CN103887874A - Emergency lighting automatic switchover and alternating current default phase warning device for transformer substation - Google Patents
Emergency lighting automatic switchover and alternating current default phase warning device for transformer substation Download PDFInfo
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- CN103887874A CN103887874A CN201410089445.1A CN201410089445A CN103887874A CN 103887874 A CN103887874 A CN 103887874A CN 201410089445 A CN201410089445 A CN 201410089445A CN 103887874 A CN103887874 A CN 103887874A
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Abstract
The invention discloses an emergency lighting automatic switchover and alternating current default phase warning device for a transformer substation. The device comprises an emergency lighting automatic switchover circuit and an alternating current default phase warning circuit, wherein the emergency lighting automatic switchover circuit can be directly arranged on a standard screen of the transformer substation and is used for being automatically input into a direct current emergency lighting power supply to supply power to an emergency lighting load when an alternating current power supply loses the power and cannot supply the power to a normal lighting load, and the alternating current default phase warning circuit connected with the emergency lighting automatic switchover circuit in a matched mode is used for automatically monitoring the operation situation of the alternating current power supply for the transformer substation. The emergency lighting automatic switchover and the alternating current default phase warning device for the transformer substation can overcome the shortcomings in the prior art that manual switchover is required by emergency lighting of the transformer substation and no warning is given when the alternating current power supply has fault phase failure so that the advantages that emergency lighting of the transformer substation is automatically switched, and an early warning is given when the alternating current power supply has the fault phase failure can be achieved.
Description
Technical field
The present invention relates to substation illumination systems technology field in electric power system, particularly, relate to a kind of substation accident illumination and automatically switch and exchange phase shortage warning device.
Background technology
Along with the further in-depth of power supply enterprise's good service work, provide qualified electric energy to power consumer, ensure the safe and reliable power supply to power consumer, become important political responsibility, financial responsibility and a social responsibility of power supply enterprise.And as the important step of supply of electric power, i.e. the safe and stable operation of transformer station, has a very important role therein.
The illuminator of transformer station, particularly accident lighting system, is an important component part of electrical secondary system in station, and it can provide a good photoenvironment for operations staff, ensure that operations staff bad in the situation that, carries out equipment-patrolling, grid switching operation and accident treatment at night and light.The illumination of transformer station, normally by ac power supply, once transformer station's AC power disappears, drop into emergency lighting by automatic or manual, guarantee essential illumination in the state of accident, can make operations staff under adequate illumination condition, carry out emergency episode processing, prevent spreading of fault, the normal operation of restorer, reduces loss of outage to greatest extent as early as possible, avoids because illumination deficiency causes personnel's confusion to cause occurring personal injury accident.Can visible substation accident illuminator realize correctly, switch fast, thereby ensure the illumination under accident condition in station, most important to the safe and stable operation of transformer station.Substation Station AC system provides AC power for transformer station, and whether its reliability service also directly affects the safe and stable operation of transformer station.
Taking sky and water electric company as example, administration 25 substation accident illuminations in sky and water electric company power transformation O&M work area all can not realize automatic switchover, need operations staff manually to drop into, this directly has influence on, and operations staff's proper operation is fixed a breakdown and fast processing restores electricity.And administration 25 Substation Stations in sky and water electric company power transformation O&M work area all do not have phase shortage warning function by AC system, can not find in time that Substation Station AC system phase shortage is abnormal.
Realizing in process of the present invention, when inventor finds that in prior art, substation accident illumination needs manual switching and AC power phase shortage without defects such as early warning.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of substation accident illumination and automatically switch and exchange phase shortage warning device, to realize the advantage that has early warning when substation accident throws light on automatic switchover and AC power phase shortage.
For achieving the above object, the technical solution used in the present invention is: a kind of substation accident illumination is automatically switched and exchanges phase shortage warning device, comprise that can be directly installed on transformer station standard screen upper and be the emergency lighting automatic switch-over circuit that emergency lighting load is powered for automatically drop into direct current emergency lighting power supply in the time that AC power dead electricity cannot be for the power supply of normal illumination load, and be connected with described emergency lighting automatic switch-over circuit and for the ruuning situation of transformer station's AC power being carried out to the alternating current phase shortage warning circuit of automatic monitoring.
