck on the external clamping type current transformer that connects and to connect between connection terminal, exit relay anode on electric wire.