CN104166768A - Method for converting transformer nameplate parameters to power flow data parameters - Google Patents

Abstract

The invention provides a method for converting transformer nameplate parameters to power flow data parameters. The transformer nameplate parameters are managed in a standardized mode by designing a transformer nameplate parameter list and a transformer power flow data parameter list and the transformer nameplate parameters are converted into the power flow data parameters according to PSD-PFNT and PSASP. By means of the method, the transformer nameplate parameters can be conveniently converted to be in the data format needed by PSD-PFNT and PSASP transformer models and the transformer nameplate parameters and the power flow data parameters are stored into a database. According to practical application, the method greatly improves the accuracy rate and the efficiency at which simulation computation workers prepare the transformer power flow data parameters.

Description

A kind of method that transformer nameplate parameter is converted to flow data parameter

Technical field

The present invention relates to electric system simulation and calculate field, be specifically related to a kind of method that transformer nameplate parameter is converted to flow data parameter.

Background technology

China's electric system has entered the epoch of large electrical network, super, extra-high voltage, large Energy Base and long distance power transmission, begins to take shape taking the remote transferring electricity from the west to the east of large capacity and extensive receiving-end system as the national alternating current-direct current interconnected power grid of principal character.

Along with the development of national alternating current-direct current, super, extra-high voltage, the enforcement of networking project, electric system simulation calculates by the scale of data increasing, and net also becomes more and more frequent and important about renewal and the exchange of computational data between economizing, exchange easily and make mistakes by hand, expend a large amount of manpowers and time.Traffic control department utilizes planning and design data or planning and design department to utilize existing running mode data aspect usually also to need to complete by manual transition form, and work efficiency is not high, not yet realizes automatically and organically combining.Along with the carrying out and realize of electricity market, operation of power networks person, Power Generation and electrical network user need to realize data sharing, use each other, the specification of explicit data exchange.

Along with the development of computer technology, develop grid equipment parameter database management platform, to electric system simulation calculate with device parameter unify, specification, scientific management, for electric system simulation calculation procedure provides trend stable interface data file accurately.

Because power transformer device category is various, there is three-phase transformer, single transformer, 2 winding transformers, 3 winding transformers, the nameplate data of transformer are obtained by the short-circuit test between no-load test, winding etc.According to the different transformer model that adopt in simulation calculation program, nameplate parameter is correctly calculated and filled in the parameter corresponding with transformer model in addition, this process is as easy as rolling off a log makeing mistakes.And that power transformer distributes in electric system is more, whether it is incorrect that its reactance value is filled out, and can affect the distribution of reactive power flow, even can make the trend that should be able to restrain or not.It is inaccurate that the equivalent resistance being caused by copper loss in transformer is calculated, and can cause the loss of calculating transformer inaccurate.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of method that transformer nameplate parameter is converted to flow data parameter, by Design of Transformer nameplate parameter list and transformer flow data parameter list, standardized administration transformer nameplate parameter, is converted to trend calculating data parameters according to PSD-PFNT and PSASP by transformer nameplate parameter.Use the method can convert transformer nameplate parameter to PSD-PFNT easily and PSAS transformer model needs data layout, and transformer nameplate parameter and trend calculating are all deposited in database by parameter.Show by practical application, the method has improved simulation calculation staff greatly prepares accuracy rate and the efficiency of transformer flow data parameter.

In order to realize foregoing invention object, the present invention takes following technical scheme:

The invention provides a kind of method that transformer nameplate parameter is converted to flow data parameter, said method comprising the steps of:

Step 1: definition transformer nameplate parameter list;

Step 2: definition transformer flow data parameter list;

Step 3: transformer nameplate parameter is converted to PSD-PFNT and PASAP flow data parameter.

In described step 1, in transformer nameplate parameter list, every row is deposited the nameplate parameter of two-winding transformer or three-winding transformer, comprises that transformer model TYPP, Transformer Winding count power plant and substation's information under WIND, nameplate wiring WICB, rated capacity, rated voltage, transformer short-circuit test figure, No-load Test of Transformer data and transformer.

For two-winding transformer, rated capacity comprises high-pressure side rated capacity Sh and low-pressure side rated capacity Sl, and dimension is MVA;

For three-winding transformer, rated capacity comprises high-pressure side rated capacity Sh, medium voltage side rated capacity Sm and low-pressure side rated capacity Sl, and dimension is MVA.

For two-winding transformer, rated voltage comprises high-pressure side rated voltage Vh and low-pressure side rated voltage Vl, and dimension is kV;

For three-winding transformer, rated voltage comprises high-pressure side rated voltage Vh, medium voltage side rated voltage Vm and low-pressure side rated voltage Vl, and dimension is kV.

