CN205581269U - Transformer substation relay protection exports detection device - Google Patents
Transformer substation relay protection exports detection device Download PDFInfo
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- CN205581269U CN205581269U CN201620336936.6U CN201620336936U CN205581269U CN 205581269 U CN205581269 U CN 205581269U CN 201620336936 U CN201620336936 U CN 201620336936U CN 205581269 U CN205581269 U CN 205581269U
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Abstract
The utility model discloses a transformer substation relay protection exports detection device, relay state indicating circuit including two at least route power nodes, relay, current -limiting resistor, pilot lamp and connector constitution, transformer substation relay protection export signal passes through connector cut in relay state indicating circuit, and the export detects the operate condition through the relay to transformer substation relay protection. The utility model discloses a relay indicating circuit and/or relay self -sustaining circuit, the operate condition through the relay instructs the signal of transformer substation relay protection export to the completion is to the detection of transformer substation relay protection export signal, the utility model discloses can detect multichannel transformer substation relay protection export signal simultaneously, can self -sustaining measured data so that the detection and the data record of signal have adopted protective diode to prevent that wiring error and detection device self power from exporting the influence of signal to transformer substation relay protection, the utility model discloses measure quick accuracy, damage current protection device.
Description
Technical field
This utility model belongs to electric power debugging field, is specifically related to a kind of substation relay protection outlet detection device.
Background technology
Transformer station be power system converts and adjusts voltage, accept and distribute electric energy and control electric power flow to power equipment, be the key link in electric power transmitting procedure.Along with development and the extensive application of automatic control technology of national economy technology, the automatization level of transformer station is also promoting steadily.
According to the transformer substation system method of operation and the change of load, selection and the round of transformer station's low-frequency low-voltage load shedding outlet also can adjust therewith.According to relevant regulations, electric station needs low-frequency low-voltage load shedding device carries out year verification, and can a ring important in verification be exactly to verify the outgoing line interval adjusted in low-frequency low-voltage load shedding device correctly export tripping operation.Owing to outgoing line interval equipment is all in operation, it is impossible to direct-trip circuit-breaker, the displacement of its pressing plate can only be measured by circuit tester and judge whether outlet.Being illustrated in figure 1 existing protection device tripping operation outlet loop schematic diagram: protection device starts, and outlet junctions TJ will close, tripping operation output clamping a end has positive potential Sudden Changing Rate to represent protection device outlet normally.
The function of low-frequency low-voltage load shedding device outlet tripping operation mainly has the 1st to 7 of frequency to take turns, and the 1st to 7 of voltage is taken turns, and low pressure, low frequency be special takes turns and the mode such as low pressure, low frequency is cut in acceleration.Typically there are tens, even tens feeder lines in one transformer station, owing to measure protection exit one by one, it is therefore desirable to starting protection device tens times, is also required to measure output clamping tens times with circuit tester simultaneously.
Currently for the detection method of substation relay protection outlet, being usually and use manual detection method, maintainer utilizes circuit tester to measure the level change of protection exit one by one.The shortcoming that the method for obvious existing manual detection exists the following aspects:
(1) taking time and effort, need many people to coordinate, test period is long, and testing crew is the most in a rush, significantly impacts debugging speed；
(2) the shortest for movement time due to the outlet of protection device, therefore test apparatus often adds primary fault amount, and circuit tester also can only test l to 2 output clamping；
(3) need repeated multiple times simulation protection fault, both accelerated protection device aging, and easily caused again protection outlet by mistake, thus cause serious power grid accident.
Utility model content
The purpose of this utility model is to provide one can measure multichannel relay protection outlet simultaneously, and measures the substation relay protection outlet detection device quick and precisely, not damaging existing protection device.
This substation relay protection outlet detection device that this utility model provides, including at least two route power supply nodes, relay, current-limiting resistance, display lamp and the relay status indicating circuit of connector composition；Substation relay protection outlet, by connector cut-in relay condition indication circuit, is detected by substation relay protection outlet signal by the operating state of relay.
Described substation relay protection outlet detection device, also includes power module, and power module connects power supply node, provides power supply for substation relay protection outlet detection device.
