Box-type substation
Technical field
The utility model relates to the power supply unit field, in particular to a kind of box-type substation.
Background technology
Box-type substation is a kind of collection high voltage switchgear, distribution transformer and low-voltage distribution equipment are in one, and press certain connection plan with high voltage switchgear, the outdoor close-coupled controller switching equipment of the prefabrication that distribution transformer and low-voltage distribution equipment link into an integrated entity, be about to high powered, the transformer step-down, functions such as low-voltage distribution are organically combined, be installed in a protection against the tide, antirust, dustproof, protection against rodents, fire prevention, antitheft, heat insulation, totally-enclosed, movably in the steel construction casing, totally-enclosed operation, be applicable to city net construction and upgrading, be a kind of new-type transformer station that after civil engineering transformer station, emerges, be applicable to the mine, factory and enterprise, oil gas field and wind power station.
Box-type substation of the prior art is divided into three functional compartments: hyperbaric chamber, transformer room and low-pressure chamber, three functional compartments are order font or isosceles triangle arrangement usually, the 10KV cable in hyperbaric chamber is connected the high-pressure side of transformer, the step down side magnetic head is connected with the copper busbar of metering current mulual inductor through exposing in the low-tension switch cabinet, and each chamber also is provided with independent inlet/outlet separately.
But box-type substation of the prior art is not taked any measures of anti-stealing electricity, and current lawless person's electricity filching means is brilliant day by day, intelligent, diversified gradually, and mostly be organized team play, for example in current measurement circuit, shunt short circuit current terminal or the high-power shunt resistance of access in parallel; A perhaps external transformer, summation current transformer forms differential connection, reduces the electric current of inflow current table; Use external cable to be overlapped on transformer low voltage side outlet copper bar place, the stealing position is at metering current mulual inductor place suitable for reading, not in measures range usually; And distort means such as metering device wiring, What is more, directly destroys metering device.
Because there is defective in box-type substation of the prior art aspect anti-electricity-theft, the electricity filching behavior for the lawless person provides opportunity easily, thereby causes the electricity charge to run off.
The utility model content
The utility model aims to provide a kind of box-type substation with anti-stealing electricity function device, to solve the defective that box-type substation of the prior art exists aspect anti-electricity-theft, prevents that the lawless person from carrying out electricity filching behavior.
To achieve these goals, according to an aspect of the present utility model, a kind of box-type substation is provided, comprise: hyperbaric chamber, transformer room and low-pressure chamber, between transformer room and low-pressure chamber, measuring room is set, the step-down side in the transformer room is drawn low-voltage bus bar, low-voltage bus bar inserts measuring room, and enter low-pressure chamber by measuring room, and measuring room comprises: the electric current shunt measurement device, measure the electric current of shunting from low-voltage bus bar in real time; The stealing controller, be connected with the electric current shunt measurement device by lead, obtain the measurement result of electric current shunt measurement device, when shunt current, produce the concurrent alarming information of delivering newspaper, and can close or open warning function according to the external command information that receives; Circuit breaker is connected with the stealing controller by lead, and the warning message according to the stealing controller sends cuts off the power supply that leads to low-pressure chamber.
Further, first differential current transformer is installed on step-down side, second differential current transformer is installed at end opening place at the electric current shunt measurement device, first differential current transformer is connected with the stealing controller by lead with second differential current transformer, and the stealing controller is gathered the difference between current of first differential current transformer and second differential current transformer.
Further, the electric current shunt measurement device is a metering current mulual inductor.
Further, the stealing controller comprises: information gathering portion, obtain the measurement result and the external command of electric current shunt measurement device; Information storage part, information and external command that stored information collection portion collects, and the identifying information of target terminal; Control part according to collection and canned data, external command, produces warning message, perhaps, closes or open warning function; The information sending part sends warning message to target terminal.
Further, the low-voltage bus bar outside is coated with metal enclosed device, and uses anti-theft screw that low-voltage bus bar is fixed.