Further, the illumination of above-described substation accident is automatically switched and is exchanged phase shortage warning device, also comprises being connected with described emergency lighting automatic switch-over circuit and alternating current phase shortage warning circuit respectively and for showing the display circuit of emergency lighting automatic switch-over circuit and alternating current phase shortage warning circuit work at present state.
Further, described emergency lighting automatic switch-over circuit, comprise the ac control circuit being connected between AC power and normal illumination load, be connected to the DC control circuit between DC power supply and emergency lighting load, and the automatic switching module being connected with described ac control circuit and DC control circuit respectively; Described interchange phase shortage warning circuit and display circuit, be connected with ac control circuit, DC control circuit and automatic switching module respectively; Described AC power, shields with exchanging feeder line from transformer station; Described DC power supply, shields with DC feeder from transformer station.
Further, between described ac control circuit and AC power, be connected with AC low-tension circuit breaker Q F1; Between described DC control circuit and DC power supply, be connected with DC low-voltage circuit breaker Q F2.
Further, described ac control circuit, comprise voltage relay 1YJ, control coil K1, normally opened contact K11, normally-closed contact K12 and the normally-closed contact K13 of voltage relay 1YJ, voltage relay 2YJ, control coil K2, normally opened contact K21 and the normally-closed contact K22 of voltage relay 2YJ, voltage relay 3YJ, the control coil K3 of voltage relay 3YJ and normally opened contact K31, A.C. contactor 1C, control coil K5, normally opened contact K51, normally opened contact K52, normally opened contact K53 and the normally opened contact K54 of A.C. contactor 1C; Wherein:
A phase, B phase and the C phase of described AC power, respectively accordingly after the control coil K2 of control coil K1, voltage relay 2YJ and the control coil K3 of voltage relay 3YJ of voltage relay 1YJ, and between the neutral line N of AC power;
The A of described AC power is after the normally opened contact K11 of voltage relay 1YJ, the B of AC power is mutually successively after the normally-closed contact K12 of voltage relay 1YJ and the normally opened contact K21 of voltage relay 2YJ, the C phase of AC power after the normally-closed contact K22 of normally-closed contact K13, voltage relay 2YJ and the normally opened contact K31 of voltage relay 3YJ of voltage relay 1YJ, is connected with the neutral line N of AC power successively simultaneously after the control coil K5 of A.C. contactor 1C;
A phase, B phase, C phase and the neutral line N of described AC power, after normally opened contact K51, normally opened contact K52, normally opened contact K53 and the normally opened contact K54 of A.C. contactor 1C, be connected to normal illumination load respectively.
Further, described DC control circuit, comprises D.C. contactor 2C, and the control coil K6 of D.C. contactor 2C, normally opened contact K61 and normally opened contact K62; Wherein:
The positive pole of described DC power supply, after the control coil K6 of D.C. contactor 2C, connects the negative pole of DC power supply;
The positive pole of described DC power supply and negative pole, after the normally opened contact K61 and K62 of D.C. contactor 2C, be connected to emergency lighting load respectively.
Further, described automatic switching module, comprises the normally-closed contact K55 of A.C. contactor 1C, the normally-closed contact K14 of voltage relay 1YJ, the normally-closed contact K23 of voltage relay 2YJ, and the normally-closed contact K32 of voltage relay 3YJ; Wherein:
The normally-closed contact K32 of the normally-closed contact K14 of described voltage relay 1YJ, the normally-closed contact K23 of voltage relay 2YJ and voltage relay 3YJ, is connected between the positive pole of DC power supply and the control coil K6 of D.C. contactor 2C successively; And/or,
The normally-closed contact K55 of described A.C. contactor 1C, is connected in turn between the positive pole of DC power supply and the control coil K6 of D.C. contactor 2C; And/or,
The normally-closed contact K55 of described A.C. contactor 1C, is connected in parallel on the normally-closed contact K23 of normally-closed contact K14, voltage relay 2YJ of voltage relay 1YJ and the two ends of the normally-closed contact K32 of voltage relay 3YJ that series connection arranges.