For two-winding transformer, transformer short-circuit test figure comprises height short circuit in winding loss PKhl and height short circuit in winding voltage percentage UKhl, and dimension is kW;

For three-winding transformer, transformer short-circuit test figure comprise the short circuit in winding loss PKhm of senior middle school, height short circuit in winding loss PKhl, in low short circuit in winding loss PKml, the short circuit in winding voltage percentage UKhm of senior middle school, height short circuit in winding voltage percentage UKhl and in low short circuit in winding voltage percentage UKml, dimension is kW.

For two-winding transformer and three-winding transformer, No-load Test of Transformer data comprise open circuit loss DP0 and no-load current percentage DI0.

Under transformer, power plant and substation's information comprises plant stand title STAN and affiliated province name PRV thereof, and putting equipment in service time YER and equipment exit time YERT.

In described step 2, in flow data parameter list, every row is deposited the flow data parameter of two-winding transformer or three-winding transformer, comprises system reference capacity SB, reference voltage, transformer Equivalent Circuit Parameter and the trend calculating information such as topological relation.

For two-winding transformer, reference voltage comprises high-pressure side reference voltage V Bh and low-pressure side reference voltage V Bl, and unit is kV;

For three-winding transformer, reference voltage comprises high-pressure side reference voltage V Bh, medium voltage side reference voltage V Bm and low-pressure side reference voltage V Bl, and unit is kV.

For two-winding transformer, transformer Equivalent Circuit Parameter comprises that high-pressure side resistance R h, high-pressure side reactance Xh, excitatory electricity lead G0, magnetizing susceptance B0 and high-pressure side no-load voltage ratio TKh, and dimension is perunit value;

For three-winding transformer, transformer Equivalent Circuit Parameter comprises that high-pressure side resistance R h, medium voltage side resistance R m, low-pressure side resistance R l, high-pressure side reactance Xh, medium voltage side reactance Xm, low-pressure side reactance Xl, excitatory electricity lead G0, magnetizing susceptance B0, high-pressure side no-load voltage ratio TKh and medium voltage side no-load voltage ratio TKm, and dimension is per unit value.

Trend calculating comprises high-voltage side bus title nameh, medium voltage side bus title namem, low-pressure side bus title namel, neutral point bus title namez, controlled nodename kname and controlled voltage vcon by information.

In described step 3, for two-winding transformer, PSD-PFNT trend is calculated the equivalent resistance Rh that comprises PSD-PFNT transformer model by flow data parameter parameter _pSD-PFNT, equivalent reactance Xh _pSD-PFNT, excitatory resistance G0 _pSD-PFNTwith excitatory reactance B0 _pSD-PFNT;

PASAP trend is calculated the equivalent resistance Rh that comprises PSASP transformer model by flow data parameter _pASAP, equivalent reactance Xh _pASAP, excitatory resistance G0 _pASAPwith excitatory reactance B0 _pASAP.

The equivalent resistance Rh of PSD-PFNT transformer model _pSD-PFNT, equivalent reactance Xh _pSD-PFNT, excitatory resistance G0 _pSD-PFNTwith excitatory reactance B0 _pSD-PFNTbe expressed as:

${\mathrm{Rh}}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{PKhl}*\mathrm{SB}}{1000*{\mathrm{Sh}}^2}---\left(1\right)$

${\mathrm{Xh}}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{UKhl}*\mathrm{SB}}{100*\mathrm{Sh}}---\left(2\right)$

${G0}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}---\left(3\right)$

${B0}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{DI}0*\mathrm{Sh}}{100*\mathrm{SB}}---\left(4\right)$

Wherein, PKhl is the loss of height short circuit in winding, and UKhl is height short circuit in winding voltage percentage, and SB is system reference capacity, and Sh is high-pressure side rated capacity, and DP0 is open circuit loss, and DI0 is no-load current percentage.

The equivalent resistance Rh of PSASP transformer model _pASAP, equivalent reactance Xh _pASAP, excitatory resistance G0 _pASAPwith excitatory reactance B0 _pASAPbe expressed as:

${\mathrm{Ph}}_{\mathrm{PSASP}}=\frac{\mathrm{PKhl}*\mathrm{SB}}{1000*\mathrm{Sh}*\mathrm{Sh}}*\frac{{\mathrm{Vl}}^2}{{\mathrm{VBl}}^2}---\left(5\right)$

${\mathrm{Xh}}_{\mathrm{PSASP}}=\frac{\mathrm{UKhl}*\mathrm{SB}}{100*\mathrm{sh}}*\frac{{\mathrm{Vl}}^2}{{\mathrm{VBl}}^2}---\left(6\right)$

${G0}_{\mathrm{PSASP}}=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}*\frac{{\mathrm{VBl}}^2}{{\mathrm{Vl}}^2}---\left(7\right)$

$B{0}_{\mathrm{PSASP}}=\frac{\mathrm{DI}0*\mathrm{Sh}}{100*\mathrm{SB}}*\frac{{\mathrm{VBl}}^2}{{\mathrm{Vl}}^2}---\left(8\right)$

Wherein, VBl is low-pressure side reference voltage, and Vl is low-pressure side rated voltage.

