Documentation Home Page HYPERSIM Home Page
Pour la documentation en FRANÇAIS, utilisez l'outil de traduction de votre navigateur Chrome, Edge ou Safari. Voir un exemple.

HYGOV


Description

HYGOV is the hydro turbine-governor model implemented in line with references [1-3].

Mask and Parameters

HYGOV Parameters

Expanding the "Block diagram" displays the block diagram in the parameters window.



Name

Description

Unit

Variable = {Possible Values}

R

Permanent droop

pu

0 < R < 0.1

r

Temporary droop

pu

0 < r < 2.0

VELM

Gate velocity limit

pu/s

--

GMAX

Maximum gate opening limit

pu

0 < GMAX ≤ 1.0

GMIN

Minimum gate opening limit

pu

0 ≤ GMIN < 1.0

TR

Governor time constant

s

0.04 < TR < 30

TF

Filter time constant

s

0.04 < TF < 0.1

TG

Servo time constant

s

0.04 < TG < 1.0

TW

Water time constant

s

>0.04

At

Turbine gain

pu

--

Dturb

Turbine damping

pu

--

qNL

No-load flow

pu

--

Initial Values Tab

Name

Description

Unit

Variable = {Possible Values}

Pm0

Initial mechanical power output

pu

--

w0

Speed reference

pu

--


The speed reference can be set manually, by entering a numerical value. It can also be set automatically based on load flow calculations, by entering a referenced synchronous machine variable. Machine variables can be found in the machine netlist. For instance, if the name of the synchronous machine on which the governor/turbine is connected is “SM1”, then the speed reference should be inserted as “=SM1.wo” if a thermal machine or a hydraulic machine is used, and as "=SM1.Wm_Init" if a pu standard or pu fundamental machine is used.

The same goes for initial power output of the machine Pm0. Pm0 shall be set as =SM1.Peo/SM1.BaseMVA, if a thermal machine or a hydraulic machine is used, and as "=SM1.lfP/1e6/SM1.sBase" if a pu standard or a pu fundamental machine is used, where Peo and IfP are the initial power outputs of the machines, respectively.

The HYPERSIM simulation option “Set Initial Conditions” must be checked for the automatic initialization to work properly.

Inputs and Outputs and Additional Signals Available for Monitoring

Inputs

I/O name

Description

Unit

w

Machine actual speed

pu 

VAR

External control reference

pu 


Outputs

I/O name

Description

Unit

Gate_p

Gate position

pu

Pm

Mechanical power output

pu

References

[1] P. Kundur, Power System Stability and Control, New York:McGraw-Hill, 1994.

[2] PSS®E 34.2.0 Model Library. NY, USA: Siemens Industry, Inc., 2017.

[3] T. Tshibungu and J. Mahseredjian, Exciters and Governors: Governor-Turbine HYGOV. EMTP-EMTPWorks, 2016.

OPAL-RT TECHNOLOGIES, Inc. | 1751, rue Richardson, bureau 1060 | Montréal, Québec Canada H3K 1G6 | opal-rt.com | +1 514-935-2323
Follow OPAL-RT: LinkedIn | Facebook | YouTube | X/Twitter