Further, described alternating current phase shortage warning circuit, comprise auxiliary relay 1ZJ, control coil K8, normally-closed contact K81 and the normally opened contact K82 of auxiliary relay 1ZJ, buzzer FM, reset button 1YA, the normally-closed contact K16 of voltage relay 1YJ, the normally-closed contact K25 of voltage relay 2YJ, and the normally-closed contact K34 of voltage relay 3YJ; Wherein:
The positive pole of described DC power supply, respectively after the normally-closed contact K25 of normally-closed contact K16, voltage relay 2YJ and the normally-closed contact K34 of voltage relay 3YJ of voltage relay 1YJ, be divided into the negative pole that is connected to respectively DC power supply after two-way, one tunnel meets the normally opened contact K82 of auxiliary relay 1ZJ and the control coil K8 of auxiliary relay 1ZJ successively, another road meets normally-closed contact K81 and the buzzer FM of auxiliary relay 1ZJ successively, and reset button 1YA is connected in parallel on the two ends of the normally opened contact K82 of auxiliary relay 1ZJ.
Further, described display circuit, comprise normally opened contact K63, normal illumination display lamp HR1 and the emergency lighting display lamp HR2 of normally opened contact K56, the D.C. contactor 2C of A.C. contactor 1C, the normally opened contact K56 of described A.C. contactor 1C and normal illumination display lamp HR1 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, and the normally opened contact K63 of described D.C. contactor 2C and emergency lighting display lamp HR2 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply; And/or,
Described display circuit, comprise the normally-closed contact K15 of voltage relay 1YJ, the normally-closed contact K24 of voltage relay 2YJ, the normally-closed contact K33 of voltage relay 3YJ, A phase phase shortage display lamp HR3, B phase phase shortage display lamp HR4 and C phase phase shortage display lamp HR5, the normally-closed contact K15 of described voltage relay 1YJ and A phase phase shortage display lamp HR3 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, the normally-closed contact K24 of described voltage relay 2YJ and B phase phase shortage display lamp HR4 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, the normally-closed contact K33 of voltage relay 3YJ and C phase phase shortage display lamp HR5 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply.
Further, described display circuit also comprises panel, and described normal illumination display lamp HR1, emergency lighting display lamp HR2, A phase phase shortage display lamp HR3, B phase phase shortage display lamp HR4 and C phase phase shortage display lamp HR5 are separately positioned on panel; And/or,
Any one in described normal illumination display lamp HR1, emergency lighting display lamp HR2, A phase phase shortage display lamp HR3, B phase phase shortage display lamp HR4 and C phase phase shortage display lamp HR5, specifically comprises LED lamp or light-emitting diode.
The substation accident illumination of various embodiments of the present invention is automatically switched and exchanges phase shortage warning device, owing to comprising that can be directly installed on transformer station standard screen upper and be the emergency lighting automatic switch-over circuit that emergency lighting load is powered for automatically drop into direct current emergency lighting power supply in the time that AC power dead electricity cannot be for the power supply of normal illumination load, and be connected with emergency lighting automatic switch-over circuit and for the ruuning situation of transformer station's AC power being carried out to the alternating current phase shortage warning circuit of automatic monitoring; Can, in the time exchanging mains lighting supply dead electricity, automatically drop into direct current emergency lighting power supply, for substation operation personnel provide reliable photoenvironment; Increase Substation Station AC power phase shortage warning function simultaneously, indicate in time and the Substation Station AC power phase-deficient operation of reporting to the police abnormal, realize the automatic monitoring to Substation Station AC power operation conditions, ensure the safe and stable operation of transformer station; Thereby can overcome substation accident in prior art throws light on while needing manual switching and AC power phase shortage without defects such as early warning, to realize the advantage that has early warning when substation accident throws light on automatic switchover and AC power phase shortage.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is substation accident illumination automatic switchover of the present invention and the operation principle schematic diagram (winding diagram that left side is ac control circuit, the winding diagram that right side is DC control circuit) that exchanges phase shortage warning device.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, as shown in Figure 1, provide a kind of substation accident illumination automatically switch and exchange phase shortage warning device, can realize AC power disappearance time, the automatic switchover of substation accident illumination (can be in the time exchanging mains lighting supply dead electricity, automatically drop into direct current emergency lighting power supply, for substation operation personnel provide reliable photoenvironment); Meanwhile, AC power phase shortage warning function for increase Substation Station, indicates in time and the Substation Station of reporting to the police uses AC power phase-deficient operation abnormal, realizes the automatic monitoring to Substation Station AC power operation conditions, the safe and stable operation of guarantee transformer station.The illumination of this substation accident is automatically switched and is exchanged phase shortage warning device, have volume little, lightweight, install that wiring is simple, reliable in action, multiple functional, stable performance, exchange lighting loop and the features such as large wiring variation are not carried out in accident DC lighting loop to normal at present; There is standard PC case size, can be directly installed on transformer station's existing standard and shield cashier's office in a shop.