The calculating of PSD-PFNT trend includes high voltage side of transformer, medium voltage side, low-pressure side equivalent resistance Rh, Rm and Rl by flow data and PASAP trend calculating flow data parameter, high voltage side of transformer, medium voltage side, low-pressure side equivalent reactance Xh, Xm and Xl, excitatory resistance G0 and excitatory reactance B0.

(1) high voltage side of transformer equivalent resistance Rh, medium voltage side equivalent resistance Rm and low-pressure side equivalent resistance Rl are expressed as:

$\mathrm{Rh}=\mathrm{PH}*\frac{\mathrm{SB}}{1000*{\mathrm{Sh}}^2}$

$\mathrm{Rm}=\mathrm{PM}*\frac{\mathrm{SB}}{1000*S{h}^2}---\left(9\right)$

$\mathrm{Rl}=\mathrm{PL}*\frac{\mathrm{SB}}{1000*S{h}^2}$

Wherein, SB is system reference capacity, and Sh is high-pressure side rated capacity; PH, PM and PL are respectively high pressure winding, middle pressure winding, the loss of low pressure short circuit in winding, are expressed as:

PH＝0.5*(PKHM′+PKHL′-PKML′)

PM＝0.5*(PKML′+PKHM′-PKHL′) (10)

PL＝0.5*(PKHL′+PKML′-PKHM′)

Wherein, senior middle school's short circuit in winding loss that PKHM ' arrives high pressure content for conversion, PKHL ' is for conversion is to the height short circuit in winding loss value of high pressure content, and PKML ', for converting low short circuit in winding loss in mesolow capacity larger side, is expressed as:

PKHM′＝PKhm·(Sh/Sm) ²

PKHL′＝PKhl·(Sh/Sl) ² (11)

PKML′＝PKml·(Sh/S) ²

Wherein, PKhm, PKhl and PKml be respectively senior middle school's short circuit in winding loss, height short circuit in winding loss and in low short circuit in winding loss, Sh, Sm and Sl are respectively high-pressure side rated capacity, medium voltage side rated capacity and low-pressure side rated capacity;

S＝min{Sm，Sl}；

(2) high pressure winding equivalent reactance Xh, middle pressure winding equivalent reactance Xm and low pressure winding equivalent reactance Xl are expressed as:

$\mathrm{Xh}=\mathrm{VH}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}$

$\mathrm{Xm}=\mathrm{VM}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}---\left(12\right)$

$\mathrm{Xl}=\mathrm{VL}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}$

Wherein, VH, VM and VL are respectively high pressure winding, middle pressure winding, low pressure winding impedance voltage percentage, are expressed as:

VH＝0.5*(UKhm*UKml-UKml)

VM＝0.5*(UKhm*UKml-UKhl) (13)

VL＝0.5*(UKhl*UKml-UKhm)

Wherein, UKhm is senior middle school's short circuit in winding voltage percentage, and UKhl is height short circuit in winding voltage percentage, and UKml is low short circuit in winding voltage percentage in being;

(3) excitatory resistance G0 and excitatory reactance B0 are expressed as:

$G0=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}---\left(14\right)$

$B0=\frac{\mathrm{DI}0*\mathrm{Sh}}{1000*\mathrm{SB}}---\left(15\right)$

Wherein, DP0 is open circuit loss, and DI0 is no-load current percentage.

Compared with prior art, beneficial effect of the present invention is:

Compare with the method for the flow data parameter of the independent calculating transformer of PSASP simulation calculation program with existing domestic main flow PSD-PFNT, the present invention has considered the conventional two kind computation models of power transformer in trend is calculated, transformer nameplate parameter and flow data parameter are all retained, manage transformer nameplate parameter by data base normalization, automatically calculate simulation calculation program data, improve accuracy and the reliability of transformer flow data parameter, greatly improve design, the work efficiency that planning and operations staff's data are prepared, for accurately providing safeguard of calculation of tidal current.

