CN207069591U - A kind of SVG coordinates compensation system - Google Patents

Abstract

It the utility model is related to a kind of SVG and coordinate compensation system, the system includes the first current transformer, the second current transformer, the first transformer, the second transformer, the first SVG, the 2nd SVG and controller；First transformer inputs electrically connect with input power, output end electrically connects with the first SVG, second transformer inputs electrically connect with input power, output end electrically connects with the 2nd SVG, and the controller electrically connects with first current transformer, second current transformer, the first SVG and the 2nd SVG respectively.During all the way generation power supply trouble of the technical scheme provided by the utility model in the two-way transformer-supplied circuit of transformer station of electricity consumption enterprise, the SVG on two lines road is set to coordinate to carry out reactive-load compensation, improve reactive-load compensation effect, avoid the wasting of resources, and increase economic efficiency.

Description

A kind of SVG coordinates compensation system

Technical field

Electric and electronic technical field is the utility model is related to, more particularly to a kind of SVG coordinates compensation system.

Background technology

SVG (Static Var Generator), i.e. static var compensator, are to refer exclusively to the electric semiconductor by from commutation Bridge-type current transformer carries out the equipment of reactive-load compensation.It is live in large industrial enterprise and petroleum gas equal energy source company, one Well matched to have 110KV transformer stations or 35KV transformer stations, these yards have high power load mostly, and are usually provided with two-way height Press input circuit, it is one standby as a master, when power supply trouble occurs for input circuit all the way wherein, ensure use electric loading thereon according to So can normal operation.A SVG is equipped with each route road, be each responsible for where circuit reactive-load compensation, when certain all the way When input circuit breaks down, the load on primary circuit is powered by another way input circuit, but SVG is generally only to residing Line transformer carries out reactive-load compensation.Now, because input circuit all the way is needed to two-way load supplying, and SVG compensation is only For line transformer all the way, such compensation effect and not up to predetermined effect, cause the wasting of resources.In addition, for length Defeated high-voltage line, on high-tension line, that is, reactive loss on the input circuit of electricity consumption enterprise substation transformer is also huge , particularly in underloading, reactive loss becomes apparent, and also results in the wasting of resources, and cause additional economic to bear to enterprise Load.

Utility model content

During for the power supply trouble of generation all the way in the two-way transformer-supplied circuit of transformer station of electricity consumption enterprise, make two SVG on circuit coordinates to carry out reactive-load compensation, improves reactive-load compensation effect, avoids the wasting of resources, and increases economic efficiency, this reality Coordinate compensation system with a kind of SVG of new proposition.

A kind of SVG provided by the utility model coordinate compensation system include the first current transformer, the second current transformer, First transformer, the second transformer, the first SVG, the 2nd SVG and controller；First transformer inputs and input power Electrical connection, output end electrically connect with the first SVG, and second transformer inputs electrically connect with input power, output end and institute State the 2nd SVG electrical connections, the controller respectively with first current transformer, second current transformer, described the One SVG and the 2nd SVG electrical connections；First current transformer be arranged at first transformer and input power it Between；Second current transformer is arranged between second transformer and input power.

The beneficial effects of the utility model are：First current transformer and the second current transformer are respectively arranged at electricity consumption enterprise The upstream of industry duplex feeding line transformer, the electric current of duplex feeding circuit is detected, if wherein supply line all the way, for example, Power supply trouble occurs for the first transformer inlet wire, then the first current transformer will can't detect electric current, meanwhile, the second transformer inlet wire Keep normal, the second current transformer can detect electric current, and the second transformer inlet wire will be by mother circuit to the first transformation All loads of carry are powered on device and the second transformer outlet.In the equal normal operation of two-way inlet wire, carry is first The first SVG in transformer outlet is responsible for carrying out reactive-load compensation to circuit where the first transformer, and carry goes out in the second transformer The 2nd SVG on line is responsible for carrying out reactive-load compensation to circuit where the second transformer.When power supply event occurs for the first transformer inlet wire During barrier, the load of carry will be powered by the second transformer inlet wire in the first transformer outlet, while the first SVG also will be with second SVG carries out reactive-load compensation to the second transformer inlet wire and the second transformer for providing power supply jointly, if the second transformer inlet wire Generation power supply trouble, the first SVG will also enter to the first transformer inlet wire and the first transformer for providing power supply jointly with the 2nd SVG Row reactive-load compensation.The compensation output module that circuit and transformer are respectively arranged at by SVG had both compensated charging in supply line It is idle, also compensate for the idle of supply line's transformer, improve compensation effect, reduce caused by undercompensation the wasting of resources and extra Financial burden.