The substation accident illumination of the present embodiment is automatically switched and exchanges phase shortage warning device, comprise emergency lighting automatic switch-over circuit and exchange phase shortage warning circuit, the automatic switchover of substation accident illumination can realize AC power disappearance time, the safe and stable operation of guarantee transformer station.This substation accident illumination is automatically switched and is exchanged phase shortage warning device and adopts the basic conception of technical scheme to be: AC power is received normal illumination load through 4 normally opened contacts of A.C. contactor 1C, DC power supply is received emergency lighting load through 2 normally opened contacts of D.C. contactor 2C, the A phase of AC power, B phase, C meets respectively voltage relay 1YJ mutually, voltage relay 2YJ, the control coil of voltage relay 3YJ, the A of AC power is through the normally opened contact of voltage relay 1YJ, the B of AC power is through the normally-closed contact of voltage relay 1YJ and the normally opened contact of voltage relay 2YJ, the C of AC power is through the normally-closed contact of voltage relay 1YJ, the normally opened contact of the normally-closed contact of voltage relay 2YJ and voltage relay 3YJ connects the control coil of A.C. contactor simultaneously, DC power supply (is voltage relay 1YJ through 3 voltage relays respectively, voltage relay 2YJ and voltage relay 3YJ) normally-closed contact, the normally-closed contact of A.C. contactor connects the control coil of D.C. contactor.
Wherein, the normally opened contact of A.C. contactor 1C connects display lamp, and the normally opened contact of D.C. contactor 2C connects display lamp, indicates respectively normal illumination and emergency lighting; The normally-closed contact of voltage relay 1YJ connects display lamp, and the normally-closed contact of voltage relay 2YJ connects display lamp, and the normally-closed contact of voltage relay 3YJ connects display lamp, indicates respectively A phase, B phase, C phase phase shortage; The normally-closed contact Hou Yi in parallel road of 3 auxiliary relays connects the control coil of this auxiliary relay through the normally opened contact of auxiliary relay, another road connects buzzer through the normally-closed contact of this auxiliary relay, and reset button is parallel to normally opened contact.
The illumination of above-described embodiment substation accident is automatically switched and the operation principle of interchange phase shortage warning device is described as follows:
(1) under normal circumstances, in transformer station, station is normal with three-phase alternating-current supply, A.C. contactor 1C excitation, and its normally opened contact closure, provides normal illumination power supply to transformer station;
(2) under accident conditions, in transformer station, three-phase alternating-current supply dead electricity is used at station, A.C. contactor 1C loss of excitation, and its normally opened contact is opened; Voltage relay 1YJ, 2YJ, 3YJ are because of ac power supply system (being three-phase alternating-current supply dead electricity) dead electricity loss of excitation simultaneously, and its normally-closed contact closure starts D.C. contactor 2C excitation, and its normally opened contact closure, provides emergency lighting power supply to transformer station;
(3) can not automatically switch because of emergency lighting loop in voltage relay 1YJ, 2YJ, the sticky situation that extremely causes the accident in 3YJ contact for avoiding, be incorporated to A.C. contactor 1C normally-closed contact at voltage relay 1YJ, 2YJ, 3YJ series connection normally-closed contact two ends, once A.C. contactor 1C loss of excitation, its normally-closed contact closure, start D.C. contactor 2C excitation, realize emergency lighting and automatically switch;
(4) after in transformer station, recover with three-phase alternating-current supply at station, voltage relay 1YJ, 2YJ, 3YJ and A.C. contactor 1C excitation, its normally-closed contact disconnects, D.C. contactor 2C loss of excitation, its normally opened contact is opened, and automatically cuts off emergency lighting;