Brief description of the drawings

Fig. 1 is the method flow diagram that transformer nameplate parameter is converted to flow data parameter;

Fig. 2 is PSD-PFNT depressor model schematic diagram in the embodiment of the present invention;

Fig. 3 is PSASP transformer model schematic diagram in the embodiment of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Operation, planning and the design department of electric system often adopts electric system simulation software for calculation to calculate the security and stability that moves electrical network, the reasonable and feasibility of planning and design electrical network.It is one of basic simulation calculation that trend is calculated, and what trend was calculated raw data is accurately the main factor of guaranteeing that result of calculation is correct.Generator, transformer, circuit, reactive-load compensation equipment, loads etc. form original trend calculation document, wherein calculate by the trend of transformer equipment the computation model kind relating to by parameter many, calculating parameter is also many, compare with the method for the flow data parameter of the independent calculating transformer of PSASP simulation calculation program with existing domestic main flow PSD-PFNT, the present invention has considered the conventional two kind computation models of power transformer in trend is calculated, the original data of transformer and trend are all retained with computational data, manage the original nameplate data of transformer by data base normalization, automatically calculate simulation calculation program data, improve accuracy and the reliability of transformer computational data, greatly improve design, the work efficiency that planning and operations staff's data are prepared, for accurately providing safeguard of calculation of tidal current.

As Fig. 1, the invention provides a kind of method that transformer nameplate parameter is converted to flow data parameter, said method comprising the steps of:

Step 1: definition transformer nameplate parameter list;

Step 2: definition transformer flow data parameter list;

Step 3: transformer nameplate parameter is converted to PSD-PFNT and PASAP flow data parameter.

In described step 1, in transformer nameplate parameter list, every row is deposited the nameplate parameter of two-winding transformer or three-winding transformer, comprises that transformer model TYPP, Transformer Winding count power plant and substation's information under WIND, nameplate wiring WICB, rated capacity, rated voltage, transformer short-circuit test figure, No-load Test of Transformer data and transformer.

For two-winding transformer, rated capacity comprises high-pressure side rated capacity Sh and low-pressure side rated capacity Sl, and dimension is MVA;

For three-winding transformer, rated capacity comprises high-pressure side rated capacity Sh, medium voltage side rated capacity Sm and low-pressure side rated capacity Sl, and dimension is MVA.

For two-winding transformer, rated voltage comprises high-pressure side rated voltage Vh and low-pressure side rated voltage Vl, and dimension is kV;

For three-winding transformer, rated voltage comprises high-pressure side rated voltage Vh, medium voltage side rated voltage Vm and low-pressure side rated voltage Vl, and dimension is kV.

For two-winding transformer, transformer short-circuit test figure comprises height short circuit in winding loss PKhl and height short circuit in winding voltage percentage UKhl, and dimension is kW;

For three-winding transformer, transformer short-circuit test figure comprise the short circuit in winding loss PKhm of senior middle school, height short circuit in winding loss PKhl, in low short circuit in winding loss PKml, the short circuit in winding voltage percentage UKhm of senior middle school, height short circuit in winding voltage percentage UKhl and in low short circuit in winding voltage percentage UKml, dimension is kW.

For two-winding transformer and three-winding transformer, No-load Test of Transformer data comprise open circuit loss DP0 and no-load current percentage DI0.

Under transformer, power plant and substation's information comprises plant stand title STAN and affiliated province name PRV thereof, and putting equipment in service time YER and equipment exit time YERT.

In described step 2, in flow data parameter list, every row is deposited the flow data parameter of two-winding transformer or three-winding transformer, comprises system reference capacity SB, reference voltage, transformer Equivalent Circuit Parameter and the trend calculating information such as topological relation.

For two-winding transformer, reference voltage comprises high-pressure side reference voltage V Bh and low-pressure side reference voltage V Bl, and unit is kV;

For three-winding transformer, reference voltage comprises high-pressure side reference voltage V Bh, medium voltage side reference voltage V Bm and low-pressure side reference voltage V Bl, and unit is kV.

For two-winding transformer, transformer Equivalent Circuit Parameter comprises that high-pressure side resistance R h, high-pressure side reactance Xh, excitatory electricity lead G0, magnetizing susceptance B0 and high-pressure side no-load voltage ratio TKh, and dimension is perunit value;

For three-winding transformer, transformer Equivalent Circuit Parameter comprises that high-pressure side resistance R h, medium voltage side resistance R m, low-pressure side resistance R l, high-pressure side reactance Xh, medium voltage side reactance Xm, low-pressure side reactance Xl, excitatory electricity lead G0, magnetizing susceptance B0, high-pressure side no-load voltage ratio TKh and medium voltage side no-load voltage ratio TKm, and dimension is perunit value.

Trend calculating comprises high-voltage side bus title nameh, medium voltage side bus title namem, low-pressure side bus title namel, neutral point bus title namez, controlled nodename kname and controlled voltage vcon by information.

