def ramp(self, setpoint, maxStep=.5, disconnectWhenFinished=False):
tag = self.pSetpointTag
currentSetpoint = tagClient.readTags([tag])
diff = setpoint - currentSetpoint
if diff > maxStep:
currentSetpoint += maxStep
elif diff < -maxStep:
currentSetpoint -= maxStep
else:
currentSetpoint += diff
tagClient.writeTags([tag], [currentSetpoint])
if abs(diff) > .001:
#schedule a callback, allowing some time for actuation
sched = datetime.now() + timedelta(seconds=1.5)
Core.schedule(sched, self.ramp)
print("{me} is scheduling another ramp call: {cs}".format(
me=self.channelNumber, cs=currentSetpoint))
if disconnectWhenFinished == True and setpoint == 0:
print("ramp with disconnect completed, disconnecting {me}".
format(me=self.channelNumber))
self.disconnect()
else:
print("{me} is done ramping to {set}".format(me=self.name,
set=setpoint))
def cleanup():
tags = [
"BRANCH_1_BUS_1_FAULT", "BRANCH_1_BUS_2_FAULT", "BRANCH_2_BUS_1_FAULT",
"BRANCH_2_BUS_2_FAULT", "CROSSTIE_1_FAULT_1", "CROSSTIE_1_FAULT_2",
"CROSSTIE_2_FAULT_1", "CROSSTIE_2_FAULT_2", "MAIN_BUS_FAULT"
]
vals = [False] * 9
tagClient.writeTags(tags, vals)
def openRelay(self):
if self.locked:
print("TRIED TO OPEN LOCKED RELAY {nam}".format(nam=self.tagName))
return False
else:
if self.type == "infrastructure":
tagClient.writeTags([self.tagName],[True])
elif self.type == "load" or self.type == "source":
tagClient.writeTags([self.tagName],[False])
self.closed = False
return True
def connectWithSet(self, setpoint, voffset=0):
self.setpoint = setpoint
droopCoeff = self.setpoint / (self.noLoadVoltage - self.refVoltage)
#set up parameters for droop control
tags = [self.noLoadVoltageTag, self.droopCoeffTag, self.droopSelectTag]
values = [
self.noLoadVoltage + voffset,
self.setpoint / (self.noLoadVoltage - self.refVoltage), True
]
tagClient.writeTags(tags, values)
#close relay and connect source
self.connected = self.connect()
return self.connected
def connectSoft(self, mode, setpoint):
ch = self.channelNumber
if mode == "Vreg":
tagClient.writeTags([self.vSetpointTag], [0])
tags = [
self.battSelectTag, self.powerSelectTag, self.swingSelectTag
]
tagClient.writeTags([tags], [False, False, True])
tagClient.writeTags([self.relayTag], [True])
tagClient.writeTags([self.vSetpointTag], [setpoint])
elif mode == "Preg":
tagClient.writeTags([self.pSetpointTag], [0])
tags = [
self.battSelectTag, self.powerSelectTag, self.swingSelectTag
]
tagClient.writeTags([tags], [False, True, False])
tagClient.writeTags([self.relayTag], [True])
self.ramp(setpoint)
elif mode == "BattCharge":
tags = [self.pSetpointTag, self.battSelectTag]
tagClient.writeTags([tags], [0, True])
tag = "SOURCE_{d}_BatteryReqCharge".format(d=self.channelNumber)
tagClient.writeTags([tag], [True])
tagClient.writeTags([self.pSetpointTag], [setpoint])
else:
print("CHANNEL{ch} received a bad mode request: {mode}".format(
ch=self.channelNumber, mode=mode))
if tagClient.readTags([self.relayTag]):
self.connected = True
return True
else:
self.connected = False
return False
def addVoltageOffset(self, deltavoffset):
voffset = tagClient.readTags([self.noLoadVoltage])
voffset += deltavoffset
tagClient.writeTags([self.noLoadVoltage], [voffset])
def setVoltageOffset(self, voffset):
tagClient.writeTags([self.noLoadVoltageTag],
[self.noLoadVoltage + voffset])
def changeReserve(self, newPower, voffset):
self.setpoint = newPower
droopCoeff = self.setpoint / (self.noLoadVoltage - self.refVoltage)
tagClient.writeTags([self.droopCoeffTag, self.noLoadVoltageTag],
[droopCoeff, self.noLoadVoltage + voffset])
def changeSetpoint(self, newPower):
self.setpoint = newPower
droopCoeff = self.setpoint / (self.noLoadVoltage - self.refVoltage)
tagClient.writeTags([self.droopCoeffTag, self.noLoadVoltageTag],
[droopCoeff, self.noLoadVoltage])
def connect(self):
tagClient.writeTags([self.relayTag], [True])
#read tag to confirm write success
self.connected = tagClient.readTags([self.relayTag])
#self.connected = True
return self.connected
def disconnectSoft(self):
#change setpoint to zero
tagClient.writeTags([self.pSetpointTag], [0])
#callback and keep calling back until the current is almost zero
now = datetime.now()
Core.schedule(now + timedelta(seconds=1), self.waitForSettle)
def disconnect(self):
#disconnect power from the source
tagClient.writeTags([self.relayTag], [False])
#read tag to confirm write success
return tagClient.readTags([self.relayTag])
def timed_fault(tag, duration):
tagClient.writeTags([tag], [True], "SG")
time.sleep(duration)
tagClient.writeTags([tag], [False], "SG")
def persistent_fault(tag):
tagClient.writeTags([tag], [True], "SG")
def connectCustomer(self):
tagClient.writeTags([self.relayTag],[True])
def disconnectCustomer(self):
tagClient.writeTags([self.relayTag],[False])