(5) this substation accident throws light on to automatically switch and exchange phase shortage warning device and has interchange phase shortage warning function concurrently: in the time of any phase of station three-phase alternating-current supply in transformer station or two-phase phase-deficient operation, start buzzer and send alarm, light " phase shortage " indicator light on panel simultaneously, operations staff is hearing after alarm call, can hand resetting alarm, can determine rapidly fault phase according to the indicator light on panel, to process in time simultaneously.The ruuning situation of using three-phase alternating-current supply about station in transformer station, is described as follows:
1. under normal circumstances, the coil of A.C. contactor 1C is from the power taking of A phase, ensures regular event, the normally-closed contact of B, C phase factor access voltage relay 1YJ and can not be to the coil power supply of A.C. contactor 1C;
2. when A phase phase shortage, the coil of A.C. contactor 1C, from the power taking of B phase (because of A phase phase shortage, voltage relay 1YJ dead electricity, its normally-closed contact closure), ensures regular event; Although the normally-closed contact closure of voltage relay 1YJ, C phase factor also access voltage relay 2YJ normally-closed contact and can not be to the coil power supply of A.C. contactor 1C;
3. when B phase phase shortage, the coil of A.C. contactor 1C is from the power taking of A phase, the normally-closed contact of C phase factor access voltage relay 1YJ and can not be to the coil power supply of A.C. contactor 1C;
4. when C phase phase shortage, the coil of A.C. contactor 1C is from the power taking of A phase, the normally-closed contact of B phase factor access voltage relay 1YJ and can not be to the coil power supply of A.C. contactor 1C;
5. when AB two-phase phase shortage, the coil of A.C. contactor 1C, from the power taking of C phase (because of AB phase phase shortage, voltage relay 1YJ, 2YJ dead electricity, its normally-closed contact closure), ensures regular event.
6. when AC two-phase phase shortage, the coil of A.C. contactor 1C, from the power taking of B phase (because of A phase phase shortage, voltage relay 1YJ dead electricity, its normally-closed contact closure), ensures regular event;
7. when BC two-phase phase shortage, the coil of A.C. contactor 1C, from the power taking of A phase, ensures regular event.
Particularly, as shown in Figure 1, automatically switch and exchange in phase shortage warning device in the substation accident illumination of above-described embodiment, AC power is through 4 normally opened contact K51 of A.C. contactor 1C, K52, K53, K54 receives normal illumination load, DC power supply is through 2 normally opened contact K61 of D.C. contactor 2C, K62 receives emergency lighting load, the A phase of AC power, B phase, C meets respectively voltage relay 1YJ mutually, voltage relay 2YJ, the control coil K1 of voltage relay 3YJ, K2, K3, the A of AC power is through the normally opened contact K11 of voltage relay 1YJ, the B of AC power is through the normally-closed contact K12 of voltage relay 1YJ and the normally opened contact K21 of voltage relay 2YJ, the C of AC power is through the normally-closed contact K13 of voltage relay 1YJ, after the normally-closed contact K22 of voltage relay 2YJ and the normally opened contact K31 of voltage relay 3YJ, meet the control coil K5 of A.C. contactor 1C simultaneously, DC power supply meets the control coil K6 of D.C. contactor 2C successively after normally-closed contact K14, the K23 of 3 voltage relays (being voltage relay 1YJ, voltage relay 2YJ and voltage relay 3YJ) and K32, and after the normally-closed contact K55 of A.C. contactor 1C, meets the control coil K6 of D.C. contactor 2C.In the time that the A of AC power phase, B phase, C lack mutually entirely, control coil K1, the K2 of voltage relay 1YJ, voltage relay 2YJ, voltage relay 3YJ, K3 dead electricity, normally opened contact K11, K21, K31 disconnect, the control coil K5 dead electricity of A.C. contactor 1C, normally opened contact K51, K52, K53, K54 disconnect, and cut off normal illumination load; Meanwhile, normally-closed contact K14, K23, K32 closure, normally-closed contact K55 closure, control coil K6 obtains electric, and normally opened contact K61, K62 closure are opened emergency lighting load, complete substation accident illumination and automatically switch.