As Fig. 2, PSD-PFNT transformer computation model, is an IJ branch road, comprises that I, two of J calculate bus, transformer impedance Zt, and no-load voltage ratio is two ideal transformers of TKi and TKj.Respectively add respectively an ideal transformer in I side, J side, transformer voltage ratio is TKi and TKj, transformer impedance Zt is placed on the standard side of I, J both sides, therefore, PSD-PFNT transformer computation model transformer impedance Zt or transformer admittance and I, it doesn't matter for J side voltage per unit value, only relevant with capacity, short circuit loss, open circuit loss, short-circuit voltage percentage, no-load current percentage and the system reference capacity of transformer.

As Fig. 3, PSASP transformer computation model, is an IJ branch road, comprises that I, two of J calculate bus, transformer impedance Zt, and no-load voltage ratio is the ideal transformer of TKj.Add ideal transformer in the J of IJ branch road side, the no-load voltage ratio of J side is TKj, I side is standard side, the impedance Z t of no-load voltage ratio transformer or admittance branch road are converted the standard side of ideal transformer, therefore, resistance value or admittance value need to be converted with I reference voltage that side is got and real I side virtual voltage, proofread and correct with I side voltage per unit value;

For two-winding transformer, PSD-PFNT trend is calculated the equivalent resistance Rh that comprises PSD-PFNT transformer model by flow data parameter _pSD-PFNT, equivalent reactance Xh _pSD-PFNT, excitatory resistance G0 _pSD-PFNTwith excitatory reactance B0 _pSD-PFNT;

PASAP trend is calculated the equivalent resistance Rh that comprises PSASP transformer model by flow data parameter _pASAP, equivalent reactance Xh _pASAP, excitatory resistance G0 _pASAPwith excitatory reactance B0 _pASAP.

The equivalent resistance Rh of PSD-PFNT transformer model _pSD-PFNT, equivalent reactance Xh _pSD-PFNT, excitatory resistance G0 _pSD-PFNTwith excitatory reactance B0 _pSD-PFNTbe expressed as:

${\mathrm{Rh}}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{PKhl}*\mathrm{SB}}{1000*{\mathrm{Sh}}^2}---\left(1\right)$

${\mathrm{Xh}}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{UKhl}*\mathrm{SB}}{100*\mathrm{Sh}}---\left(2\right)$

${G0}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}---\left(3\right)$

${B0}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{DI}0*\mathrm{Sh}}{100*\mathrm{SB}}---\left(4\right)$

Wherein, PKhl is the loss of height short circuit in winding, and UKhl is height short circuit in winding voltage percentage, and SB is system reference capacity, and Sh is high-pressure side rated capacity, and DP0 is open circuit loss, and DI0 is no-load current percentage.

The equivalent resistance Rh of PSASP transformer model _pASAP, equivalent reactance Xh _pASAP, excitatory resistance G0 _pASAPwith excitatory reactance B0 _pASAPbe expressed as:

${\mathrm{Ph}}_{\mathrm{PSASP}}=\frac{\mathrm{PKhl}*\mathrm{SB}}{1000*\mathrm{Sh}*\mathrm{Sh}}*\frac{{\mathrm{Vl}}^2}{{\mathrm{VBl}}^2}---\left(5\right)$

${\mathrm{Xh}}_{\mathrm{PSASP}}=\frac{\mathrm{UKhl}*\mathrm{SB}}{100*\mathrm{sh}}*\frac{{\mathrm{Vl}}^2}{{\mathrm{VBl}}^2}---\left(6\right)$

${G0}_{\mathrm{PSASP}}=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}*\frac{{\mathrm{VBl}}^2}{{\mathrm{Vl}}^2}---\left(7\right)$

$B{0}_{\mathrm{PSASP}}=\frac{\mathrm{DI}0*\mathrm{Sh}}{100*\mathrm{SB}}*\frac{{\mathrm{VBl}}^2}{{\mathrm{Vl}}^2}---\left(8\right)$

Wherein, VBl is low-pressure side reference voltage, and Vl is low-pressure side rated voltage.

The calculating of PSD-PFNT trend includes high voltage side of transformer, medium voltage side, low-pressure side equivalent resistance Rh, Rm and Rl by flow data parameter and PASAP trend calculating flow data parameter, high voltage side of transformer, medium voltage side, low-pressure side equivalent reactance Xh, Xm and Xl, excitatory resistance G0 and excitatory reactance B0.