On the basis of above-mentioned technical proposal, the utility model can also do following improvement.

Further, the system also includes the first bus connection switch, the second bus connection switch, the first displacement transducer and second Displacement sensor；First transformer inputs are electrically connected with second transformer inputs by the first bus connection switch, institute State the first transformer output end to electrically connect by the second bus connection switch with the second transformer output end, first displacement passes Sensor electrically connects with first bus connection switch, and the second displacement sensor electrically connects with second bus connection switch, described Controller electrically connects with first displacement transducer and the second displacement sensor respectively.

It is using the above-mentioned further beneficial effect of scheme：According to the mutual of the first current transformer and the second current transformer Inducing current detection case determines whether that supply line's failure occurs, according to the closure of the first bus connection switch and the second bus connection switch Situation judges circuit where power supply, then controls the first SVG and the 2nd SVG to coordinate to carry out reactive-load compensation to supply line, can More accurately to determine to need the circuit of reactive-load compensation, compensation efficiency is improved.

Further, the input voltage of first transformer and second transformer is 110KV or 35KV, output voltage For 10KV.

Further, the length of line is more than 10 kilometers between first transformer and input power, second transformation The length of line is more than 10 kilometers between device and input power.

It is using the above-mentioned further beneficial effect of scheme：110KV/35KV to 10KV transformer is that natural gas grows defeated pipe The main transformer of road station, and Long-distance Transmission Pipeline station transformer station is apart from the distance of higher level transformer station of electric company, The line length for exactly needing to set up is typically larger than 10 kilometers.Long-distance Transmission Pipeline station transformer station can be so directed to carry out more Effective reactive-load compensation.

Further, first current transformer and second current transformer are electricity metering Current Transformer.

It is using the above-mentioned further beneficial effect of scheme：The mutual inducing current that electricity metering Current Transformer detects will It is more accurate, improve the accuracy that two SVG coordinate reactive-load compensation.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is that a kind of SVG of the utility model embodiment coordinates the structured flowchart of compensation system.

Embodiment

Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality It is new, it is not intended to limit the scope of the utility model.

As shown in figure 1, a kind of SVG that the utility model embodiment provides, which coordinates compensation system, includes the first Current Mutual Inductance Device, the second current transformer, the first transformer, the second transformer, the first SVG, the 2nd SVG and controller；First transformation Device input electrically connects with input power, and output end electrically connects with the first SVG, second transformer inputs and input power Electrical connection, output end electrically connects with the 2nd SVG, the controller respectively with first current transformer, described second Current transformer, the first SVG and the 2nd SVG electrical connections.

First current transformer is arranged between first transformer and input power.

Second current transformer is arranged between second transformer and input power.

The transformer station of electricity consumption enterprise is usually provided with two transformers, two-way out-put supply is provided respectively, for transformer The electrical equipment of carry uses in outlet, and the power network that transformer accesses electric company by input circuit is used as input power, position Inlet wire between transformer station of electric company and transformer station of electricity consumption enterprise is generally voluntarily responsible for by electricity consumption enterprise.It should be noted It is that loop length is longer, charging thereon is idle bigger.Two current transformers are set respectively on two-way inlet wire, i.e., first Current transformer and the second current transformer, to detect the mutual inducing current of two-way input circuit.Two transformers are respectively by electricity The input of net high voltage power supply is converted to enterprise's low-tension supply output, to power to the load.It is idle to occur mainly with inlet wire and transformation Device.

If wherein supply line all the way, for example, power supply trouble occurs for the first transformer inlet wire, then the first current transformer Electric current will be can't detect, meanwhile, the second transformer inlet wire keeps normal, and the second current transformer can detect electric current, and second Transformer inlet wire will be powered by all loads of the mother circuit to carry on the first transformer and the second transformer outlet. In the equal normal operation of two-way inlet wire, first SVG of the carry in the first transformer outlet is responsible for online to the first transformer institute Road carries out reactive-load compensation, and twoth SVG of the carry in the second transformer outlet is responsible for carrying out nothing to circuit where the second transformer Work(compensates.When power supply trouble occurs for the first transformer inlet wire, the load of carry will be by the second transformation in the first transformer outlet Device inlet wire is powered, at the same the first SVG also by with the 2nd SVG jointly to providing the second transformer inlet wire and the second transformer of power supply Reactive-load compensation is carried out, if power supply trouble occurs for the second transformer inlet wire, the first SVG also will be with the 2nd SVG jointly to providing electricity The first transformer inlet wire in source and the first transformer carry out reactive-load compensation.The benefit of circuit and transformer is respectively arranged at by SVG Repay that the charging that output module had both been compensated in supply line is idle, also compensate for the idle of supply line's transformer, improve compensation effect, Reduce the wasting of resources and additional economic burden caused by undercompensation.