The normally opened contact K56 of A.C. contactor 1C meets normal illumination display lamp HR1, and the normally opened contact K63 of D.C. contactor 2C meets emergency lighting display lamp HR2, indicates respectively normal illumination and emergency lighting.In the time that AC power has at least one to exist mutually, control coil K5 obtains electric, control coil K6 dead electricity, and normally opened contact K56 closure, normally opened contact K63 disconnects, and HR1 is bright for normal illumination display lamp, instruction normal illumination; In the time that the A of AC power phase, B phase, C lack mutually entirely, control coil K5 dead electricity, control coil K6 obtains electric, and normally opened contact K56 disconnects, normally opened contact K63 closure, HR2 is bright for emergency lighting display lamp, instruction emergency lighting.
The normally-closed contact K15 of voltage relay 1YJ meets A phase phase shortage display lamp HR3, the normally-closed contact K24 of voltage relay 2YJ meets B phase phase shortage display lamp HR4, the normally-closed contact K33 of voltage relay 3YJ meets C phase phase shortage display lamp HR5, indicates respectively A phase, B phase, the C phase phase shortage of AC power.
After normally-closed contact K16, the K25 of 3 voltage relays (being voltage relay 1YJ, voltage relay 2YJ and voltage relay 3YJ), K34 parallel connection, one tunnel meets the control coil K8 of this auxiliary relay 1ZJ through the normally opened contact K82 of auxiliary relay 1ZJ, another road meets buzzer FM through the normally-closed contact K81 of this auxiliary relay 1ZJ, and reset button 1YA is parallel to normally opened contact K82.In the time there is phase shortage mutually in the A of AC power phase, B phase, C, control coil K1, K2, K3 have 1 dead electricity at least, normally-closed contact K16, K25, K34 have 1 closure at least, buzzer FM sounding, when reset button 1YA presses, control coil K8 obtains electric, normally opened contact K82 closure, normally-closed contact K81 disconnects, not sounding of buzzer FM dead electricity.
The substation accident illumination of above-described embodiment is automatically switched and exchanges phase shortage warning device, without carrying out large wiring change to normally exchanging at present illumination and direct current emergency lighting loop, only needing that transformer station is normally exchanged to illumination and direct current emergency lighting accesses the illumination of this substation accident and automatically switches and exchange phase shortage warning device, in the time detecting that AC power three-phase lacks entirely, cut-out normal illumination load, open emergency lighting load, show and buzzing warning; Also possesses phase shortage light audible alarm function.Can fundamentally solve the substation accident hidden danger that can not automatically switch of throwing light on, meet transformer station's intraoral illumination uninterrupted power supply requirement that code requires, ensure that operations staff has reliable photoenvironment in the time of accident treatment, for operations staff correctly judges, analysis, processing accident provide guarantee; Realize the automatic monitoring to transformer station's AC power operation conditions simultaneously, ensure the safe and stable operation of transformer station.
In sum, the substation accident illumination of the various embodiments described above of the present invention is automatically switched and exchanges phase shortage warning device, existing interchange lighting loop and emergency lighting loop are not carried out to large wiring variation, can be in the time exchanging mains lighting supply dead electricity, automatically drop into direct current emergency lighting power supply, for substation operation personnel provide reliable photoenvironment; Meanwhile, AC power phase shortage warning function for increase Substation Station, indicates in time and the Substation Station of reporting to the police uses AC power phase-deficient operation abnormal, realizes the automatic monitoring to Substation Station AC power operation conditions, the safe and stable operation of guarantee transformer station.This substation accident illumination is automatically switched and exchanges phase shortage warning device, have that volume is little, standard PC case size and the advantage such as installation and maintenance are simple, reliable, can be directly installed on transformer station's existing standard shields cashier's office in a shop, can popularize application in an all-round way at all kinds of of power industry, change, power distribution station, and can promote the use of and need the other industry of uninterrupted power supply and industrial enterprise, popularizing application prospect is wide.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a substation accident illumination is automatically switched and exchanges phase shortage warning device, it is characterized in that, comprise that can be directly installed on transformer station standard screen upper and be the emergency lighting automatic switch-over circuit that emergency lighting load is powered for automatically drop into direct current emergency lighting power supply in the time that AC power dead electricity cannot be for the power supply of normal illumination load, and be connected with described emergency lighting automatic switch-over circuit and for the ruuning situation of transformer station's AC power being carried out to the alternating current phase shortage warning circuit of automatic monitoring.