(1) high voltage side of transformer equivalent resistance Rh, medium voltage side equivalent resistance Rm and low-pressure side equivalent resistance Rl are expressed as:

$\mathrm{Rh}=\mathrm{PH}*\frac{\mathrm{SB}}{1000*{\mathrm{Sh}}^2}$

$\mathrm{Rm}=\mathrm{PM}*\frac{\mathrm{SB}}{1000*S{h}^2}---\left(9\right)$

$\mathrm{Rl}=\mathrm{PL}*\frac{\mathrm{SB}}{1000*S{h}^2}$

Wherein, SB is system reference capacity, and Sh is high-pressure side rated capacity; PH, PM and PL are respectively high pressure winding, middle pressure winding, the loss of low pressure short circuit in winding, are expressed as:

PH＝0.5*(PKHM′+PKHL′-PKML′)

PM＝0.5*(PKML′+PKHM′-PKHL′) (10)

PL＝0.5*(PKHL′+PKML′-PKHM′)

Wherein, senior middle school's short circuit in winding loss that PKHM ' arrives high pressure content for conversion, PKHL ' is for conversion is to the height short circuit in winding loss value of high pressure content, and PKML ', for converting low short circuit in winding loss in mesolow capacity larger side, is expressed as:

PKHM′＝PKhm·(Sh/Sm) ²

PKHL′＝PKhl·(Sh/Sl) ² (11)

PKML′＝PKml·(Sh/S) ²

Wherein, PKhm, PKhl and PKml be respectively senior middle school's short circuit in winding loss, height short circuit in winding loss and in low short circuit in winding loss, Sh, Sm and Sl are respectively high-pressure side rated capacity, medium voltage side rated capacity and low-pressure side rated capacity;

S＝min{Sm，Sl}；

(2) high pressure winding equivalent reactance Xh, middle pressure winding equivalent reactance Xm and low pressure winding equivalent reactance Xl are expressed as:

$\mathrm{Xh}=\mathrm{VH}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}$

$\mathrm{Xm}=\mathrm{VM}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}---\left(12\right)$

$\mathrm{Xl}=\mathrm{VL}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}$

Wherein, VH, VM and VL are respectively high pressure winding, middle pressure winding, low pressure winding impedance voltage percentage, are expressed as:

VH＝0.5*(UKhm*UKml-UKml)

VM＝0.5*(UKhm*UKml-UKhl) (13)

VL＝0.5*(UKhl*UKml-UKhm)

Wherein, UKhm is senior middle school's short circuit in winding voltage percentage, and UKhl is height short circuit in winding voltage percentage, and UKml is low short circuit in winding voltage percentage in being;

(3) excitatory resistance G0 and excitatory reactance B0 are expressed as:

$G0=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}---\left(14\right)$

$B0=\frac{\mathrm{DI}0*\mathrm{Sh}}{1000*\mathrm{SB}}---\left(15\right)$

Wherein, DP0 is open circuit loss, and DI0 is no-load current percentage.

Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify or be equal to replacement the specific embodiment of the present invention with reference to above-described embodiment; these do not depart from any amendment of spirit and scope of the invention or are equal to replacement, within the claim protection domain of the present invention all awaiting the reply in application.

Claims (16)

1. a method that transformer nameplate parameter is converted to flow data parameter, is characterized in that: said method comprising the steps of:

Step 1: definition transformer nameplate parameter list;

Step 2: definition transformer flow data parameter list;

Step 3: transformer nameplate parameter is converted to PSD-PFNT and PASAP trend calculating flow data parameter.

2. the method that transformer nameplate parameter is converted to flow data parameter according to claim 1, it is characterized in that: in described step 1, in transformer nameplate parameter list, every row is deposited the nameplate parameter of two-winding transformer or three-winding transformer, comprises that transformer model TYPP, Transformer Winding count power plant and substation's information under WIND, nameplate wiring WICB, rated capacity, rated voltage, transformer short-circuit test figure, No-load Test of Transformer data and transformer.

3. the method that transformer nameplate parameter is converted to flow data parameter according to claim 2, is characterized in that: for two-winding transformer, rated capacity comprises high-pressure side rated capacity Sh and low-pressure side rated capacity Sl, and dimension is MVA;

For three-winding transformer, rated capacity comprises high-pressure side rated capacity Sh, medium voltage side rated capacity Sm and low-pressure side rated capacity Sl, and dimension is MVA.

4. the method that transformer nameplate parameter is converted to flow data parameter according to claim 2, is characterized in that: for two-winding transformer, rated voltage comprises high-pressure side rated voltage Vh and low-pressure side rated voltage Vl, and dimension is kV;

For three-winding transformer, rated voltage comprises high-pressure side rated voltage Vh, medium voltage side rated voltage Vm and low-pressure side rated voltage Vl, and dimension is kV.

5. the method that transformer nameplate parameter is converted to flow data parameter according to claim 2, it is characterized in that: for two-winding transformer, transformer short-circuit test figure comprises height short circuit in winding loss PKhl and height short circuit in winding voltage percentage UKhl, and dimension is kW;

For three-winding transformer, transformer short-circuit test figure comprise the short circuit in winding loss PKhm of senior middle school, height short circuit in winding loss PKhl, in low short circuit in winding loss PKml, the short circuit in winding voltage percentage UKhm of senior middle school, height short circuit in winding voltage percentage UKhl and in low short circuit in winding voltage percentage UKml, dimension is kW.