Preferably, the system also includes the first bus connection switch, the second bus connection switch, the first displacement transducer and second Displacement sensor；First transformer inputs are electrically connected with second transformer inputs by the first bus connection switch, institute State the first transformer output end to electrically connect by the second bus connection switch with the second transformer output end, first displacement passes Sensor electrically connects with first bus connection switch, and the second displacement sensor electrically connects with second bus connection switch, described Controller electrically connects with first displacement transducer and the second displacement sensor respectively.

If power supply trouble occurs for the inlet wire of the first transformer, the first bus connection switch or the second bus connection switch will close automatically Close, so as to pass through the load inlet wire power supply of the inlet wire of the second transformer to the first transformer institute on the line.Second transformer institute Situation when power supply trouble occurs for circuit is similar.Displacement transducer can detect whether bus connection switch closes, so as to judge mother Whether on line road turns on.

It should be noted that when inlet wire breaks down all the way for certain, the first bus connection switch and the second bus connection switch only have One of which closes.

Preferably, the input voltage of first transformer and second transformer is 110KV or 35KV, output voltage For 10KV.

Preferably, the length of line is more than 10 kilometers between first transformer and input power, second transformation The length of line is more than 10 kilometers between device and input power.

110KV/35KV to 10KV transformer is the main transformer of Long-distance Transmission Pipeline station, and natural gas length is defeated Pipeline station transformer station is apart from the distance of higher level transformer station of electric company, that is, the line length for needing to set up is typically larger than 10 Kilometer.Long-distance Transmission Pipeline station transformer station can be so directed to and carry out more effective reactive-load compensation.

Preferably, first current transformer and second current transformer are electricity metering Current Transformer. The mutual inducing current that electricity metering Current Transformer detects will be more accurate, improve two SVG and coordinate the accurate of reactive-load compensation Property.

Reader should be understood that in the description of this specification, reference term " one embodiment ", " some embodiments ", " show The description of example ", " specific example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure, Material or feature are contained at least one embodiment or example of the present utility model.In this manual, to above-mentioned term Schematic representation need not be directed to identical embodiment or example.Moreover, description specific features, structure, material or Feature can combine in an appropriate manner in any one or more embodiments or example.In addition, in not conflicting situation Under, those skilled in the art can be by the different embodiments or example and different embodiments or example described in this specification Feature be combined and combine.

Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in Within the scope of shield.

Claims (5)

1. a kind of SVG coordinates compensation system, it is characterised in that the system includes the first current transformer, the second Current Mutual Inductance Device, the first transformer, the second transformer, the first SVG, the 2nd SVG and controller；First transformer inputs and input electricity Source electrically connects, and output end electrically connects with the first SVG, and second transformer inputs electrically connect with input power, output end and 2nd SVG electrical connection, the controller respectively with first current transformer, second current transformer, described First SVG and the 2nd SVG electrical connections；First current transformer be arranged at first transformer and input power it Between；Second current transformer is arranged between second transformer and input power.

2. SVG according to claim 1 coordinates compensation system, it is characterised in that the system is also opened including the first mother Pass, the second bus connection switch, the first displacement transducer and second displacement sensor；First transformer inputs and described second Transformer inputs are electrically connected by the first bus connection switch, the first transformer output end and the second transformer output end Electrically connected by the second bus connection switch, first displacement transducer electrically connects with first bus connection switch, the second Displacement sensor electrically connects with second bus connection switch, the controller respectively with first displacement transducer and described second Displacement transducer electrically connects.

3. SVG according to claim 1 or 2 coordinates compensation system, it is characterised in that first transformer and described the The input voltage of two transformers is 110KV or 35KV, output voltage 10KV.

4. SVG according to claim 3 coordinates compensation system, it is characterised in that first transformer and input power Between line length be more than 10 kilometers, between second transformer and input power the length of line be more than 10 kilometers.

5. SVG according to claim 4 coordinates compensation system, it is characterised in that first current transformer and described Second current transformer is electricity metering Current Transformer.