2. substation accident illumination according to claim 1 is automatically switched and exchanges phase shortage warning device, it is characterized in that, also comprise being connected with described emergency lighting automatic switch-over circuit and alternating current phase shortage warning circuit respectively and for showing the display circuit of emergency lighting automatic switch-over circuit and alternating current phase shortage warning circuit work at present state.
3. substation accident illumination according to claim 1 and 2 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described emergency lighting automatic switch-over circuit, comprise the ac control circuit being connected between AC power and normal illumination load, be connected to the DC control circuit between DC power supply and emergency lighting load, and the automatic switching module being connected with described ac control circuit and DC control circuit respectively; Described interchange phase shortage warning circuit and display circuit, be connected with ac control circuit, DC control circuit and automatic switching module respectively; Described AC power, shields with exchanging feeder line from transformer station; Described DC power supply, shields with DC feeder from transformer station.
4. substation accident illumination according to claim 3 is automatically switched and exchanges phase shortage warning device, it is characterized in that, between described ac control circuit and AC power, is connected with AC low-tension circuit breaker Q F1; Between described DC control circuit and DC power supply, be connected with DC low-voltage circuit breaker Q F2.
5. substation accident illumination according to claim 3 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described ac control circuit, comprise voltage relay 1YJ, the control coil K1 of voltage relay 1YJ, normally opened contact K11, normally-closed contact K12 and normally-closed contact K13, voltage relay 2YJ, the control coil K2 of voltage relay 2YJ, normally opened contact K21 and normally-closed contact K22, voltage relay 3YJ, the control coil K3 of voltage relay 3YJ and normally opened contact K31, A.C. contactor 1C, the control coil K5 of A.C. contactor 1C, normally opened contact K51, normally opened contact K52, normally opened contact K53 and normally opened contact K54, wherein:
A phase, B phase and the C phase of described AC power, respectively accordingly after the control coil K2 of control coil K1, voltage relay 2YJ and the control coil K3 of voltage relay 3YJ of voltage relay 1YJ, and between the neutral line N of AC power;
The A of described AC power is after the normally opened contact K11 of voltage relay 1YJ, the B of AC power is mutually successively after the normally-closed contact K12 of voltage relay 1YJ and the normally opened contact K21 of voltage relay 2YJ, the C phase of AC power after the normally-closed contact K22 of normally-closed contact K13, voltage relay 2YJ and the normally opened contact K31 of voltage relay 3YJ of voltage relay 1YJ, is connected with the neutral line N of AC power successively simultaneously after the control coil K5 of A.C. contactor 1C;
A phase, B phase, C phase and the neutral line N of described AC power, after normally opened contact K51, normally opened contact K52, normally opened contact K53 and the normally opened contact K54 of A.C. contactor 1C, be connected to normal illumination load respectively.
6. substation accident illumination according to claim 5 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described DC control circuit, comprises D.C. contactor 2C, and the control coil K6 of D.C. contactor 2C, normally opened contact K61 and normally opened contact K62; Wherein:
The positive pole of described DC power supply, after the control coil K6 of D.C. contactor 2C, connects the negative pole of DC power supply;
The positive pole of described DC power supply and negative pole, after the normally opened contact K61 and K62 of D.C. contactor 2C, be connected to emergency lighting load respectively.