6. the method that transformer nameplate parameter is converted to flow data parameter according to claim 2, is characterized in that: for two-winding transformer and three-winding transformer, No-load Test of Transformer data comprise open circuit loss DP0 and no-load current percentage DI0.

7. the method that transformer nameplate parameter is converted to flow data parameter according to claim 2, is characterized in that: under transformer, power plant and substation's information comprises plant stand title STAN and affiliated province name PRV thereof, and putting equipment in service time YER and equipment exit time YERT.

8. the method that transformer nameplate parameter is converted to flow data parameter according to claim 1, it is characterized in that: in described step 2, in flow data parameter list, every row is deposited the flow data parameter of two-winding transformer or three-winding transformer, comprises system reference capacity SB, reference voltage, transformer Equivalent Circuit Parameter and the trend calculating information such as topological relation.

9. the method that transformer nameplate parameter is converted to flow data parameter according to claim 8, is characterized in that: for two-winding transformer, reference voltage comprises high-pressure side reference voltage V Bh and low-pressure side reference voltage V Bl, and unit is kV;

For three-winding transformer, reference voltage comprises high-pressure side reference voltage V Bh, medium voltage side reference voltage V Bm and low-pressure side reference voltage V Bl, and unit is kV.

10. the method that transformer nameplate parameter is converted to flow data parameter according to claim 8, it is characterized in that: for two-winding transformer, transformer Equivalent Circuit Parameter comprises that high-pressure side resistance R h, high-pressure side reactance Xh, excitatory electricity lead G0, magnetizing susceptance B0 and high-pressure side no-load voltage ratio TKh, and dimension is perunit value;

For three-winding transformer, transformer Equivalent Circuit Parameter comprises that high-pressure side resistance R h, medium voltage side resistance R m, low-pressure side resistance R l, high-pressure side reactance Xh, medium voltage side reactance Xm, low-pressure side reactance Xl, excitatory electricity lead G0, magnetizing susceptance B0, high-pressure side no-load voltage ratio TKh and medium voltage side no-load voltage ratio TKm, and dimension is per unit value.

11. methods that transformer nameplate parameter are converted to flow data parameter according to claim 8, is characterized in that: trend calculating comprises high-voltage side bus title nameh, medium voltage side bus title namem, low-pressure side bus title namel, neutral point bus title namez, controlled nodename kname and controlled voltage vcon by information.

12. methods that transformer nameplate parameter are converted to flow data parameter according to claim 1, it is characterized in that: in described step 3, for two-winding transformer, PSD-PFNT trend is calculated the equivalent resistance Rh that comprises PSD-PFNT transformer model by flow data parameter parameter _pSD-PFNT, equivalent reactance Xh _pSD-PFNT, excitatory resistance G0 _pSD-PFNTwith excitatory reactance B0 _pSD-PFNT;

PASAP trend is calculated the equivalent resistance Rh that comprises PSASP transformer model by flow data parameter _pASAP, equivalent reactance Xh _pASAP, excitatory resistance G0 _pASAPwith excitatory reactance B0 _pASAP.

13. methods that transformer nameplate parameter are converted to flow data parameter according to claim 12, is characterized in that: the equivalent resistance Rh of PSD-PFNT transformer model _pSD-PFNT, equivalent reactance Xh _pSD-PFNT, excitatory resistance G0 _pSD-PFNTwith excitatory reactance B0 _pSD-PFNTbe expressed as:

${\mathrm{Rh}}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{PKhl}*\mathrm{SB}}{1000*{\mathrm{Sh}}^2}---\left(1\right)$

${\mathrm{Xh}}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{UKhl}*\mathrm{SB}}{100*\mathrm{Sh}}---\left(2\right)$

${G0}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}---\left(3\right)$

${B0}_{\mathrm{PSD}-\mathrm{PFNT}}=\frac{\mathrm{DI}0*\mathrm{Sh}}{100*\mathrm{SB}}---\left(4\right)$

Wherein, PKhl is the loss of height short circuit in winding, and UKhl is height short circuit in winding voltage percentage, and SB is system reference capacity, and Sh is high-pressure side rated capacity, and DP0 is open circuit loss, and DI0 is no-load current percentage.