Further, be provided with low-voltage bus bar open detection switch between metal enclosed device and low-voltage bus bar, the open detection switch is connected with the stealing controller by lead, and the stealing controller is gathered the signal of open detection switch.
Further, the pilot switch that monitors the turnover situation is installed in transformer room and measuring room, pilot switch is connected with the stealing controller by lead, the signal of stealing controller acquisition monitoring switch.
Further, measuring room has the two storied gate structure, and the two storied gate structure comprises outer door and inner layer door, and magnetic card cipher lock is set on the inner layer door.
According on the other hand of the present utility model, inner layer door is provided with window.
The utlity model has following technique effect:
Use the technical solution of the utility model, be provided with measuring room, can monitor the operation information of box-type substation in real time, stealing controller when in the box-type substation electricity filching behavior taking place in the measuring room can send warning message to box-type substation operational management personnel immediately, so that in time prevent electricity filching behavior, effectively reduce the electricity charge that cause because of stealing and run off.
Description of drawings
Figure of description is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the planar structure schematic diagram of the utility model box-type substation;
Fig. 2 is the structural representation of the utility model box-type substation hyperbaric chamber and measuring room; And
Fig. 3 is the utility model box-type substation stealing controller fundamental diagram.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the planar structure schematic diagram of the utility model box-type substation.As shown in Figure 1, the box-type substation of the utility model embodiment is provided with an electric wire hand-hole, is used for the user side cable is inserted transformer station.Box-type substation comprises: hyperbaric chamber 1, transformer room 2, low-pressure chamber 3 and be arranged on transformer room 2 and low-pressure chamber 3 between measuring room 4.Wherein, low-voltage bus bar 22 from the transformer room transformer 21 low-pressure ends in 2 draw, insert measuring room 4, and enter low-pressure chamber 3 by measuring room 4.
Comprise in the hyperbaric chamber 1: high-tension switch cabinet 11, high-tension switch cabinet 11 models are the XGN15-12 type, comprise AH1 incoming line cabinet 111 and AH2 transformer case 112.
Comprise in the transformer room 2: transformer 21, low-voltage bus bar 22, wherein, the high-pressure side of transformer 21 connects the 10KV cable, and first differential current transformer is installed on the low-pressure end of transformer 21; Low-voltage bus bar 22 adopts anti-theft screw to fix, and it is loosening that low-voltage bus bar 22 is not easy by the extracting tool that electricity filching person is commonly used at present; And, the open detection switch that detects low-voltage bus bar 22 unlatching situations is installed between metal enclosed device and the low-voltage bus bar at the metal enclosed device of low-voltage bus bar 22 outer setting; In addition, in transformer room 3, also be provided with entrance guard device, monitor the turnover situation of transformer room 3 as transformer room's pilot switch.
Introduce the structure of measuring room in detail below in conjunction with Fig. 2.
Fig. 2 is the structural representation of the utility model box-type substation hyperbaric chamber and measuring room.As shown in Figure 2, measuring room 4 comprises: electric current shunt measurement device 41, stealing watch-dog 42 and circuit breaker 43.For example, in the present embodiment, can adopt metering current mulual inductor to measure the situation of electric current shunting as electric current shunt measurement device 41.End opening place at metering current mulual inductor 41 also is equipped with second differential current transformer; Entrance guard device is installed in the measuring room, is used to monitor measuring room 4 turnover situations.
And stealing controller 42 mainly comprises as the core of measuring room 4: information gathering portion, information storage part, control part and information sending part.The operation principle of stealing controller 42 is described below in conjunction with Fig. 3.
Fig. 3 is the utility model box-type substation stealing controller fundamental diagram.As shown in Figure 3, information gathering portion obtains the pilot signal of the pilot switch of the start signal of difference between current signal, open detection switch of measurement signals, first differential current transformer and second differential current transformer of metering current mulual inductor 41 and hyperbaric chamber 2 and measuring room 4.In addition, information gathering portion can also obtain the power on/off situation of 10KV cable and the residue situation of user's prepayment electric expense.The data that information gathering portion is obtained are sent to the information storage part of stealing controller 42 and store, and simultaneously, information storage part can also be stored the identifying information of five target terminals, for example box-type substation administrative staff's phone number; Control part determines next step operation according to the information in the information storage part, disconnects as the power supply that will lead to low-pressure chamber by circuit breaker.The information sending part sends warning message to target terminal, as by antenna transmission warning message shown in Figure 3.