7. substation accident illumination according to claim 6 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described automatic switching module, comprise the normally-closed contact K55 of A.C. contactor 1C, the normally-closed contact K14 of voltage relay 1YJ, the normally-closed contact K23 of voltage relay 2YJ, and the normally-closed contact K32 of voltage relay 3YJ; Wherein:
The normally-closed contact K32 of the normally-closed contact K14 of described voltage relay 1YJ, the normally-closed contact K23 of voltage relay 2YJ and voltage relay 3YJ, is connected between the positive pole of DC power supply and the control coil K6 of D.C. contactor 2C successively; And/or,
The normally-closed contact K55 of described A.C. contactor 1C, is connected in turn between the positive pole of DC power supply and the control coil K6 of D.C. contactor 2C; And/or,
The normally-closed contact K55 of described A.C. contactor 1C, is connected in parallel on the normally-closed contact K23 of normally-closed contact K14, voltage relay 2YJ of voltage relay 1YJ and the two ends of the normally-closed contact K32 of voltage relay 3YJ that series connection arranges.
8. substation accident illumination according to claim 6 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described alternating current phase shortage warning circuit, comprise auxiliary relay 1ZJ, control coil K8, normally-closed contact K81 and the normally opened contact K82 of auxiliary relay 1ZJ, buzzer FM, reset button 1YA, the normally-closed contact K16 of voltage relay 1YJ, the normally-closed contact K25 of voltage relay 2YJ, and the normally-closed contact K34 of voltage relay 3YJ; Wherein:
The positive pole of described DC power supply, respectively after the normally-closed contact K25 of normally-closed contact K16, voltage relay 2YJ and the normally-closed contact K34 of voltage relay 3YJ of voltage relay 1YJ, be divided into the negative pole that is connected to respectively DC power supply after two-way, one tunnel meets the normally opened contact K82 of auxiliary relay 1ZJ and the control coil K8 of auxiliary relay 1ZJ successively, another road meets normally-closed contact K81 and the buzzer FM of auxiliary relay 1ZJ successively, and reset button 1YA is connected in parallel on the two ends of the normally opened contact K82 of auxiliary relay 1ZJ.
9. substation accident illumination according to claim 6 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described display circuit, comprise the normally opened contact K56 of A.C. contactor 1C, the normally opened contact K63 of D.C. contactor 2C, normal illumination display lamp HR1 and emergency lighting display lamp HR2, the normally opened contact K56 of described A.C. contactor 1C and normal illumination display lamp HR1 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, the normally opened contact K63 of described D.C. contactor 2C and emergency lighting display lamp HR2 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, and/or,
Described display circuit, comprise the normally-closed contact K15 of voltage relay 1YJ, the normally-closed contact K24 of voltage relay 2YJ, the normally-closed contact K33 of voltage relay 3YJ, A phase phase shortage display lamp HR3, B phase phase shortage display lamp HR4 and C phase phase shortage display lamp HR5, the normally-closed contact K15 of described voltage relay 1YJ and A phase phase shortage display lamp HR3 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, the normally-closed contact K24 of described voltage relay 2YJ and B phase phase shortage display lamp HR4 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply, the normally-closed contact K33 of voltage relay 3YJ and C phase phase shortage display lamp HR5 are connected in turn between the positive pole of DC power supply and the negative pole of DC power supply.
10. substation accident illumination according to claim 9 is automatically switched and exchanges phase shortage warning device, it is characterized in that, described display circuit also comprises panel, and described normal illumination display lamp HR1, emergency lighting display lamp HR2, A phase phase shortage display lamp HR3, B phase phase shortage display lamp HR4 and C phase phase shortage display lamp HR5 are separately positioned on panel; And/or,
Any one in described normal illumination display lamp HR1, emergency lighting display lamp HR2, A phase phase shortage display lamp HR3, B phase phase shortage display lamp HR4 and C phase phase shortage display lamp HR5, specifically comprises LED lamp or light-emitting diode.
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| CN201410089445.1A CN103887874B (en) | 2014-03-12 | 2014-03-12 | A kind of substation accident illumination is automatically switched and exchange phase shortage warning device |
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| CN104201763A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Alternating-current distribution panel emergency power device |
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| CN105790426A (en) * | 2016-04-11 | 2016-07-20 | 国网黑龙江省电力有限公司鸡西供电公司 | Electric power information network device power supply method |
| CN108448711A (en) * | 2018-05-24 | 2018-08-24 | 华润新能源（连州）风能有限公司 | A kind of illumination switching device |
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|---|---|
| CN103887874B (en) | 2018-01-23 |
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