CN201408925Y - Compact prefabricated substation - Google Patents

Abstract

The utility model relates to complete electrical distribution equipment for the field of electric transformer and distribution. An intelligent controller of the complete electrical distribution equipment comprises a main control, a measuring module, a display module and a switch control module which are connected with each other, and function modules, such as a faults recording module, a groundingtest module and the like. All the function modules are directly controlled by a singlechip and relatively independently work. The measuring module processes data acquisition and treatment for the current and voltage input signals of a three-phase AC circuit through an alternating current sampling method, so as to realize to measure the current, the voltage, the active power, the reactive power, the power factors, the phase position, the frequency and the electric energy parameters and timely store the measurement data in the EEPROM for an upper computer to read to process post analysis process. The switch control module is provided with a relay, monitors the conditions of all the switches, receives a switch control order sent by the upper computer, and makes the corresponding switch workthrough controlling the relay. The equipment of the utility model has more convenient production, is simpler in the event of the failure, and has rapider maintenance.

Description

The compact preassembled transformer station

Technical field

The utility model relates to a kind of complete controller switching equipment that is used to become the distribution field, relates in particular to a kind of compact prepackage type box transforming station equipment.

Background technology

The structural shape of box-type substation mainly contains two kinds both at home and abroad at present: a kind of is that American case becomes, and a kind of is that European case becomes.And European case change version has two kinds: a kind of is the order font structure, the weak point of this structure is that high and low pressure turnover line all connects the high and low pressure cabinet from the transformer top, to making the high pressure inlet wire exposed, and the design temperature rise of transformer self coil is higher, so the bearing capacity of transformer is poor, burn out transformer easily, therefore exist the unsafe problem of electricity consumption.Secondly, because machine volume is bigger, difficult is installed.Another kind is Chinese character pin-shaped structure.Though this compact conformation, volume is little, and weak point is, because low-voltage cabinet is subjected to the space limited, can't the setting operation service clearance, and exist the maintenance difficulty, run into the problem that bad weather just can not keep in repair.In addition, existing box-type substation is managed case change carrying out long-range realization " four is distant " by the host computer of main website for realizing automation control, intelligent substation in the ring network power supply system under the control of main website, can be finished fault section and locate automatically, failure removal, functions such as load transfer.But above-mentioned control method is comparatively complicated, and cost is higher.

The utility model content

The purpose of this utility model provides a kind of intellectuality, Electrical Safety, reliable, compact conformation, minimizing floor space, economical with materials, maintenance is simple and direct, easy to operate, the compact preassembled transformer station that the relativity price ratio is high.

The technical solution of the utility model is: comprise being high pressure/transformer case, the low-voltage cabinet that day word structure is laid, high pressure/transformer case inside is provided with terminal type or looped network type ring main unit and transformer; Low-voltage cabinet inside is provided with intelligent controller, metering circuit, the reactive power compensation circuit that links to each other with host computer,

Intelligent controller mainly comprises interconnective main control module, measurement module, display module, switch control module, and functional module such as failure wave-recording, earthing test;

Single-chip microcomputer is arranged on the main control module, and each functional module is directly controlled by single-chip microcomputer, relatively independent work;

Measurement module carries out data acquisition with ac sampling method to electric current, the voltage input signal of three-phase AC line and handles, realization is to the measurement of electric current, voltage, active power, reactive power, power factor, phase place, frequency, electric energy parameter, and regularly measurement data is stored among the EPROM, keep supplying machine-readable the getting in position and carry out the post analysis processing;

Switch control module is provided with relay, and switch control module is monitored the state of each switch, receives the switch control command that host computer sends, and makes corresponding switch motion by the relay of controlling on it.

Described intelligent controller also comprises the wireless gsm module that links to each other with single-chip microcomputer.

Be designed to " day " word structure on the utility model general structure, hyperbaric chamber and transformer room are integrated, adopted advanced technology such as special-shaped copper alloy bus, make the volume of transformer station littler, performance is more stable.The structural design of intelligence control system is mainly reflected on the modularization idea, mainly comprises main control module, measurement module, display module, switch control module, functional modules such as failure wave-recording, earthing test.Make equipment of the present utility model more convenient during fabrication like this, more simple when breaking down, keep in repair more quick.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the vertical view of Fig. 1

The structured flowchart of Fig. 3 the utility model intelligent controller

Among the figure, the 1st, transformer, the 2nd, a part; the 3rd, high pressure inlet wire cable, the 4th, high pressure incoming line cabinet, the 5th, high-voltage terminal cabinet; the 6th, the high pressure fusible core of protection transformer in the high-voltage terminal cabinet; the 7th, the high lamination shoe of transformer high-voltage inlet wire side, the 8th, transformer low voltage outlet side voltage pile crown, the 9th, transformer low voltage outlet side zero phase pile crown; the 10th, low-voltage power distributing cabinet electric power incoming line side; the 11st, low-voltage power distributing cabinet zero phase side, the 12nd, intelligent controller, the 13rd, the high-voltage terminal cable of the totally-enclosed electric cable accessories of two ends band.