For example, measurement result when metering current mulual inductor 41, the difference between current of first differential current transformer and second differential current transformer, one or more has the pilot signal of the pilot switch of the start signal of open detection switch and hyperbaric chamber 2 and measuring room 4 when unusual, control part can produce alarm signal, and the information sending part can also be to the target terminal that is stored in the identifying information correspondence in the storage part in advance, as sending warning message to mobile phone, by administrative staff's remote manual control cut-off breaker of box-type substation, perhaps there is control part directly to control circuit breaker and disconnects the power supply that leads to low-pressure chamber 3.
In addition, when the outage of 10KV cable, when perhaps user's prepayment electric expense remaining sum was zero, control part also can be controlled circuit breaker and disconnect.Simultaneously, information gathering portion can also receive the information from box-type substation administrative staff's mobile phone transmission, when the box-type substation administrative staff need enter transformation chamber 2 or measuring room 4 and carry out maintenance and inspection, in order to prevent false alarm, administrative staff can send " warning function is removed in request " signal with mobile phone to stealing controller 42 earlier, after waiting to receive " alarm release " feedback information of stealing controller 42 transmissions, administrative staff's measuring room of being allowed for access, after administrative staff finish the work, send " warning function unlatching " signal to stealing controller 42 again by mobile phone, after stealing controller 42 feedback " warning function recovers " information, stealing controller 42 recovers alarm condition.
In order to strengthen the protection to measuring room 4, the door body employing two storied gate result to measuring room 4 comprises outer door 44 and inner layer door 45, and be provided with magnetic card cipher lock on inner layer door 45, can enter just therefore only have the box-type substation administrative staff of mandate; Simultaneously, table look-up for convenience, on inner layer door, also be provided with window.
Low-pressure chamber 3 comprises: low-tension supply incoming line cabinet 31, low pressure outlet cabinet 32 and low-voltage capacitance cabinet 33.Low-voltage bus bar 22 inserts the low-tension supply incoming line cabinet 31 of low-pressure chamber 3 through the circuit breaker 43 of measuring room 4, when the circuit breaker in the measuring room 4 43 disconnects, also cut off the power supply of low-pressure chamber 3 under stealing controller 42 or box-type substation administrative staff's control.
Measure the situation of electric current shunting though adopt metering current mulual inductor in the present embodiment as electric current shunt measurement device 41, but the measurement mechanism that can also adopt other is measured the situation of electric current shunting, concrete measurement mechanism and structure thereof are existing in the prior art to be introduced in detail, is not described in detail at this.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
The box-type substation of the utility model embodiment is being provided with measuring room, can monitor the operation information of box-type substation in real time, stealing controller when in the box-type substation electricity filching behavior taking place in the measuring room can send warning message to box-type substation operational management personnel immediately, so that in time prevent electricity filching behavior, effectively reduce the electricity charge that cause because of stealing and run off; Transformer room's pilot switch is set in the transformer room and in the measuring room, the unlatching of transformer room and measuring room door is monitored, prevent that other people grade beyond the box-type substation operational management personnel from entering transformer room and measuring room; In addition, adopt the low-voltage bus bar that sealing is handled through all-metal, and the fastening low-voltage bus bar of use anti-theft screw, low-voltage bus bar has been played the better protection effect, and installation and measuring switch between low-voltage bus bar and metal enclosed device, detect the opening of low-voltage bus bar in real time, help further to prevent the generation of electricity filching behavior; The door body of measuring room adopts the two storied gate structure, and inner layer door is provided with magnetic card cipher lock, helps preventing that unrelated person from entering measuring room, and the window on the inner layer door body is convenient to check the electric energy meter data.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.