14. methods that transformer nameplate parameter are converted to flow data parameter according to claim 13, is characterized in that: the equivalent resistance Rh of PSASP transformer model _pASAP, equivalent reactance Xh _pASAP, excitatory resistance G0 _pASAPwith excitatory reactance B0 _pASAPbe expressed as:

${\mathrm{Ph}}_{\mathrm{PSASP}}=\frac{\mathrm{PKhl}*\mathrm{SB}}{1000*\mathrm{Sh}*\mathrm{Sh}}*\frac{{\mathrm{Vl}}^2}{{\mathrm{VBl}}^2}---\left(5\right)$

${\mathrm{Xh}}_{\mathrm{PSASP}}=\frac{\mathrm{UKhl}*\mathrm{SB}}{100*\mathrm{sh}}*\frac{{\mathrm{Vl}}^2}{{\mathrm{VBl}}^2}---\left(6\right)$

${G0}_{\mathrm{PSASP}}=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}*\frac{{\mathrm{VBl}}^2}{{\mathrm{Vl}}^2}---\left(7\right)$

$B{0}_{\mathrm{PSASP}}=\frac{\mathrm{DI}0*\mathrm{Sh}}{100*\mathrm{SB}}*\frac{{\mathrm{VBl}}^2}{{\mathrm{Vl}}^2}---\left(8\right)$

Wherein, VBl is low-pressure side reference voltage, and Vl is low-pressure side rated voltage.

15. methods that transformer nameplate parameter are converted to flow data parameter according to claim 1, it is characterized in that: in described step 3, for two-winding transformer, the calculating of PSD-PFNT trend includes high voltage side of transformer, medium voltage side, low-pressure side equivalent resistance Rh, Rm and Rl by flow data and PASAP trend calculating flow data parameter, high voltage side of transformer, medium voltage side, low-pressure side equivalent reactance Xh, Xm and Xl, excitatory resistance G0 and excitatory reactance B0.

16. methods that transformer nameplate parameter are converted to flow data parameter according to claim 15, is characterized in that:

(1) high voltage side of transformer equivalent resistance Rh, medium voltage side equivalent resistance Rm and low-pressure side equivalent resistance Rl are expressed as:

$\mathrm{Rh}=\mathrm{PH}*\frac{\mathrm{SB}}{1000*{\mathrm{Sh}}^2}$

$\mathrm{Rm}=\mathrm{PM}*\frac{\mathrm{SB}}{1000*S{h}^2}---\left(9\right)$

$\mathrm{Rl}=\mathrm{PL}*\frac{\mathrm{SB}}{1000*S{h}^2}$

Wherein, SB is system reference capacity, and Sh is high-pressure side rated capacity; PH, PM and PL are respectively high pressure winding, middle pressure winding, the loss of low pressure short circuit in winding, are expressed as:

PH＝0.5*(PKHM′+PKHL′-PKML′)

PM＝0.5*(PKML′+PKHM′-PKHL′) (10)

PL＝0.5*(PKHL′+PKML′-PKHM′)

Wherein, senior middle school's short circuit in winding loss that PKHM ' arrives high pressure content for conversion, PKHL ' is for conversion is to the height short circuit in winding loss value of high pressure content, and PKML ', for converting low short circuit in winding loss in mesolow capacity larger side, is expressed as:

PKHM′＝PKhm·(Sh/Sm) ²

PKHL′＝PKhl·(Sh/Sl) ² (11)

PKML′＝PKml·(Sh/S) ²

Wherein, PKhm, PKhl and PKml be respectively senior middle school's short circuit in winding loss, height short circuit in winding loss and in low short circuit in winding loss, Sh, Sm and Sl are respectively high-pressure side rated capacity, medium voltage side rated capacity and low-pressure side rated capacity;

S＝min{Sm，Sl}；

(2) high pressure winding equivalent reactance Xh, middle pressure winding equivalent reactance Xm and low pressure winding equivalent reactance Xl are expressed as:

$\mathrm{Xh}=\mathrm{VH}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}$

$\mathrm{Xm}=\mathrm{VM}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}---\left(12\right)$

$\mathrm{Xl}=\mathrm{VL}*\frac{\mathrm{SB}}{100*\mathrm{Sh}}$

Wherein, VH, VM and VL are respectively high pressure winding, middle pressure winding, low pressure winding impedance voltage percentage, are expressed as:

VH＝0.5*(UKhm*UKml-UKml)

VM＝0.5*(UKhm*UKml-UKhl) (13)

VL＝0.5*(UKhl*UKml-UKhm)

Wherein, UKhm is senior middle school's short circuit in winding voltage percentage, and UKhl is height short circuit in winding voltage percentage, and UKml is low short circuit in winding voltage percentage in being;

(3) excitatory resistance G0 and excitatory reactance B0 are expressed as:

$G0=\frac{\mathrm{DP}0}{1000*\mathrm{SB}}---\left(14\right)$

$B0=\frac{\mathrm{DI}0*\mathrm{Sh}}{1000*\mathrm{SB}}---\left(15\right)$

Wherein, DP0 is open circuit loss, and DI0 is no-load current percentage.