Described power supply node is connected with external power source, for providing power supply for substation relay protection outlet detection device.
Described electric station relay protection outlet detection device; also include short circuit point; short circuit point constitutes relay self-hold circuit together with relay status indicating circuit, for maintaining the operating state of relay when substation relay protection outlet detects, it is simple to the carrying out of detection work.
Described substation relay protection outlet detection device also includes protecting diode, protection diode to connect with current-limiting resistance, for protecting substation relay protection outlet not affected by substation relay protection outlet detection installation's power source.
Described relay status indicating circuit includes power supply node, relay, the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance and display lamp；Substation relay protection outlet signal is connected to power supply node negative pole by the coil of the first current-limiting resistance, the second current-limiting resistance and relay, and the action contact of relay, the 3rd current-limiting resistance and display lamp are serially connected between the positive and negative electrode of power supply node.
Described relay self-hold circuit includes power supply node, relay, the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance, display lamp and short circuit point；Substation relay protection outlet signal is connected to power supply node negative pole by the coil of the first current-limiting resistance, the second current-limiting resistance and relay, and the action contact of relay, the 3rd current-limiting resistance and display lamp are serially connected between the positive and negative electrode of power supply node；One end of short circuit point is connected between the first current-limiting resistance, the second current-limiting resistance, and the other end of short circuit point is connected between the action contact of relay, the 3rd current-limiting resistance.
This utility model uses relay indicating circuit and/or relay self-hold circuit, is indicated the signal of electric station relay protection outlet by the operating state of relay, thus completes the detection to electric station relay protection outlet signal；This utility model includes multicircuit relay indicating circuit and/or relay self-hold circuit, it is possible to detect multichannel electric station relay protection outlet signal simultaneously；Simultaneously can self-sustaining measurement data by relay self-hold circuit, it is simple to the detection of signal and data record；This utility model have employed protection diode simultaneously, it is possible to prevents mistake and the detection device own power source impact on electric station relay protection outlet signal of wiring.Additionally, this utility model is measured quick and precisely, does not damage existing protection device.
Accompanying drawing explanation
Fig. 1 is the protection device tripping operation outlet loop schematic diagram of background technology.
Fig. 2 is the circuit theory diagrams of a kind of embodiment of the present utility model.
Detailed description of the invention
It is illustrated in figure 2 the circuit theory diagrams of a kind of embodiment of the present utility model: in this embodiment, total N road includes that the first current-limiting resistance (indicates R11 in figure, R21, ..., RN1), protection diode (indicates D11 in figure, D21, ..., DN1), second current-limiting resistance (indicates R12 in figure, R22, ..., RN2), 3rd current-limiting resistance (indicates R13 in figure, R23, ..., RN3), 4th current-limiting resistance (indicates R14 in figure, R24, ..., RN4), relay (indicates 1TXJ in figure, 2TXJ, ..., NTXJ), short circuit point (indicates SW1 in figure, SW2, ... SWN) and display lamp (in figure indicate D12, D22, ..., DN2) the relay self-hold circuit formed.Power supply node (indicating+KM and-KM in figure) in figure can connect substation relay protection outlet detection power module within device, it is also possible to the power supply outside attachment means；The activate switch of the substation relay protection outlet detection device that the activate switch (indicating AN in figure) in figure provides for this utility model, diode (indicating D in figure) is serially connected on the negative pole of power supply node；The first via signal (indicating 1a in figure) of substation relay protection outlet is connected by the negative pole of the first current-limiting resistance, protection diode, the second current-limiting resistance, the 3rd current-limiting resistance, the coil of relay and power supply node；The contact of relay, the 4th current-limiting resistance and display lamp are serially connected between the positive pole of power supply node and negative pole；One end of short circuit point is connected between the contact of relay and the 4th current-limiting resistance, and the other end of short circuit point is connected to protect between diode and the second current-limiting resistance, and short circuit point can connect a switch, for operating as required.