Embodiment

The utility model as shown in Figure 1, 2, 3, it links to each other with host computer, comprises being high pressure/transformer case, the low-voltage cabinet that day word structure is laid, high pressure/transformer case inside is provided with terminal type or looped network type ring main unit and transformer; Low-voltage cabinet inside is provided with intelligent controller, metering circuit, the reactive power compensation circuit that links to each other with host computer,

Intelligent controller mainly comprises interconnective main control module, measurement module, display module, switch control module, and functional module such as failure wave-recording, earthing test;

Single-chip microcomputer is arranged on the main control module, and each functional module is directly controlled by single-chip microcomputer, relatively independent work;

Measurement module carries out data acquisition with ac sampling method to electric current, the voltage input signal of three-phase AC line and handles, realization is to the measurement of electric current, voltage, active power, reactive power, power factor, phase place, frequency, electric energy parameter, and regularly measurement data is stored among the EEPROM, keep supplying machine-readable the getting in position and carry out the post analysis processing;

Switch control module is provided with relay, and switch control module is monitored the state of each switch, receives the switch control command that host computer sends, and makes corresponding switch motion by the relay of controlling on it.

Described intelligent controller also comprises the wireless gsm module that links to each other with single-chip microcomputer.

Single-chip microcomputer in the described intelligent controller adopts the high-speed dsp chip, also be provided with the high-speed a/d sampling A in the described intelligent controller, high-speed dsp chip, high-speed a/d sampling A are carried out high-speed sampling to 6 road input signals such as the electric current in the three-phase AC line, voltages, adopt digital filtering technique, utilize low frequency component to realize the isoparametric measurement of real-time voltage, electric current, power, power factor, frequency of high voltage chamber, by comparative analysis, arc fault is accurately judged the high fdrequency component of voltage, electric current.

When making the utility model, high pressure inlet wire cable 3 becomes bottom high pressure entrance hole by case and pierces in case becomes as shown in Figure 1, 2, receives on the high pressure incoming line cabinet 4, and middle to prop up part 2 fixing by tying up cable.The high-voltage terminal cable 13 of the totally-enclosed electric cable accessories of two ends band is drawn by high-voltage terminal cabinet 5, and the lower end of high pressure fusible core 6 of protection transformer causes on the high lamination shoe 7 of transformer high-voltage inlet wire side above the transformer 1 in the high-voltage terminal cabinet.Transformer high-voltage side cable is just all in place like this.Transformer 1 power supply wiring is drawn by transformer low voltage outlet side voltage pile crown 8, can the row of being also can do cable and cause on the low-voltage power distributing cabinet electric power incoming line side 10.Transformer 1 zero wiring are drawn by transformer low voltage outlet side zero phase pile crown 9, can the row of being also can do cable and cause on the low-voltage power distributing cabinet zero phase side 11.The step down side cable is just all in place like this.By low-voltage cabinet circuit is controlled then.

Characteristics of the present utility model are as follows:

(1) being arranged on high-voltage board and the transformer room of case in becoming combines with low-pressure chamber and is " day ", font was arranged, and high-voltage ring main unit is above step-up side.

(2) transformer station is inner processes by same set of hardware circuit and high-speed digital signal, right The low frequency component of electric current and voltage and the different disposal of high fdrequency component realize the event of parameter measurement and electric arc The fusion of barrier diagnosis, and integrated with breaker.

(3) adopt the cold rolling deformed steel assembly type of multiple bending frame structure, volume is little, intensity High; Special-shaped copper alloy bus need not secondary operations, and the installation method uniqueness is easy to connect, looses Hot side is big, and kelvin effect is good, saves copper material; Supporting bus structure and input/output port, peace Dress is convenient, connects reliably, has greatly improved the dynamic thermal stability of busbar short-circuit.

(4) because high-voltage ring main unit is placed on the transformer top, the high-tension cable wiring is safeguarded The space become big, install wiring, detection and fusible core change convenient, from the ring main unit end opening to transformation The device high-voltage pile is apart from minimizing, and stube cable is short, thereby economical with materials reduces box-type substation Volume, thereby reduce floor space, arranging of low-pressure chamber do not have much variations with former typical structure.

(5) because domestic alternative cable connectors is more, can make the ring main unit lower end Connected mode is identical with the connected mode of step-up side, thereby realizes that very touch-type connects, Increased the reliability of product. After this programme is implemented fully, will drive the leather of transformer industry Newly, thus the safe and stable operation of assurance transformer, the minimizing fault.

(6) the inner multi-data fusion technology that adopts of transformer station is tied mutually with the GMS SMS service Close, adopt GMS short message communication technology, be not subjected to communication distance and regional limits, data can be pacified Entirely be sent to any place, the preassembled transformer station of two technology of design fusion is comprehensively monitored system System.

Claims (2)

1, compact preassembled transformer station comprises being high pressure/transformer case, the low-voltage cabinet that day word structure is laid that high pressure/transformer case inside is provided with terminal type or looped network type ring main unit and transformer; Low-voltage cabinet inside is provided with intelligent controller, metering circuit, the reactive power compensation circuit that links to each other with host computer, it is characterized in that:

Intelligent controller mainly comprises interconnective main control module, measurement module, display module, switch control module, and functional module such as failure wave-recording, earthing test;

Single-chip microcomputer is arranged on the main control module, and each functional module is directly controlled by single-chip microcomputer, relatively independent work;

Measurement module carries out data acquisition with ac sampling method to electric current, the voltage input signal of three-phase AC line and handles, realization is to the measurement of electric current, voltage, active power, reactive power, power factor, phase place, frequency, electric energy parameter, and regularly measurement data is stored among the EEPROM, keep supplying machine-readable the getting in position and carry out the post analysis processing;

Switch control module is provided with relay, and switch control module is monitored the state of each switch, receives the switch control command that host computer sends, and makes corresponding switch motion by the relay of controlling on it.

2, compact preassembled transformer station according to claim 1 is characterized in that, described intelligent controller also comprises the wireless gsm module that links to each other with single-chip microcomputer.

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