When short circuit point connecting valve; and when disconnecting; now circuit is operated in relay instruction state: when substation relay protection outlet signal is high level; relay coil powers on adhesive; the closing of contact of relay; now display lamp conducting is lighted, and indicates now relay to belong to electriferous state, also indicates that substation relay protection outlet signal now is high level simultaneously；Under this kind of circuit state, if substation relay protection outlet signal is converted to low level by high level, the most now relay coil is by power down, and now relay contact disconnects, and display lamp power down is extinguished.
When short circuit point connecting valve; and during Guan Bi; now circuit is operated in relay self-sustaining state: when electric station relay protection outlet signal is high level; relay coil powers on adhesive; the closing of contact of relay; now display lamp conducting is lighted, and indicates now relay to belong to electriferous state, and substation relay protection outlet signal the most now is high level；Simultaneously because short circuit point is in short circuit state, therefore the Guan Bi contact of relay will make relay coil the most charged, until disconnecting short circuit point, now relay coil just can power down.
In embodiment, IN4007 model all elected as by all of diode；Display lamp elects BT201 model as；Relay uses miniature relay, if model is HRSIH-S-DC12；The power of resistance all elects 2W as.
Claims (7)
1. a substation relay protection outlet detection device, it is characterised in that include at least two route power supply nodes, relay, current-limiting resistance, display lamp and the relay status indicating circuit of connector composition；Substation relay protection outlet, by connector cut-in relay condition indication circuit, is detected by substation relay protection outlet signal by the operating state of relay.
Substation relay protection the most according to claim 1 outlet detection device, it is characterised in that also including power module, power module connects power supply node, provides power supply for substation relay protection outlet detection device.
Substation relay protection the most according to claim 1 outlet detection device, it is characterised in that described power supply node is connected with external power source, for providing power supply for substation relay protection outlet detection device.
Substation relay protection the most according to claim 1 outlet detection device; characterized by further comprising short circuit point; short circuit point constitutes relay self-hold circuit together with relay status indicating circuit; for maintaining the operating state of relay when substation relay protection outlet detects, it is simple to the carrying out of detection work.
Substation relay protection the most according to claim 1 outlet detection device; characterized by further comprising protection diode; protection diode is connected with current-limiting resistance, for protecting substation relay protection outlet not affected by substation relay protection outlet detection installation's power source.
6. export detection device according to the substation relay protection one of claim 1 ~ 5 Suo Shu, it is characterised in that described relay status indicating circuit includes power supply node, relay, the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance and display lamp；Substation relay protection outlet signal is connected to power supply node negative pole by the coil of the first current-limiting resistance, the second current-limiting resistance and relay, and the action contact of relay, the 3rd current-limiting resistance and display lamp are serially connected between the positive and negative electrode of power supply node.
Substation relay protection the most according to claim 4 outlet detection device, it is characterised in that described relay self-hold circuit includes power supply node, relay, the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance, display lamp and short circuit point；Electric station relay protection outlet signal is connected to power supply node negative pole by the coil of the first current-limiting resistance, the second current-limiting resistance and relay, and the action contact of relay, the 3rd current-limiting resistance and display lamp are serially connected between the positive and negative electrode of power supply node；One end of short circuit point is connected between the first current-limiting resistance, the second current-limiting resistance, and the other end of short circuit point is connected between the action contact of relay, the 3rd current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336936.6U CN205581269U (en) | 2016-04-20 | 2016-04-20 | Transformer substation relay protection exports detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336936.6U CN205581269U (en) | 2016-04-20 | 2016-04-20 | Transformer substation relay protection exports detection device |
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| Publication Number | Publication Date |
|---|---|
| CN205581269U true CN205581269U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620336936.6U Active CN205581269U (en) | 2016-04-20 | 2016-04-20 | Transformer substation relay protection exports detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652199A (en) * | 2016-04-20 | 2016-06-08 | 国家电网公司 | Detection device of transformer substation relay protection outlet |
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2016
- 2016-04-20 CN CN201620336936.6U patent/CN205581269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652199A (en) * | 2016-04-20 | 2016-06-08 | 国家电网公司 | Detection device of transformer substation relay protection outlet |
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